MABEL_L2A Product Data Dictionary

Date Generated : 2014-10-27T17:14:45.000000Z
Product Type: MABEL_L2A, Format Version : SET_BY_PGE
Group: /
h5es_id(Attribute) 3
granule_type(Attribute)mabel_l2a
short_name(Attribute)mabel_l2a
level(Attribute)L2A
description(Attribute)Geolocated photons.
citation(Attribute)The data used in this study were produced by the ICESat-2 Science Project Office (PSO) at NASA/GSFC. The data archive site is the PSO.
comment(Attribute)Data granules consist of approximately 1 minute of HDF5 data and include corrected and geolocated MABEL elevation data (in meters) measuring the elevation of each detected photon within a range window about the DEM. All measured parameters are in science units.
contributor_name(Attribute)William B Cook (william.b.cook@nasa.gov), Thomas E Neumann (thomas.neumann@nasa.gov), Thorsten Markus (thorsten.markus@nasa.gov), David W Hancock III (david.w.hancock@nasa.gov), Jeffrey E Lee (jeffrey.e.lee@nasa.gov)
contributor_role(Attribute)Instrument Engineer, Investigator, Principle Investigator, Data Producer, Data Producer
Conventions(Attribute)CF-1.6
creator_email(Attribute)David.W.Hancock@nasa.gov
creator_name(Attribute)ICESat-2 Science Investigator-led Processing System (ISIPS)
date_created(Attribute)SET_BY_PGE
date_type(Attribute)J2000
dtu10_mss_citation(Attribute)Andersen O. B, Knudsen P (2009) The DNSC08 mean sea surface and mean dynamic topography. J. Geophys. Res., 114, C11, doi:10.1029/2008JC005179, 2009. Andersen, O. B., The DTU10 Gravity field and Mean sea surface (2010) Second international symposium of the gravity field of the Earth (IGFS2), Fairbanks, Alaska.
dtu10_mss_source(Attribute)DTU10MSS_1min.mss; downloaded June 22, 2012 from http://www.space.dtu.dk/English/Research/Scientific_data_and_models/downloaddata.aspx
egm2008_citation(Attribute)Pavlis, N.K., S.A. Holmes, S.C. Kenyon, and J.K. Factor, An Earth Gravitational Model to Degree 2160: EGM2008, presented at the 2008 General Assembly of the European Geosciences Union, Vienna, Austria, April 13-18, 2008.
egm2008_source(Attribute)Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz downloaded from http://earth-info.nga.mil/GandG/wgs84/gravitymod/egm2008/egm08_wgs84.html This file contains POINT values of geoid undulations with respect to WGS 84 in meters, on a 1x1 min global grid (equi-angular spacing in terms of WGS 84 geodetic coordinates), computed from EGM2008 to degree 2190 and using the conversion expansion to degree 2160. The file is global, and contains valid values for ALL 1x1 cells, regardless whether they are located over land or over ocean. The geoid undulations refer to the Tide-Free system, as far as the Permanent Tide is concerned.
egm96_citation(Attribute)The Development of the Joint NASA GSFC and NIMA Geopotential Model EGM96, F. G. Lemoine, S. C. Kenyon, J. K. Factor, R.G. Trimmer, N. K. Pavlis, D. S. Chinn, C. M. Cox, S. M. Klosko, S. B. Luthcke, M. H. Torrence, Y. M. Wang, R. G. Williamson, E. C. Pavlis, R. H. Rapp and T. R. Olson, NASA Goddard Space Flight Center, Greenbelt, Maryland, 20771 USA, July 1998.
egm96_source(Attribute)June 15, 2005; downloaded from http://earth-info.nga.mil/GandG/wgs84/gravitymod/egm96/egm96.html
featureType(Attribute)trajectory
flight_location(Attribute)SET_BY_PGE
flight_number(Attribute)SET_BY_PGE
geos5_fp_it_citation(Attribute)Lucchesi, R., 2013: File Specification for GEOS-5 FP-IT. GMAO Office Note No. 2 (Version 1.2), 60 pp, available from http://gmao.gsfc.nasa.gov/pubs/office_notes.
geos5_fp_it_source(Attribute)Global Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center
geospatial_lat_max(Attribute) 0.0000000000000000
geospatial_lat_min(Attribute) 0.0000000000000000
geospatial_lat_units(Attribute)degrees_north
geospatial_lon_max(Attribute) 0.0000000000000000
geospatial_lon_min(Attribute) 0.0000000000000000
geospatial_lon_units(Attribute)degrees_east
gimp_dem_citation(Attribute)Howat, I.M., A. Negrete, B.E. Smith, 2014, The Greenland Ice Mapping Project (GIMP) land classification and surface elevation datasets, The Cryosphere, 8, 1509-1518, doi:10.5194/tc-8-1509-2014
gimp_dem_source(Attribute)Version 2.1 (January 3, 2014), downloaded from link at http://bprc.osu.edu/GDG/gimpdem.php
gmted_dem_citation(Attribute)Danielson, J.J., and Gesch, D.B., 2011, Global multi-resolution terrain elevation data 2010 (GMTED2010): U.S. Geological Survey Open-File Report 2011 1073, 26 p. http://pubs.usgs.gov/of/2011/1073/
gmted_dem_source(Attribute)GMTED 7.5 arc-second GEOTIFFs; downloaded from http://http://topotools.cr.usgs.gov/GMTED_viewer.
hdfversion(Attribute)SET_BY_PGE
history(Attribute)SET_BY_PGE
identifier_file_uuid(Attribute)SET_BY_PGE
identifier_product_doi(Attribute)TBD
identifier_product_doi_authority(Attribute)http://dx.doi.org
identifier_product_format_version(Attribute)SET_BY_PGE
identifier_product_type(Attribute)MABEL_L2A
institution(Attribute)National Aeronautics and Space Administration (NASA)
instrument(Attribute)Multiple Altimeter Beam Experimental Lidar (MABEL)
keywords(Attribute)Earth Science > Spectral/Engineering > Infrared Wavelengths > Sensor Counts > Photons
keywords_vocabulary(Attribute)GCMD Science Keywords Version 6.0
license(Attribute)Data may not be reproduced or distributed without including the citation for this product included in this metadata. Data may not be distributed in an altered form without the written permission of the ICESat-2 Science Project Office at NASA/GSFC.
naming_authority(Attribute)http://dx.doi.org
platform(Attribute)SET_BY_PGE
processing_level(Attribute)L2A
project(Attribute)Multiple Altimeter Beam Experimental Lidar (MABEL)
publisher_email(Attribute)thomas.neumann@nasa.gov
publisher_name(Attribute)ICESat-2 Project Science Office (PSO) at NASA/GSFC.
publisher_url(Attribute)https://icesat-2.gsfc.nasa.gov/data/mabel/data/browse/index.html
references(Attribute)https://icesat-2.gsfc.nasa.gov/data/mabel/mabel_docs.php (Documentation set for this product at the ICESat-2 Website), https://icesat-2.gsfc.nasa.gov/data/mabel/data/browse/index.html (Browse data for MABEL at the ICESat-2 Website)
source(Attribute)Aircraft measurements
spatial_coverage_type(Attribute)Horizontal
standard_name_vocabulary(Attribute)CF-1.6
summary(Attribute)The PGE converts L1B ranges to geolocated photons. Each MABEL_L2A file was created from a corresponding MABEL_L1B file. The provenance metadata shows the history that created the granule.
time_coverage_duration(Attribute)SET_BY_PGE
time_coverage_end(Attribute)SET_BY_PGE
time_coverage_start(Attribute)SET_BY_PGE
time_type(Attribute)CCSDS UTC-A
title(Attribute)MABEL L2A Geolocated Photons (HDF5)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ds_alt_histogram_bins
(Contiguous Dataset)
INTEGER_4
(200)
Histogram dimension scale
(not_set)
counts
not_set
Altimetry histogram bin index. The histogram bins increment from the top of the range window to the bottom of the range window.
ds_atm_histogram_bins
(Contiguous Dataset)
INTEGER_4
(500)
Histogram dimension scale
(not_set)
counts
not_set
Atmosphere histogram bin index. The histogram bins increment from the top of the range window to the bottom of the range window.
ds_statistics
(Contiguous Dataset)
INTEGER_4
(5)
Dimension scale for QA statistics
(not_set)
counts
Derived (QA)
QA statistics array index
flag_values: 1, 2, 3, 4, 5
flag_meanings : number_of_points minimum maximum average standard_deviation
Group: /ancillary_data
h5es_id(Attribute) 2
Description(Attribute)Contains information ancillary to the data product. This may include product characteristics, instrument characteristics and/or processing constants.
data_rate(Attribute)Parameters in this group are single-instances valid for the entire file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
control
(Compact Dataset)
STRING:4096
(1)
Control File
(not_set)
not_set
Operations
PGE-specific control file used to generate this granule. To re-use, replace breaks (BR) with linefeeds.
data_end_gpssow
(Compact Dataset)
DOUBLE
(1)
Ending GPS Seconds-of-Week
(not_set)
seconds
Derived
GPS seconds-of-week for the last data point in the granule. (not referenced to granule_gps_epoch)
data_end_gpsweek
(Compact Dataset)
INTEGER_4
(1)
Ending GPSWeek
(not_set)
weeks
Derived
GPS week number for the last data point in the granule. (not referenced to granule_gps_epoch)
data_end_utc
(Compact Dataset)
STRING:27
(1)
End UTC
(not_set)
not_set
Derived
UTC (in CCSDS-A format) of the last data point within the granule. (not referenced to granule_gps_epoch)
data_start_gpssow
(Compact Dataset)
DOUBLE
(1)
Starting GPS Seconds-of-Week
(not_set)
seconds
Derived
GPS seconds-of-week for the first data point in the granule. (not referenced to granule_gps_epoch)
data_start_gpsweek
(Compact Dataset)
INTEGER_4
(1)
Starting GPSWeek
(not_set)
weeks since 1980-01-06T00:00:00Z
Derived
GPS week number for the first data point in the granule. (not referenced to granule_gps_epoch)
data_start_utc
(Compact Dataset)
STRING:27
(1)
Actual Start UTC of Granule
(not_set)
not_set
Derived
UTC (in CCSDS-A format) of the first data point within the granule. (not referenced to granule_gps_epoch)
end_latitude
(Compact Dataset)
DOUBLE
(1)
Ending Latitude
(not_set)
degrees_north
Derived
Best-available latitude (product-specific) in degrees at last data point within the granule.
end_longitude
(Compact Dataset)
DOUBLE
(1)
Ending Longitude
(not_set)
degrees_east
Derived
Best-available longitude (product-specific) in degrees at last data point within the granule.
granule_end_utc
(Compact Dataset)
STRING:27
(1)
Ending Time of Granule
(not_set)
not_set
Derived
Requested end time (UTC CCSDS-A) of this granule.
granule_gps_epoch
(Contiguous Dataset)
DOUBLE
(1)
Elapsed GPS Seconds
(not_set)
seconds since 1980-01-06T00:00:00.000000Z
Derived
Number of GPS seconds since GPS epoch (1980-01-06T00:00:00.000000Z UTC) corresponding to the requested start time of the granule. Add this value to the data [delta_time] parameter to compute [gps_seconds] for each data point.
granule_start_utc
(Compact Dataset)
STRING:27
(1)
Requested Start Time of Granule
(not_set)
not_set
Derived
Requested start time (UTC CCSDS-A) of this granule.
release
(Compact Dataset)
STRING:80
(1)
Release Number
(not_set)
not_set
Operations
This identifies the release number of the granule. The release number is incremented when the software or ancillary data used to create the granule has been changed.
start_latitude
(Compact Dataset)
DOUBLE
(1)
Starting Latitude
(not_set)
degrees_north
Derived
Best-available latitude (product-specific) in degrees at first data point within the granule (corresponds to data_start_utc).
start_longitude
(Compact Dataset)
DOUBLE
(1)
Starting Longitude
(not_set)
degrees_east
Derived
Best-available longitude (product-specific) in degrees at first data point within the granule (corresponds to data_start_utc).
version
(Compact Dataset)
STRING:80
(1)
Version
(not_set)
counts
Operations
This identifies the version number of this granule within the release. It is a sequential number corresponding to the number of times the granule has been reprocessed for the current release.
Group: /ancillary_data/general
h5es_id(Attribute) 3
Description(Attribute)Contains general ancillary parameters.
data_rate(Attribute)Parameters in this group are single-instances valid for the entire file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
apply_atm_delay
(Compact Dataset)
INTEGER_4
(1)
Apply Atmosphere Delay Flag
(not_set)
counts
MABEL Detailed Design Doc
Indicates application of atmosphere delay correction to photon heights; 0=not applied, 1=applied.
flag_values: 0, 1
flag_meanings : atm_delay_not_applied atm_delay_applied
mab_clock_freq
(Compact Dataset)
FLOAT
(1)
Clock Frequency
(not_set)
hertz
MABEL Engineering Docs
Nominal MABEL clock frequency.
mab_fcell_conv
(Compact Dataset)
FLOAT
(1)
Fractional Cell Conversion Factor
(not_set)
ns
MABEL Engineering Docs
MABEL fractional cell conversion factor.
mab_range_conv
(Compact Dataset)
FLOAT
(1)
Range Conversion Factor
(not_set)
ns
MABEL Engineering Docs
MABEL range conversion factor.
Group: /ancillary_data/histograms
h5es_id(Attribute) 43
Description(Attribute)Contains ancillary data used during the derivation of histogram data.
data_rate(Attribute)Parameters in this group are single-instances valid for the entire file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
alt_hist_bin_bot_off
(Compact Dataset)
FLOAT
(1)
Altimetry histogram Bin Bottom offset
(not_set)
meters
MABEL Detailed Design Doc
Meters subtracted from the DEM height to define the bottom of the noise computation range window.
alt_hist_bin_size
(Compact Dataset)
FLOAT
(1)
Altimery histogram Bin Size
(not_set)
meters
MABEL Detailed Design Doc
Size is meters of the altimetry histogram bins.
alt_hist_bin_top_off
(Compact Dataset)
FLOAT
(1)
Altimetry histogram Bin Top Offset
(not_set)
meters
MABEL Detailed Design Doc
Meters added to the DEM height to define the top of the altimetry histogram range window.
atm_hist_bin_bot_off
(Compact Dataset)
FLOAT
(1)
Atmosphere histogram Bin Bottom Offset
(not_set)
meters
MABEL Detailed Design Doc
Meters subtracted from the DEM height to define the bottom of the atmosphere histogram range window.
atm_hist_bin_size
(Compact Dataset)
FLOAT
(1)
Atmosphere histogram Bin Size
(not_set)
meters
MABEL Detailed Design Doc
Size in meters of the atmosphere histogram bins.
atm_hist_bin_top_off
(Compact Dataset)
FLOAT
(1)
Atmosphere histogram Bin Top Offset
(not_set)
meters
MABEL Detailed Design Doc
Meters added to the DEM height to define the top of the atmosphere histogram range window.
Group: /ancillary_data/photon_range_window
h5es_id(Attribute) 44
Description(Attribute)Contains ancillary data used to define the range windows for photons, noise, DEM and mean sea surface.
data_rate(Attribute)Parameters in this group are single-instances valid for the entire file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
dem_range_bot_off
(Compact Dataset)
FLOAT
(1)
DEM Range bottom offset
(not_set)
meters
MABEL Detailed Design Doc
Meters subtracted from the DEM height to define the bottom of the photon range window.
dem_range_top_off
(Compact Dataset)
FLOAT
(1)
DEM Range top offset
(not_set)
meters
MABEL Detailed Design Doc
Meters added to the DEM height to define the top of the photon range window.
mss_range_bot_off
(Compact Dataset)
FLOAT
(1)
MSS Range bottom offset
(not_set)
meters
MABEL Detailed Design Doc
Meters subtracted from the MSS height to define the bottom of the photon range window.
mss_range_top_off
(Compact Dataset)
FLOAT
(1)
MSS Range top offset
(not_set)
meters
MABEL Detailed Design Doc
Meters added to the MSS height to define the top of the photon range window.
noise_range_bot_off
(Compact Dataset)
FLOAT
(1)
Noise Range bottom offset
(not_set)
meters
MABEL Detailed Design Doc
Meters subtracted from the DEM height to define the bottom of the noise computation range window.
noise_range_top_off
(Compact Dataset)
FLOAT
(1)
Noise Range top offset
(not_set)
meters
MABEL Detailed Design Doc
Meters added to the DEM height to define the top of the noise computation range window.
Group: /ancillary_data/segment_sizes
h5es_id(Attribute) 45
Description(Attribute)Contains ancillary data used to define altimetry, atmosphere and meteorological segment sizes.
data_rate(Attribute)Parameters in this group are single-instances valid for the entire file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
alt_seg_shots
(Compact Dataset)
INTEGER_4
(1)
Altimetry segment size
(not_set)
counts
MABEL Detailed Design Doc
Number of laser shots defining an altimetry segment.
atm_seg_shots
(Compact Dataset)
INTEGER_4
(1)
Atmosphere segment size
(not_set)
counts
MABEL Detailed Design Doc
Number of laser shots defining an atmosphere segment.
Group: /ancillary_data/signal_finding
h5es_id(Attribute) 65
Description(Attribute)Contains ancillary data used by the signal finding routine described in the ICESat-2 Global Geolocated Photons ATBD.
data_rate(Attribute)Parameters in this group are single-instances valid for the entire file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
alpha_max
(Compact Dataset)
FLOAT
(1)
Maximum Slope
(not_set)
radians
ICESat 2 Global Geolocated Photons ATBD
Maximum slope allowed for slant histogram; if larger than this then dont attempt to fill gap. ATBD label [alpha]max
deslw
(Compact Dataset)
FLOAT
(1)
Height Window
(not_set)
meters
ICESat 2 Global Geolocated Photons ATBD
Half the value of the height window used for slant histogramming relative to the surface defined by the linear fit to the surrounding photons at slope, [alpha]. ATBD label: [delta]Eslw
dt_max
(Compact Dataset)
FLOAT
(1)
Max Time Interval
(not_set)
seconds
ICESat 2 Global Geolocated Photons ATBD
Maximum time interval over which to select photons to histogram. ATBD label: [delta]t[sub]max
dt_min
(Compact Dataset)
FLOAT
(1)
Min Time Interval
(not_set)
seconds
ICESat 2 Global Geolocated Photons ATBD
Minimum time interval over which to select photons to histogram. ATBD label: [delta]t[sub]min
dtime
(Chunked Dataset)
FLOAT
(UNLIMITED)
time increment
(not_set)
seconds
GblGeoPhotons ATBD
Time increment at which to step through the photon cloud in a granule. Histograms will be formed at each time interval to identify signal photon events.
dz_max1
(Compact Dataset)
FLOAT
(1)
Max Binsize1
(not_set)
meters
ICESat 2 Global Geolocated Photons ATBD
Maximum height bin size for histogramming for first sweep . ATBD label: [delta]z[sub]max1
dz_max2
(Compact Dataset)
FLOAT
(1)
Max Binsize2
(not_set)
meters
ICESat 2 Global Geolocated Photons ATBD
Maximum height bin size for histogramming for second sweep. ATBD label: [delta]z[sub]max2
dz_min
(Compact Dataset)
FLOAT
(1)
Min Binsize
(not_set)
meters
ICESat 2 Global Geolocated Photons ATBD
Minimum height bin size for histogramming for first sweep. ATBD label: [delta]z[sub]min
e_gap
(Compact Dataset)
FLOAT
(1)
Gapfit Multiplier
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Multiplier of [sigma]gapfit, the standard deviation of the residuals between the actual photon events used to estimate the surface across a gap, Egap, and the estimate, Egap. All photons with height > egap _ [sigma]gapfit are edited from the next iteration of calculating Egap. ATBD label: e[sub]gap
ea
(Compact Dataset)
FLOAT
(1)
EA Multiplier
(not_set)
meters
ICESat 2 Global Geolocated Photons ATBD
Multiplier of Ha_[sigma] used to determine which bins in Ha may contain signal photon events. ATBD label: e[sub]a
el
(Compact Dataset)
FLOAT
(1)
Stdev Multiplier for Fit
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Multiplier of standard deviation of linear fit to signal photons used to edit out noise during running linear fit edit. ATBD label: e[sub]l
em
(Compact Dataset)
FLOAT
(1)
Stdev Multiplier for Signal
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Multiplier of standard deviation of the number of background photon events per bin used in determining if signal photons exist. ATBD label: e[sub]m
em_multi
(Compact Dataset)
FLOAT
(1)
Multiplier for EM
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Multiplier of em used to determine Thsig2, threshold for singular bins. ATBD label: e[sub]m_multi
hspan_min
(Compact Dataset)
FLOAT
(1)
Min Height Span
(not_set)
meters
ICESat 2 Global Geolocated Photons ATBD
Minimum height span for each time interval of photons with confidence flag > 0. If the height span is < htspanmin then all photons not previously selected within +/- htspanmin/2 of the median height of the signal photons selected are marked with a confidence flag of 1. ATBD label: Htspanmin
maxiter_gap
(Compact Dataset)
INTEGER_4
(1)
Max Gap Iterations
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
The maximum number of iterations for calculation of Egap. ATBD label: maxiter[sub]gapfit
min_bins
(Compact Dataset)
INTEGER_4
(1)
Minimum Bins
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Minimum number of bins in a histogram required for the algorithm to be able to process the histogram. ATBD label: Nbin[sub]min
n_dz1
(Compact Dataset)
INTEGER_4
(1)
Num Binsize1 Increments
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
The number of [delta]z values used for first [delta]z interval [delta]zmin and [delta]zmax1. ATBD label: n[delta]z1
n_dz2
(Compact Dataset)
INTEGER_4
(1)
Num Binsize2 increments
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
The number of [delta]z values used for second [delta]z interval [delta]zmax1 and [delta]zmax2. ATBD label: n[delta]z2
n_p_min
(Compact Dataset)
INTEGER_4
(1)
Min Photons
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
The minimum number of photons over which to perform a linear fit to estimate the surface profile across a gap. ATBD label:Nphot[sub]min
r
(Compact Dataset)
FLOAT
(1)
Ratio for Signal
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Minimum ratio of max number of photons in histogram bin to mean noise value that must exist to consider a bin a signal bin. ATBD label: R
r2
(Compact Dataset)
FLOAT
(1)
Ratio of Signal to Total
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Minimum ratio of (maximum number of photons in any one bin of contiguous signal bins)/(Maximum number of photons in largest bin) in order to accept a group of signal bins as real signal. ATBD label: R2
seg_time_len
(Compact Dataset)
FLOAT
(1)
Segment Time Interval
(not_set)
seconds
ICESat 2 Global Geolocated Photons ATBD
Time increment at which to step through the photon cloud Histograms will be formed at each [delta]time to identify signal photon events. ATBD label: [delta]time
snr_low
(Compact Dataset)
FLOAT
(1)
SNR Low
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Signal to noise ratio below which all selected signal has low confidence. ATBD label: snrlow
snr_med
(Compact Dataset)
FLOAT
(1)
SNR Med
(not_set)
counts
ICESat 2 Global Geolocated Photons ATBD
Signal to noise ratio above which all selected signal has high confidence. Selected signal with signal to noise ratio between snrlow and snrmed is marked as medium confidence. ATBD label: snrmed
Group: /ancillary_data/streak_removal
h5es_id(Attribute) 46
Description(Attribute)Contains ancillary data used by the streak-removal algorithm.
data_rate(Attribute)Parameters in this group are single-instances valid for the entire file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
remove_streaks_1064
(Compact Dataset)
INTEGER_4
(1)
1064 streak removal flag
(not_set)
counts
MABEL Detailed Design Doc
Indicates activation of streak removal algorithm.
remove_streaks_532
(Compact Dataset)
INTEGER_4
(1)
532 streak removal flag
(not_set)
counts
MABEL Detailed Design Doc
Indicates activation of streak removal algorithm.
streak_m
(Compact Dataset)
FLOAT
(1)
Streak M
(not_set)
meters
MABEL Detailed Design Doc
Minimum distance in meters between start and end photons to consider consecutive photons a streak.
streak_n
(Compact Dataset)
FLOAT
(1)
Streak N
(not_set)
meters
MABEL Detailed Design Doc
Distance in meters between consecutive photons adequate to consider those photons not part of a streak.
Group: /channel
h5es_id(Attribute) 64
Description(Attribute)Contains per-channel data.
data_rate(Attribute)Parameters in this group at the data rate of each respective subgroup.
Group: /channel/altimetry
h5es_id(Attribute) 37
Description(Attribute)Contains per-channel channel altimetry data.
data_rate(Attribute)Parameters in this group at the altimetry segment rate (defined in /ancillary_data/segment_sizes/alt_seg_shots).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ch_latitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Channel Latitude
(latitude)
degrees_north
Derived (Geolocation ATBD)
Latitude at midpoint of the segment. Derived from geolocated photons, WGS84, North=+
ch_longitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Channel Longitude
(longitude)
degrees_east
Derived (Geolocation ATBD)
Channel Longitude at the midpoint of the segment. Derived from geolocated photons, WGS84, North=+
delta_time_end
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time End
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Exclusive elapsed time at the end of each (or the) data segment, referenced to granule_gps_epoch.
delta_time_start
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time Start
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Inclusive elapsed time at the start of each (or the) data segment, referenced to granule_gps_epoch.
noise_rate
(Chunked Dataset)
FLOAT
(UNLIMITED)
noise_rate
(not_set)
hertz
Derived
Noise Rate. Number of photons in the noise range window divided by segment time duration.
Group: /channel/altimetry/histogram
h5es_id(Attribute) 40
Description(Attribute)Contains altimetry histograms for this channel derived from the number of photons detected within a region defined by the altimetry histogram range window (/ancillary_data/histograms) and the altimetry segment length (/ancillary_data/segment_sizes/alt_seg_shots).
data_rate(Attribute)Parameters in this group at the altimetry segment rate (defined in /ancillary_data/segment_sizes/alt_seg_shots).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
alt_hist_ht_top
(Chunked Dataset)
FLOAT
(UNLIMITED)
Histogram Height
(height)
meters
Derived
Height to the top bin of the altimetry histogram
alt_hist_n_shots
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
n_hist_shots
(not_set)
counts
Derived
The n_hist_shots parameter is the number of unique shots, with at least one photon detection, found within the histogram time segment and histogram range window
alt_histogram
(Chunked Dataset)
INTEGER_4
(200, UNLIMITED)
altimetry_histogram
(not_set)
counts
Derived
altimetry histogram - count of the number of photons in each defined height bin. Dimensions are time and bin_number. The first element of the bin dimension corresponds to the highest bin.
Group: /channel/altimetry/signal_finding
h5es_id(Attribute) 63
Description(Attribute)Parameters related to the L2A signal finding routine.
data_rate(Attribute)Parameters in this group at the altimetry segment rate (defined in /ancillary_data/segment_sizes/alt_seg_shots).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
bg_mean
(Chunked Dataset)
FLOAT
(UNLIMITED)
Background Mean
(not_set)
counts
Derived (signal finding)
The mean of the number of background counts expected in one elevation bin of the signal finding histogram.
bg_sdev
(Chunked Dataset)
FLOAT
(UNLIMITED)
Background Standard Deviation
(not_set)
counts
Derived (signal finding)
The standard deviation of the number of background counts expected in one elevation bin of the signal finding histogram.
delta_time
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Elapsed seconds since granule_gps_epoch.
n_ph_signal
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
Number of signal photons
(not_set)
counts
Derived (signal finding)
The number of photons determined as signal within the segment. This includes padding (ph_class=1).
n_ph_total
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
Total Photon count
(not_set)
counts
Derived (signal finding)
The total number of photons within the segment that fall within the photon range window.
ph_end_index
(Chunked Dataset)
INTEGER_8
(UNLIMITED)
Photon End Index
(not_set)
counts
Derived
Index number into the associated array of photons for the last photon within this segment. The array indexing starts at 1, not 0. This is an index into the range-window-filtered photons stored on this product. It does not represent the photons used in noise and histogram computations since those computations use different range windows.
ph_start_index
(Chunked Dataset)
INTEGER_8
(UNLIMITED)
Photon starting index
(not_set)
counts
Derived
Index number into the associated array of photons for the first photon within this segment. The array indexing starts at 1, not 0. This is an index into the range-window-filtered photons stored on this product. It does not represent the photons used in noise and histogram computations since those computations use different range windows.
sig_dt
(Chunked Dataset)
FLOAT
(UNLIMITED)
signal finding time interval
(not_set)
sec
Derived (signal finding)
Integration time over which the majority of the signal photon cloud events within this segment were classified.
sig_dz
(Chunked Dataset)
FLOAT
(UNLIMITED)
bin size for signal finding
(not_set)
m
Derived (signal finding)
Histogram size for which the majority of the photon events within this segment were classified.
Group: /channel/atmosphere
h5es_id(Attribute) 49
Description(Attribute)Contains atmosphere histograms and related parameters for this channel. Histograms are derived from the number of photons detected within a region defined by the atmosphere histogram range window (/ancillary_data/histograms) and the atmosphere segment length (/ancillary_data/segment_sizes/atm_seg_shots).
data_rate(Attribute)Parameters in this group at the atmosphere segment rate (defined in /ancillary_data/segment_sizes/atm_seg_shots).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
atm_hist_ht_top
(Chunked Dataset)
FLOAT
(UNLIMITED)
Histogram Top
(height)
meters
Derived
Height to the top bin of the atmosphere histogram
atm_hist_n_shots
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
n_hist_shots
(not_set)
counts
Derived
The n_hist_shots parameter is the number of unique shots, with at least one photon detection, found within the histogram time segment and histogram range window
atm_histogram
(Chunked Dataset)
INTEGER_4
(500, UNLIMITED)
atmosphere_histogram
(not_set)
counts
Derived
atmosphere histogram - count of the number of photons in each defined height bin. Dimensions are time and bin_number. The first element of the bin dimension corresponds to the highest bin.
bg_mean
(Chunked Dataset)
FLOAT
(UNLIMITED)
Atmosphere Background Mean
(not_set)
counts
Derived (Photon Classification ATBD)
Noise background mean of the atmosphere segment. This value is computed by the signal finding routine using its signal-removing technique to create background-only statistics.
bg_sdev
(Chunked Dataset)
FLOAT
(UNLIMITED)
Background Standard Deviation
(not_set)
counts
Derived (Photon Classification ATBD)
Background standard deviation for the Atmosphere segment. This value is computed by the signal finding routine using its signal-removing technique to create background-only statistics.
ch_latitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Channel Latitude
(latitude)
degrees_north
Derived (Geolocation ATBD)
Latitude at midpoint of the segment. Derived from geolocated photons, WGS84, North=+
ch_longitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Channel Longitude
(longitude)
degrees_east
Derived (Geolocation ATBD)
Channel Longitude at the midpoint of the segment. Derived from geolocated photons, WGS84, North=+
delta_time_end
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time End
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Exclusive elapsed time at the end of each (or the) data segment, referenced to granule_gps_epoch.
delta_time_start
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time Start
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Inclusive elapsed time at the start of each (or the) data segment, referenced to granule_gps_epoch.
Group: /channel/photon
h5es_id(Attribute) 52
Description(Attribute)Contains photon cloud data for this channel.
data_rate(Attribute)Parameters in this group are at the photon detection rate.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
delta_time
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Elapsed seconds since granule_gps_epoch.
ph_class
(Chunked Dataset)
INTEGER_1
(UNLIMITED)
Photon Classification Flag
(not_set)
counts
Derived (signal finding ATBD)
Photon classification flag. 0=noise, 1=buffer, 2=low, 3=medium, 4=high
flag_values: 0, 1, 2, 3, 4
flag_meanings : noise buffer low medium high
ph_class_src
(Chunked Dataset)
INTEGER_1
(UNLIMITED)
Photon Classification Source
(not_set)
counts
Derived (signal finding ATBD)
Source of the Photon classification flag. 0=none or no background, 1=ellipsoidal histogram, 2=slant histogram, 3=padding
flag_values: 0, 1, 2, 3, 4
flag_meanings : none ellipsoidal slant pad no_bg
ph_h
(Chunked Dataset)
FLOAT
(UNLIMITED)
elev
(height)
meters
Derived (Geolocation ATBD)
Photon height above the WGS84 ellipsoid derived from geolocation.
ph_id
(Chunked Dataset)
INTEGER_2
(UNLIMITED)
photon_id
(not_set)
counts
Derived
Photon-per-shot counter. Increments for each photon detected within a shot. Together with shot_num, forms a unique identifier for each photon. However, be aware of shot_num rollover.
ph_latitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Photon Latitude
(latitude)
degrees_north
Derived (Geolocation ATBD)
Photon Latitude derived from geolocation, WGS84, North=+
ph_longitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Photon Longitude
(longitude)
degrees_east
Derived (Geolocation ATBD)
Photon Longitude derived from geolocation, WGS84, North=+
ph_shot
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
Photon shot number
(not_set)
counts
L1A Shottag packet
Shot Number, copied from the L1A shottag packet.
Group: /channel/quality_assessment
h5es_id(Attribute) 53
Description(Attribute)Contains per-channel QA statistics.
data_rate(Attribute)Parameters in this group at 0.1Hz.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
delta_time_end
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time End
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Exclusive elapsed time at the end of each (or the) data segment, referenced to granule_gps_epoch.
delta_time_start
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time Start
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Inclusive elapsed time at the start of each (or the) data segment, referenced to granule_gps_epoch.
first_lat
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Initial latitude
(not_set)
degrees_north
Derived (QA)
Latitude computed for initial photon.
first_lon
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Initiallongitude
(not_set)
degrees_east
Derived (QA)
Longitude computed for initial photon.
last_lat
(Chunked Dataset)
DOUBLE
(UNLIMITED)
final latitude
(not_set)
degrees_north
Derived (QA)
Latitude computed for final photon.
last_lon
(Chunked Dataset)
DOUBLE
(UNLIMITED)
final longitude
(not_set)
degrees_east
Derived (QA)
Longitude computed for final photon.
n_ht
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
number of heights
(not_set)
counts
Derived (QA)
Number of height measurements computed.
shots_w_streak
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
shots with streaks
(not_set)
counts
Derived (QA)
Number of shots with streaks.
streak_n_del
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
streaks deleted
(not_set)
counts
Derived (QA)
Number of streaks deleted.
streaklen
(Chunked Dataset)
DOUBLE
(5, UNLIMITED)
streak length
(not_set)
meters
Derived (QA)
Streak length statistics. Values are in the order number_of_points, minimum, maximum, average, standard_deviation.
Group: /flight_parameters
h5es_id(Attribute) 4
Description(Attribute)Contains flight/scenario characteristics derived from information provided by the MABEL instrument team.
data_rate(Attribute)Parameters in this group are single-instances valid for the entire file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
angle_1064_mrad
(Compact Dataset)
FLOAT
(50)
1064 Angle
(not_set)
mrad
Ancillary Scenario File
Angle of each 1064 connector
angle_532_mrad
(Compact Dataset)
FLOAT
(50)
532 Angle
(not_set)
mrad
Ancillary Scenario File
Angle of each 532 connector
channel_1064
(Compact Dataset)
INTEGER_4
(50)
1064 Channel Numbers
(not_set)
counts
Ancillary Scenario File
Channel number for each 1064 channel
channel_1064_flag
(Compact Dataset)
INTEGER_4
(50)
1064 Channel Flag
(not_set)
counts
Ancillary Scenario File
Channel flag (0=processed, 1=skipped)
channel_532
(Compact Dataset)
INTEGER_4
(50)
532 Channel Numbers
(not_set)
counts
Ancillary Scenario File
Channel number for each 532 channel
channel_532_flag
(Compact Dataset)
INTEGER_4
(50)
532 Channel Flag
(not_set)
counts
Ancillary Scenario File
Channel flag (0=processed, 1=skipped)
comments
(Compact Dataset)
STRING:255
(1)
Flight Comments
(not_set)
not_set
Ancillary Flight File
Comments from the MABEL flight team
connector_1064
(Compact Dataset)
INTEGER_4
(50)
1064 Connector Numbers
(not_set)
counts
Ancillary Scenario File
Connector number for each 1064 channel
connector_532
(Compact Dataset)
INTEGER_4
(50)
532 Connector Numbers
(not_set)
counts
Ancillary Scenario File
Connector number for each 532 channel
ds_pulse_shape
(Contiguous Dataset)
INTEGER_1
(20)
Pulse Shape Index
(not_set)
ns
MABEL Flight Team
index of the Transmit Pulse Shape (tx_pulse_shape_x)
ds_tof_port
(Contiguous Dataset)
INTEGER_1
(50)
TOF channel port
(not_set)
not_set
not_set
Dimension scale for TOF channels.
elevation_1064_mrad
(Compact Dataset)
FLOAT
(50)
1064 Elevation
(not_set)
mrad
Ancillary Scenario File
Elevation for each 1064 connector (mrad)
elevation_532_mrad
(Compact Dataset)
FLOAT
(50)
532 Elevation
(not_set)
mrad
Ancillary Scenario File
Elevation for each 532 connector (mrad)
fiber_1064
(Compact Dataset)
INTEGER_4
(50)
1064 Fiber Numbers
(not_set)
counts
Ancillary Scenario File
Fiber number for each 1064 channel
fiber_532
(Compact Dataset)
INTEGER_4
(50)
532 Fiber Numbers
(not_set)
counts
Ancillary Scenario File
Fiber number for each 532 channel
filt_energy_1064_u
(Compact Dataset)
FLOAT
(50)
1064 Filtered Energy
(not_set)
uJ
Ancillary Scenario File
Filtered energy for each 1064 channel (uJ)
filter_1064
(Compact Dataset)
FLOAT
(50)
1064 Filter per Channel
(not_set)
mm
Ancillary Scenario File
Filter for each 1064 channel
filter_532
(Compact Dataset)
FLOAT
(50)
532 Filter per Channel
(not_set)
mm
Ancillary Scenario File
Filter for each 532 channel
filter_density_1064
(Compact Dataset)
FLOAT
(2)
1064 Filter Density
(not_set)
counts
Ancillary Scenario File
Density of the 1064 filters
filter_density_532
(Compact Dataset)
FLOAT
(2)
532 Filter Density
(not_set)
counts
Ancillary Scenario File
Density of the 532 filters
filter_size_1064
(Compact Dataset)
FLOAT
(2)
1064 Filter Size
(not_set)
mm
Ancillary Scenario File
Size of 1064 filter(s)
filter_size_532
(Compact Dataset)
FLOAT
(2)
532 Filter Size
(not_set)
mm
Ancillary Scenario File
Size of 532 filter(s)
filtered_energy_532_u
(Compact Dataset)
FLOAT
(50)
532 Filtered Energy
(not_set)
uJ
Ancillary Scenario File
Filtered energy for each 532 channel (uJ)
flight_end_utc
(Compact Dataset)
STRING:28
(1)
Ending Time of Flight
(not_set)
not_set
Ancillary Flight File
UTC stop time of the flight in CCSDS-A format
flight_location
(Compact Dataset)
STRING:255
(1)
Flight Location
(not_set)
counts
Ancillary Flight File
Primary location of the flight
flight_number
(Contiguous Dataset)
INTEGER_4
(1)
Flight Number
(not_set)
counts
Ancillary Flight File
Incremental flight number
flight_start_utc
(Compact Dataset)
STRING:28
(1)
Start Time of Flight
(not_set)
not_set
Ancillary Flight File
UTC start time of the flight in CCSDS-A format
flight_version
(Compact Dataset)
STRING:80
(1)
Flight File Version
(not_set)
counts
Ancillary Flight File
Version number of the ancillary flight file.
gps_rate
(Compact Dataset)
INTEGER_4
(1)
GPS Rate
(not_set)
hertz
Ancillary Flight File
Data rate of the GPS (Hz)
imu_bias
(Compact Dataset)
DOUBLE
(3)
IMU Bias
(not_set)
mrad
Ancillary Scenario File
IMU bias coefficients (IMU to vehicle frame); roll, pitch, yaw (mrad)
imu_rate
(Compact Dataset)
INTEGER_4
(1)
IMU Rate
(not_set)
hertz
Ancillary Flight File
Data rate of the IMU (Hz)
label
(Compact Dataset)
STRING:255
(1)
Flight Label
(not_set)
not_set
Ancillary Flight File
Unique label associated with the flight
laser_rate
(Compact Dataset)
INTEGER_4
(1)
Laser Rate
(not_set)
hertz
Ancillary Flight File
Data rate of the Laser (Hz)
mab_bias_1064
(Compact Dataset)
DOUBLE
(3)
MABEL Bias 1064
(not_set)
mrad
Ancillary Scenario File
1064 MABEL bias coefficients (MABEL frame to IMU); roll, pitch, heading (mrad)
mab_bias_532
(Compact Dataset)
DOUBLE
(3)
MABEL Bias 532
(not_set)
mrad
Ancillary Scenario File
532 MABEL bias coefficients (MABEL frame to IMU); roll, pitch, heading (mrad)
mab_imu_off
(Compact Dataset)
DOUBLE
(3)
MABEL IMU Offset
(not_set)
mrad
Ancillary Scenario File
IMU origin ofsets; roll, pitch, heading (mrad)
mab_lrp_off
(Compact Dataset)
DOUBLE
(3)
MABEL Laser Reference Point Offset
(not_set)
mrad
Ancillary Scenario File
Laser reference point offsets; roll, pitch, heading (mrad)
num_channels_1064
(Compact Dataset)
INTEGER_4
(1)
Number of 1064 Channels
(not_set)
counts
Derived
Number of 1064 channels present during the flight.
num_channels_532
(Compact Dataset)
INTEGER_4
(1)
Number of 532 channels
(not_set)
counts
Derived
Number of 532 channels present during the flight.
num_filter_1064
(Compact Dataset)
INTEGER_4
(1)
Number of 1064 Filters
(not_set)
counts
Derived
Number of 1064 filters present during the flight.
num_filter_532
(Compact Dataset)
INTEGER_4
(1)
Number of 532 filters
(not_set)
counts
Derived
Number of 532 filters present during the flight.
num_poi
(Compact Dataset)
INTEGER_4
(1)
Number of POIs
(not_set)
counts
Ancillary Flight File
Number of points-of-interest for the flight
offset2_on_ground_1064_m
(Compact Dataset)
FLOAT
(50)
1064 Offset 2
(not_set)
m
Ancillary Scenario File
Pitch offset on ground for each 1064 channel (m)
offset2_on_ground_532_m
(Compact Dataset)
FLOAT
(50)
532 Offset 2
(not_set)
m
Ancillary Scenario File
Pitch offset on ground for each 532 channel (m)
offset_on_ground_1064_m
(Compact Dataset)
FLOAT
(50)
1064 Offset
(not_set)
m
Ancillary Scenario File
Roll offset on ground for each 1064 channel (m)
offset_on_ground_532_m
(Compact Dataset)
FLOAT
(50)
532 Offset
(not_set)
m
Ancillary Scenario File
Roll offset on ground of each 532 channel (m)
path_length_1064_mm
(Compact Dataset)
FLOAT
(50)
1064 Path Length
(not_set)
mm
Ancillary Scenario File
Path length for each 1064 fiber (mm)
path_length_532_mm
(Compact Dataset)
FLOAT
(50)
532 Path Length
(not_set)
mm
Ancillary Scenario File
Path length for each 532 fiber (mm)
platform_longname
(Compact Dataset)
STRING:255
(1)
Platform Longname
(not_set)
not_set
Ancillary Scenario File
Long name of platform (aircraft) carrying the MABEL instrument.
platform_shortname
(Compact Dataset)
STRING:255
(1)
Platform Shortname
(not_set)
not_set
Ancillary Scenario File
Short name of platform (aircraft) carrying the MABEL instrument.
point_of_interest
(Compact Dataset)
STRING:255
(1)
Point of Interest
(not_set)
not_set
Ancillary Flight File
Points of interest identified by the mabel flight team
power_1064_mw
(Compact Dataset)
FLOAT
(50)
1064 Power
(not_set)
mW
Ancillary Scenario File
Power for each 1064 channel (mW)
power_532_mw
(Compact Dataset)
FLOAT
(50)
532 Power
(not_set)
mW
Ancillary Scenario File
Power for each 532 channel (mW)
raw_energy_1064_u
(Compact Dataset)
FLOAT
(50)
1064 Raw Energy
(not_set)
uJ
Ancillary Scenario File
Raw energy for each 1064 channel (uJ)
raw_energy_532_u
(Compact Dataset)
FLOAT
(50)
532 Raw Energy
(not_set)
uJ
Ancillary Scenario File
Raw energy for each 532 channel (uJ)
rec_power_1064_mw
(Compact Dataset)
FLOAT
(50)
1064 Received Power
(not_set)
mW
Ancillary Scenario File
Received power for each 1064 channel (mW)
rec_power_532_mw
(Compact Dataset)
FLOAT
(50)
532 Received Power
(not_set)
mW
Ancillary Scenario File
Received power for each 532 channel (mW)
reference_channel_1064
(Compact Dataset)
INTEGER_4
(1)
1064 Reference Channel
(not_set)
counts
Ancillary Scenario File
Representative channel for 1064
reference_channel_532
(Compact Dataset)
INTEGER_4
(1)
532 Reference Channel
(not_set)
counts
Ancillary Scenario File
Representative channel for 532
scenario_number
(Contiguous Dataset)
INTEGER_4
(1)
Scenario Number
(not_set)
counts
Ancillary Flight File
Associated mabel configuration scenario number
scenario_utc_time
(Compact Dataset)
STRING:17
(1)
Start Time of Scenario
(not_set)
not_set
Ancillary Scenario File
UTC start time of the scenario in CCSDS-A format
scenario_version
(Compact Dataset)
STRING:80
(1)
Scenario Version
(not_set)
not_set
Ancillary Scenario File
Version number of the ancillary scenario file
transmit_efficiency_1064
(Compact Dataset)
FLOAT
(50)
Transmit Efficiency 532
(not_set)
percent
MABEL Flight Team
The laboratory-measured efficiency of the transmit path, for each beam, from the point the transmit power was measured to its output point from MABEL.
transmit_efficiency_532
(Compact Dataset)
FLOAT
(50)
Transmit Efficiency 532
(not_set)
percent
MABEL Flight Team
The laboratory-measured efficiency of the transmit path, for each beam, from the point the transmit power was measured to its output point from MABEL.
tx_pulse_shape_1064
(Compact Dataset)
FLOAT
(20)
Transmit Pulse Shape 1064
(not_set)
ns
MABEL Flight Team
The laboratory-measured shape of the 1064 Transmit Pulse. Values are provided every 0.5 ns.
tx_pulse_shape_532
(Compact Dataset)
FLOAT
(20)
Transmit Pulse Shape 532
(not_set)
ns
MABEL Flight Team
The laboratory-measured shape of the 532 Transmit Pulse. Values are provided every 0.5 ns.
Group: /meteorology
h5es_id(Attribute) 59
Description(Attribute)This group contains meteorological information interpolated from GEOS5 FP_IT data produced by the Global Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center. A set of values is stored for each atmosphere segment (defined by /ancillary_data/segment_sizes/atm_seg_shots).
data_rate(Attribute)Parameters in this group at the atmosphere segment rate (defined in /ancillary_data/segment_sizes/atm_seg_shots).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
cloud
(Chunked Dataset)
FLOAT
(48, UNLIMITED)
cloud_fraction_for_radiation
(cloud_fraction_for_radiation)
1
GEOS5 FP_IT
The horizontal fractional cloud cover for each layer as seen by the radiation. In the vertical, clouds are assumed to fill the layer. This fraction is the combination of the models predicted large-scale and convective fractions that is used for radiative purposes. Interpolated to the midpoint of the atmosphere segment. Reported at the native GEOS5-FPIT levels up to approximately 30Km.
delta_time_end
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time End
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Exclusive elapsed time at the end of each (or the) data segment, referenced to granule_gps_epoch.
delta_time_start
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time Start
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Inclusive elapsed time at the start of each (or the) data segment, referenced to granule_gps_epoch.
ds_met_levels
(Contiguous Dataset)
INTEGER_4
(48)
met_levels_dim_scale
(not_set)
counts
not_set
Dimension scale for native GEOS5 FT-IP levels up to approximately 30Km. Actual height values vary due to the geoid.
h
(Chunked Dataset)
FLOAT
(48, UNLIMITED)
mid_layer_heights
(mid_layer_heights)
m
GEOS5 FP_IT
Geopotential height of the layer. Interpolated to the midpoint of the atmosphere segment. Reported at the native GEOS5-FPIT levels up to approximately 30Km.
o3
(Chunked Dataset)
FLOAT
(48, UNLIMITED)
ozone_mass_mixing_ration
(ozone_mass_mixing_ration)
kg kg-1
GEOS5 FP_IT
Ozone mass mixing ratio. Interpolated to the midpoint of the atmosphere segment. Reported at the native GEOS5-FPIT levels up to approximately 30Km.
pl
(Chunked Dataset)
FLOAT
(48, UNLIMITED)
mid_level_pressure
(mid_level_pressure)
Pa
GEOS5 FP_IT
The layer pressure defined as the average of the upper and lower edge pressures, PLE, in Pa. Interpolated to the midpoint of the atmosphere segment. Reported at the native GEOS5-FPIT levels up to approximately 30Km.
qv
(Chunked Dataset)
FLOAT
(48, UNLIMITED)
Specific Humidity
(specific_humidity)
kg kg-1
GEOS5 FP_IT
Specific humidity. Interpolated to the midpoint of the atmosphere segment. Reported at native GEOS5 FP-IT levels up to approximately 30Km.
rt_latitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Reference Track Latitude
(latitude)
degrees_north
Derived (Reference Track)
Latitude of the location on a center-beam, altitude-based reference track used for determining the DEM, geoid, surface_type, and photon/noise windows.
rt_longitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Reference Track Longitude
(longitude)
degrees_east
Derived (Reference Track)
Longitude of the location on a center-beam, altitude-based reference track used for determining the DEM, geoid, surface_type, and photon/noise windows.
slp
(Chunked Dataset)
FLOAT
(UNLIMITED)
sea_level_pressure
(sea_level_pressure)
Pa
GEOS5 FP_IT
The surface pressure reduced to sea level, in Pa. Over topography the reduction is done by assuming a lapse rate of 6.5 K km-1 from a free atmospheric temperature. Interpolated to the midpoint of the atmosphere segment.
t
(Chunked Dataset)
FLOAT
(48, UNLIMITED)
temperature
(air_temperature)
K
GOES5_FP_IT
Air temperature in Kelvin. Interpolated to the midpoint of the atmosphere segment. Reported at native GEOS5 FP-IT levels up to approximately 30Km.
u
(Chunked Dataset)
FLOAT
(48, UNLIMITED)
Eastward Wind Velocity
(eastward_wind)
m s-1
GEOS5 FP_IT
Eastward wind velocity Interpolated to the midpoint of the atmosphere segment. Reported at native GEOS5 FP-IT levels up to approximately 30Km.
v
(Chunked Dataset)
FLOAT
(48, UNLIMITED)
northward_wind
(northward_wind)
m s-1
GEOS5 FP_IT
Northward wind velocity. Interpolated to the midpoint of the atmosphere segment. Reported at native GEOS5 FP-IT levels up to approximately 30Km.
Group: /novatel_ins
h5es_id(Attribute) 22
Description(Attribute)Contains parameters provided within the L1A Novatel INS input file.
data_rate(Attribute)Most parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz). The imu2gps and s2body parameters are single instance values for the whole file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
delta_time
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Elapsed seconds since granule_gps_epoch.
ds_xyz
(Contiguous Dataset)
INTEGER_4
(3)
Dimension scale for XYZ axes.
(not_set)
counts
Geolocation ATBD
Dimension scale for XYZ axes (x, y, z)
flag_values: 1, 2, 3
flag_meanings : X Y Z
imu2gps_lever
(Compact Dataset)
FLOAT
(3)
Lever Arm XYZ
(not_set)
m
L1A INS Data File
IMU to GNSS Antenna Lever Arm X,Y,Z. This parameter may not be available for early MABEL flights (check FillValue).
s2body_rot
(Compact Dataset)
FLOAT
(3)
SC to Body XYZ
(not_set)
m
L1A INS Data File
Sensor-to-Body rotation X, Y, Z. This parameter may not be available for early MABEL flights (check FillValue).
Group: /novatel_ins/attitude
h5es_id(Attribute) 23
Description(Attribute)Contains aircraft orientation parameters from the Novatel INS instrument.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_heading
(Chunked Dataset)
DOUBLE
(UNLIMITED)
heading
(not_set)
degrees
L1A INS Data
Heading angle computed by GPS/INS routines
ins_heading_sd
(Chunked Dataset)
FLOAT
(UNLIMITED)
heading_sd
(not_set)
degrees
L1A INS Data
standard deviation of heading
ins_pitch
(Chunked Dataset)
DOUBLE
(UNLIMITED)
pitch
(not_set)
degrees
L1A INS Data
Pitch angle computed by GPS/INS routines
ins_pitch_sd
(Chunked Dataset)
FLOAT
(UNLIMITED)
pitch_sd
(not_set)
degrees
L1A INS Data
standard deviation of pitch
ins_roll
(Chunked Dataset)
DOUBLE
(UNLIMITED)
roll
(not_set)
degrees
L1A INS Data
Roll angle computed by GPS/INS routines
ins_roll_sd
(Chunked Dataset)
FLOAT
(UNLIMITED)
roll_sd
(not_set)
degrees
L1A INS Data
standard deviation of roll
Group: /novatel_ins/covariance
h5es_id(Attribute) 60
Description(Attribute)Contains velocity-related parameters.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_cx11
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Position X-X covariance
(not_set)
m2
L1A INS Data
Position X-X covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cx21
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Position Y-X covariance
(not_set)
m2
L1A INS Data
Position Y-X covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cx22
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Position Y-Y covariance
(not_set)
m2
L1A INS Data
Position Y-Y covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cx31
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Position Z-X covariance
(not_set)
m2
L1A INS Data
Position Z-X covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cx32
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Position Z-Y covariance
(not_set)
m2
L1A INS Data
Position Z-Y covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cx33
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Position Z-Z covariance
(not_set)
m2
L1A INS Data
Position Z-Z covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxee
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxee
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxeh
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxeh
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxen
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxen
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxhh
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxhh
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxnh
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxnh
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxnn
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxnn
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxvee
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxvee
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxveh
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxveh
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxven
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxven
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxvhh
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxvhh
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxvnh
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxvnh
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_cxvnn
(Chunked Dataset)
DOUBLE
(UNLIMITED)
ins_cxvnn
(not_set)
m2
L1A INS Data
cx11 covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_vel_cx11
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Velocity X-X covariance
(not_set)
m2/s2
L1A INS Data
Velocity X-X covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_vel_cx21
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Velocity Y-X covariance.
(not_set)
m2/s2
L1A INS Data
Velocity Y-X covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_vel_cx22
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Velocity Y-Y covariance
(not_set)
m2/s2
L1A INS Data
Velocity Y-Y covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_vel_cx31
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Velocity Z-X covariance.
(not_set)
m2/s2
L1A INS Data
Velocity Z-X covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_vel_cx32
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Velocity Z-Y covariance
(not_set)
m2/s2
L1A INS Data
Velocity Z-Y covariance. This parameter may not be available on early MABEL flights. Check FillValue.
ins_vel_cx33
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Velocity Z-Z covariance
(not_set)
m2/s2
L1A INS Data
elocity Z-Z covariance. This parameter may not be available on early MABEL flights. Check FillValue.
Group: /novatel_ins/ecef
h5es_id(Attribute) 24
Description(Attribute)Contains Earth-centered, earth-facing (ECEF) parameters from the Novatel INS instrument.
data_rate(Attribute)Most parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz). The imu2gps and s2body parameters are single instance values for the whole file.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_x_ecef
(Chunked Dataset)
DOUBLE
(UNLIMITED)
x_ecef
(not_set)
meters
L1A INS Data
X, earth-centered earth-fixed frame
ins_x_ecef_sd
(Chunked Dataset)
FLOAT
(UNLIMITED)
x_ecef_sd
(not_set)
meters
L1A INS Data
standard deviation of x_ecef
ins_y_ecef
(Chunked Dataset)
DOUBLE
(UNLIMITED)
y_ecef
(not_set)
meters
L1A INS Data
Y, earth-centered earth-fixed frame
ins_y_ecef_sd
(Chunked Dataset)
FLOAT
(UNLIMITED)
y_ecef_sd
(not_set)
meters
L1A INS Data
standard deviation of y_ecef
ins_z_ecef
(Chunked Dataset)
DOUBLE
(UNLIMITED)
z_ecef
(not_set)
meters
L1A INS Data
Z, earth-centered earth-fixed frame
ins_z_ecef_sd
(Chunked Dataset)
FLOAT
(UNLIMITED)
z_ecef_sd
(not_set)
meters
L1A INS Data
standard deviation of z_ecef
Group: /novatel_ins/flags
h5es_id(Attribute) 25
Description(Attribute)Contains flag data from the Novatel INS instrument.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_bad_field_count
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
bad_field_count
(not_set)
counts
L1A INS Data
Number of fields in this INS record that were determined as bad uponinput of the L1A INS data. These fields are generally filled with a value of -9999.99
ins_flag
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
imu_flag
(not_set)
counts
L1A INS Data
IMU Status - (0=ideal), where : 0=GPS position computed and used; 1=GPS range update applied; 2=no update applied (free mode); 3=zero velocity update applied (not moving); 4=phase update applied.
flag_values: 0, 1, 2, 3, 4
flag_meanings : position_used position_update free_mode not_moving phase_update
ins_num_gps_sat
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
Number of GPS Satellites
(not_set)
counts
L1A INS Data
Number of GPS satellites in observation
ins_quality_num
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
quality_num
(not_set)
counts
L1A INS Data
Quality factor (integer: 1=best; 6=worst)
Group: /novatel_ins/geolocation
h5es_id(Attribute) 26
Description(Attribute)Contains geolocation-related parameters from the Novatel INS instrument.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_comb_sd
(Chunked Dataset)
FLOAT
(UNLIMITED)
Combined standard deviation
(not_set)
meters
L1A INS Data
Combined N, E, and Hgt standard deviation
ins_ht_ell
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Height above ellipsoid
(height)
meters
L1A INS Data
Height above WGS84 ellipsoid
ins_latitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
latitude
(latitude)
degrees_north
L1A INS Data
Latitude, WGS84, North=+
ins_longitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
longitude
(longitude)
degrees_east
L1A INS Data
Longitude, WGS84, East=+
Group: /novatel_ins/rms
h5es_id(Attribute) 28
Description(Attribute)Contains RMS values from the Novatel INS instrument.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_ca_rms
(Chunked Dataset)
FLOAT
(UNLIMITED)
ca_rms
(not_set)
counts
L1A INS Data
C/A code RMS error
ins_l1_rms
(Chunked Dataset)
FLOAT
(UNLIMITED)
l1_rms
(not_set)
counts
L1A INS Data
L1 RMS error
Group: /novatel_ins/solar_angle
h5es_id(Attribute) 29
Description(Attribute)Contains solar angle parameters from the Novatel INS instrument.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_solar_azimuth
(Chunked Dataset)
FLOAT
(UNLIMITED)
Solar Azimuth
(not_set)
degrees
L1A INS Data
Azimuth of the sun from true north, at position and time
ins_solar_elevation
(Chunked Dataset)
FLOAT
(UNLIMITED)
Solar Elevation
(not_set)
degrees
L1A INS Data
elevation of sun above horizon, at position and time
Group: /novatel_ins/sta
h5es_id(Attribute) 30
Description(Attribute)Contains status parameters from the Novatel INS instrument.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_pdop
(Chunked Dataset)
FLOAT
(UNLIMITED)
position dilution of precision
(not_set)
counts
L1A INS Data
position dilution of precision (indicator of x, y, z geometry)
Group: /novatel_ins/time
h5es_id(Attribute) 31
Description(Attribute)Contains GPS time parameters from the Novatel INS instrument.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_gps_sow
(Chunked Dataset)
DOUBLE
(UNLIMITED)
gps seconds of week
(not_set)
seconds
L1A INS Data
GPS seconds of week corrected for receiver clock bias
ins_gps_week
(Chunked Dataset)
INTEGER_4
(UNLIMITED)
gps week
(not_set)
weeks
L1A INS Data
GPS week number
Group: /novatel_ins/velocity
h5es_id(Attribute) 27
Description(Attribute)Contains velocity-related parameters.
data_rate(Attribute)Parameters in this group are at the data rate of the L1B Novatel INS data packet (nominally 100hz)
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ins_v_east
(Chunked Dataset)
FLOAT
(UNLIMITED)
v_east
(not_set)
meters per second
L1A INS Data
Velocity component in the local level east axis
ins_v_north
(Chunked Dataset)
FLOAT
(UNLIMITED)
v_north
(not_set)
meters per second
L1A INS Data
Velocity component in the local level north axis
ins_v_up
(Chunked Dataset)
FLOAT
(UNLIMITED)
v_up
(not_set)
meters per second
L1A INS Data
Velocity component in the local level vertical axis
Group: /quality_assessment
h5es_id(Attribute) 6
Description(Attribute)Contains quality assessment data. This may include QA counters, QA along-track data and/or QA summary data.
data_rate(Attribute)Parameters in this group at the data rate defined in each quality_assessment subgroup.
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
delta_time_end
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time End
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Exclusive elapsed time at the end of each (or the) data segment, referenced to granule_gps_epoch.
delta_time_start
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time Start
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Inclusive elapsed time at the start of each (or the) data segment, referenced to granule_gps_epoch.
Group: /reference_track
h5es_id(Attribute) 35
Description(Attribute)Contains parameters derived from the location given by the reference track (or at the same data rate as the reference track data) Segment size is defined by /ancillary_data/segment_sizes/alt_seg_shots.
data_rate(Attribute)Parameters in this group are at the altimetry segment rate (defined in /ancillary_data/segment_sizes/alt_seg_shots).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
delta_time_end
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time End
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Exclusive elapsed time at the end of each (or the) data segment, referenced to granule_gps_epoch.
delta_time_start
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time Start
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Inclusive elapsed time at the start of each (or the) data segment, referenced to granule_gps_epoch.
rt_latitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Reference Track Latitude
(latitude)
degrees_north
Derived (Reference Track)
Latitude of the location on a center-beam, altitude-based reference track used for determining the DEM, geoid, surface_type, and photon/noise windows.
rt_longitude
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Reference Track Longitude
(longitude)
degrees_east
Derived (Reference Track)
Longitude of the location on a center-beam, altitude-based reference track used for determining the DEM, geoid, surface_type, and photon/noise windows.
Group: /reference_track/corrections
h5es_id(Attribute) 61
Description(Attribute)Contains corrections derived from the location on the reference track at the altimetry segment rate. (/ancillary_data/segment_sizes/alt_seg_shots). Ancillary data used in the derivations are found in the group /ancillary_data/photon_range_window.
data_rate(Attribute)Parameters in this group at the altimetry segment rate (defined in /ancillary_data/segment_sizes/alt_seg_shots).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
atm_dd_dh1064
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Atmosphere Delay Ratio 1064
(not_set)
meters
Derived (Atmosphere Delay ATBD)
Ratio of atmosphere delay to height for 1064. Used to compute an additive per-shot atmosphere delay that is applied to 1064 heights after geolocation.
atm_dd_dh532
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Atmosphere Delay Ratio 532
(not_set)
meters
Derived (Atmosphere Delay ATBD)
Ratio of atmosphere delay to height for 532. Used to compute an additive per-shot atmosphere delay that is applied to 532 heights after geolocation.
atm_delay1064
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Atmosphere Delay 1064
(not_set)
meters
Derived (Atmosphere Delay ATBD)
1064 delay due to atmosphere, computed from the platform altitude to the the DEM height. Used to compute an additive per-shot atmosphere delay that is applied to 1064 heights after geolocation.
atm_delay532
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Atmosphere Delay 532
(not_set)
meters
Derived (Atmosphere Delay ATBD)
532 delay due to atmosphere, computed from the platform altitude to the the DEM height. Used to compute an additive per-shot atmosphere delay that is applied to 532 heights after geolocation.
transtime
(Chunked Dataset)
FLOAT
(UNLIMITED)
Transit Time
(not_set)
seconds
Derived (ht_ell/(speed_light/2.0))
Transit time of the laser light to photon bounce. Not applied to heights.
Group: /reference_track/geophysical
h5es_id(Attribute) 38
Description(Attribute)Contains geophysical parameters derived from the location on the reference track at the altimetry segment data rate. Includes MSS (mean sea surface), geoids, suface type, and range windows for each altimetry segment. The duration of an altimetry segment is defined by /ancillary_data/segment_sizes/alt_seg_shots.
data_rate(Attribute)Parameters in this group at the altimetry segment rate (defined in /ancillary_data/segment_sizes/alt_seg_shots).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
ds_surf_type
(Contiguous Dataset)
INTEGER_4
(5)
Dimension scale for surf_type
(not_set)
counts
not_set
Dimension scale for surf_type. Defines the meaning of each surf_type array element.
flag_values: 1, 2, 3, 4, 5
flag_meanings : LAND OCEAN SEA_ICE LAND_ICE INLAND_WATER
egm2008_geoid
(Chunked Dataset)
FLOAT
(UNLIMITED)
egm2008_hgt
(not_set)
meters
EGM2008 ANC File
Interpolated geoid values from the EGM2008 1min grid.
egm96_geoid
(Chunked Dataset)
FLOAT
(UNLIMITED)
egm96_geoid
(not_set)
meters
EGM96 ANC File
Interpolated geoid values from the EGM96 15min grid.
mss_h
(Chunked Dataset)
FLOAT
(UNLIMITED)
mean_sea_surface
(height)
meters
DTU10 ANC File
Mean Sea Surface height. Values interpolated from the 1-min DTU10 MSS (global ocean), referenced to T/P ellipsoid. The value is not adjusted since there are only small differences between the WGS84 and TOPEX ellipsoids ( about 0.71 meters).
noise_window_bot
(Chunked Dataset)
FLOAT
(UNLIMITED)
Bottom of the Noise Window
(not_set)
meters
Derived (dem_h-NOISE_RANGE_BOT_OFF)
Bottom height of the noise window used for noise rate calculation. (ht_dem-NOISE_RANGE_BOT_OFF)
noise_window_top
(Chunked Dataset)
FLOAT
(UNLIMITED)
noise_top_window
(not_set)
meters
Derived (dem_h+NOISE_RANGE_TOP_OFF)
Top height of the noise window used for noise rate calculation. (ht_dem+NOISE_RANGE_TOP_OFF)
photon_window_bot
(Chunked Dataset)
FLOAT
(UNLIMITED)
Photon Window Bottom
(not_set)
meters
Derived (dem_h-DEM_RANGE_BOT_OFF)
Bottom of the height window for altimeter-reported photons. (dem_ht-DEM_RANGE_BOT_OFF)
photon_window_top
(Chunked Dataset)
FLOAT
(UNLIMITED)
Top of the photon window
(not_set)
meters
Derived (h_dem+DEM_RANGE_TOP_OFF)
Top of the height window for altimeter-reported photons. (dem_ht+DEM_RANGE_TOP_OFF)
surf_type
(Chunked Dataset)
INTEGER_4
(5, UNLIMITED)
Surface Type Flag
(not_set)
counts
Derived (ICESat-2 Surface Masks)
The surface type flag indicates the presence of a particular surface type at the coordinates of the reference track (rt_latitude, rt_longitude). Since a particular location may indicate multiple surface types, this flag is an array of 5 values in the order LAND, OCEAN, SEA_ICE, LAND_ICE, INLAND_WATER. 0=surface type not present; 1=surface type present. These values are derived from surface masks provided by the ICESat-2 Project Science Office.
flag_values: 0, 1
flag_meanings : NOT_PRESENT PRESENT
Group: /tof
h5es_id(Attribute) 12
Description(Attribute)Contains Time-of-Flight packet data for each TOF card in use.
data_rate(Attribute)Parameters in this group are at the rate defined in each tof subgroup.
Group: /tof/osc_corr
h5es_id(Attribute) 34
Description(Attribute)Contains oscillator correction data for each TOF card in use.
data_rate(Attribute)Parameters in this group are at the oscillator-correction rate (0.1 hz).
Label
(Layout)
Datatype
(Dimensions)
long_name
(standard_name)
units
source
description
delta_time
(Chunked Dataset)
DOUBLE
(UNLIMITED)
Delta Time
(not_set)
seconds since granule_gps_epoch
Derived (gps_seconds-granule_gps_epoch)
Elapsed seconds since granule_gps_epoch.
osc_corr
(Chunked Dataset)
DOUBLE
(UNLIMITED)
oscillator correction
(not_set)
hertz
Derived: osc_corr=(2.95d8*delta_gps_sow)/(32*delta_PPSTag)
osc_corr is a hardware-dependent frequency-based correction for range. It is derived by computing the deltas of corresponding TOF status gps_sow and PPSTag values and using the equation provided.
osc_flag
(Chunked Dataset)
UINT_1_LE
(UNLIMITED)
oscillator correction flag
(not_set)
counts
Derived: set to 1 if 1.05 < osc_corr > 0.95
The osc_corr flag is use to determine if the corresponding osc_corr is within valid bounds. A non-zero value indicates the corresponding osc_corr should not be used as a range correction
flag_values: 0, 1
flag_meanings : osc_corr_valid osc_corr_not_valid
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