NASA's Land, Vegetation, and Ice Sensor or "LVIS", is an airborne, wide-swath imaging laser altimeter system that is flown over target areas to collect data on surface topography and 3-D structure. Utilizing a system that includes a 1064 nm-wavelength laser and 3 detectors, the entire time history of the outgoing and return pulses is digitized, allowing unambiguous determination of range and return pulse structure. Combined with aircraft position and attitude knowledge, the sensor produces topographic maps with decimeter accuracy and vertical height and structure measurements of overflown terrain.
These data are from the ICESat-2 summer sea ice campaign operating on NASA's G-V aircraft from July 11-26, 2022 out of Thule, Greenland. The Level 1B data provide the geolocated waveforms and the Level 2 data provide the elevation and height products. To facilitate easier data downloads from this site, Level 1B files are grouped by date and further bundled into 30 HDF5 files per tar.gz file. All Level 2 files have been combined into a single tar.gz file. These data are being hosted temporarily on this site until hosting can be transferred to a permanent location at NSIDC in the coming months.
For more information and data references please see: https://lvis.gsfc.nasa.gov/Home/index.html.
LVIS Level 1B (LVISF1B)
07-11-22
LVISF1B_GL2022_0711_R2211_044776-048598.tar.gz
LVISF1B_GL2022_0711_R2211_048694-056867.tar.gz
LVISF1B_GL2022_0711_R2211_057435-062945.tar.gz
LVISF1B_GL2022_0711_R2211_063040-065913.tar.gz
07-12-22
LVISF1B_GL2022_0712_R2211_045275-053531.tar.gz
LVISF1B_GL2022_0712_R2211_053629-063771.tar.gz
LVISF1B_GL2022_0712_R2211_063866-065147.tar.gz
07-19-22
LVISF1B_GL2022_0719_R2211_043420-049340.tar.gz
LVISF1B_GL2022_0719_R2211_049436-058784.tar.gz
LVISF1B_GL2022_0719_R2211_058879-061855.tar.gz
07-21-22
LVISF1B_GL2022_0721_R2211_044142-057433.tar.gz
07-23-22
LVISF1B_GL2022_0723_R2211_044112-053839.tar.gz
07-26-22
LVISF1B_GL2022_0726_R2211_055929-061222.tar.gz
LVISF1B_GL2022_0726_R2211_061586-068749.tar.gz
LVISF1B_GL2022_0726_R2211_068845-073348.tar.gz
LVIS Level 2 (LVISF2is)
LVISF2is_GL2022_0711-0726_R2212.tar.gz
LVIS Level 2 (LVISF2is) Geophysical Corrections
The ICESat-2 PSO has generated near-equivalent ATL07 geophysical corrections for LVIS Level 2 at individual shot resolution. These data files contain the individual LVIS elevation retrievals with new corrected heights using both the methods for rel005 and rel006 ATL07 data products, the rel005 corrected heights use the static IB correction whereas the rel006 corrected heights use the new dynamic IB correction. The aim of this product is to allow better comparisons to ICESat-2 data products which account for time separation between the aircraft and satellite measurements.
Tide corrections are taken from Tyler Sutterley's pyTMD software (https://github.com/tsutterley/pyTMD), comparisons of the output from this software show agreement to output from ICESat-2 data products to better than 0.1 mm. Note that an independent solid earth tide correction is nominally applied to the LVIS data during their data processing so this value is not provided here. The mean sea surface (MSS) model is equivalent to that applied by ICESat-2 data products and comparisons with the software output also showed agreement to better than 0.1 mm. The rel005 static IB correction uses the same atmospheric pressure inputs and comparisons with ICESat-2 data products and show agreement to about 0.2 mm or better. The rel006 dynamic IB correction shows the worst agreement with ICESat-2 products with differences of 0.5 to 1 cm present. Corrections are provided for individual LVIS points that are both near ICESat-2 lines, are over ocean/sea ice and have valid values.