Here are the ATBDs associated with Release 004 data products.

 

ATL00 Telemetry Data Raw ATLAS telemetry in packet format
ATL01 Reformatted Telemetry

Parsed, partially reformatted into HDF5, generated daily, segmented into several minute granules.

https://doi.org/10.5067/MU4XJW89ZPQ5

ATL02 Science Unit Converted Telemetry

Photon time of flight, corrected for instrument effects. Includes all photons, pointing data, spacecraft position, housekeeping data, engineering data, and raw atmospheric profiles, segmented into several minute granules.

https://doi.org/10.5067/D5VV1RJQ0VTN

POD Precise Orbit Determination, Orbit Design & Geolocation Calibration

Precise orbit determination modeling and implementation, orbit tuning and reference ground track parameters, POD/PPD calibration and validation.

https://doi.org/10.5067/BRUS0WXIZ51T

PPD Precision Pointing Determination

Arcsecond-level knowledge of laser pointing direction for each laser pulse; combined with POD and range measurements to eild the geolocation of laser spots on the surface of the Earth to an accuracy of 6.5 meters.

https://doi.org/10.5067/KLGO9GZK40CB

ATL03A Atmospheric Delay Corrections

Correcting the laser footprint altitude as a result of atmopsheric path delay, refraction, and other atmospheric properties.

https://doi.org/10.5067/JA1FZNKH4QSJ

ATL03G Received Photon Geolocation

General overview of steps/procedures required to provide geolocated heights for each ATLAS photon event, as well as a detailed geolocation algorithm implementation and processing flow specifically designed for the ICESat-2 mission.

https://doi.org/10.5067/QN0KOSRLV45J

ATL03 Global Geolocated Photon Data

Precise latitude, longitude and elevation for every received photon, arranged by beam in the along-track direction. Photons classified by signal vs. background, as well as by surface type (land ice, sea ice, land, ocean), including all geophysical corrections (e.g. Earth tides, atmospheric delay, etc…). Segmented into several minute granules.

https://doi.org/10.5067/8668K8I6EPVE

ATL04

Uncalibrated Backscatter Profiles

Along-track atmospheric backscatter data, 25 times per second. Includes calibration coefficients for polar regions. Segmented into several minute granules.

https://doi.org/10.5067/VZIDW16UA4S1

ATL06

Land Ice Elevation

Surface height for each beam with along- and across-track slopes calculated for each beam pair. Posted at 40m along-track; segmented into several minute granules.

https://doi.org/10.5067/TY5QAMS5L65D

ATL07 Arctic/Antarctic Sea Ice Elevation

Height of sea ice and open water leads at varying length scale based on returned photon rate for each beam presented along-track

https://doi.org/10.5067/BHFDVX8Q6FKW

ATL08 Land Water Vegetation Elevation

Height of ground including canopy surface posted at variable length scales relative to signal level, for each beam presented along-track. Where data permits include canopy height, canopy cover percentage, surface slope and roughness, and apparent reflectance.

https://doi.org/10.5067/ATJ2993XY4MI

ATL09

Calibrated Backscatter and Cloud Characteristics

Along-track cloud and other significant atmosphere layer heights, blowing snow, integrated backscatter, and optical depth.

https://doi.org/10.5067/VZIDW16UA4S1

ATL09 Layer Parameters

ATL09, Pt. II -- DDA Density-Dimension Algorithm for Atmospheric Layers & Surface

Detection of clouds and other atmospheric layers, such as blowing snow and aerosols, and their boundaries in ATLAS data.

https://doi.org/10.5067/JT3IX3YFW1RR

ATL10

Arctic/Antarctic Sea Ice Freeboard

Estimate of sea ice freeboard over specific spatial scales using all available sea surface height measurements. Contains statistics of sea surface and sea ice heights.

https://doi.org/10.5067/UAZPI91070H4

ATL11

Antarctica / Greenland Ice Sheet H(t) Series

Time series of height at points on the ice sheet, calculated based on repeat tracks and/or cross-overs.

https://doi.org/10.5067/WQ1QKT7XC4FC

ATL12

Ocean Elevation

Surface height at specific length scale. Where data permits include estimates of height distribution, roughness, surface slope, and apparent reflectance.

https://doi.org/10.5067/R5WRJUFF3RD3

ATL13

Inland Water Height

Along-track inland and near shore water surface height distribution within water mask.  Where data permit, include roughness, slope and aspect

https://doi.org/10.5067/L870NVUK02YA

ATL14

Antarctica / Greenland Ice Sheet H(t) Gridded

Height maps of each ice sheet for each year based on all available elevation data.

ATL15

Antarctica / Greenland Ice Sheet dh/dt Gridded

Height change maps for each ice sheet, for each mission year, and for the whole mission.

ATL16

ATLAS Atmosphere Weekly

Polar cloud fraction, blowing snow frequency, ground detection frequency.

https://doi.org/10.5067/FHT4Z2S1FRVD

ATL17

ATLAS Atmosphere Monthly

Polar cloud fraction, blowing snow frequency, ground detection frequency.

https://doi.org/10.5067/FHT4Z2S1FRVD

ATL18

Land/Canopy Gridded

Gridded ground surface height, canopy height, and canopy cover estimates.

ATL19

Mean Sea Surface (MSS)

Gridded ocean height product.

ATL20

Arctic / Antarctic Gridded Sea Ice Freeboard

Gridded sea ice freeboard.

https://doi.org/10.5067/BHFDVX8Q6FKW

ATL21

Arctic/Antarctic Gridded Sea Surface Height w/in Sea Ice

Gridded monthly sea surface height inside the sea ice cover.

https://doi.org/10.5067/BHFDVX8Q6FKW

 

 

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