Kappelsberger, Maria T; Helm, Veit; Nilsson, Johan; Horwath, Martin; Gardner, Alex S: Satellite altimetry results over Lake Vostok, central East Antarctica, from CryoSat-2 (Nov 2010 - Feb 2024) and ICESat-2 (Apr 2019 - Apr 2024) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.973958 (dataset in review)
Abstract:
This dataset contains satellite altimetry results over Lake Vostok, central East Antarctica, at two different processing stages: (1) surface elevation measurements along the satellite track and (2) monthly gridded surface elevation changes. Results from the CryoSat-2 satellite radar altimetry mission from November 2010 to February 2024 are provided at both processing stages and for the two waveform retrackers AWI-ICENet1 (based on a deep convolutional neural network architecture) and OCOG10 (10% of the offset center of gravity (OCOG) amplitude). The generation of the stage (2) gridded data from the stage (1) OCOG10-retracked measurements involve an empirical correction for the effect of time-variable surface and volume scattering. Hence, the resulting stage (2) dataset is labeled OCOG10-cor. For this empirical correction, we apply a tailored scattering correction using epoch differences over time intervals of 6 years and search radii of 5 km. The results from the ICESat-2 satellite laser altimetry mission from April 2019 to April 2024 are provided only at the processing stage (2). As input to our processing, we use the CryoSat-2 Level-1B waveform product Baseline E provided by ESA and the ICESat-2 ATL06.006 land ice height product (version 6) provided by NASA National Snow and Ice Data Center.
Keyword(s):
Supplement to:
Kappelsberger, Maria T; Nilsson, Johan; Horwath, Martin; Gardner, Alex S; Helm, Veit (in prep.): A recent increase in ice-surface elevation over Lake Vostok, central East Antarctica, observed by ICESat-2 and CryoSat-2. https://doi.org/10.2139/ssrn.5021827
Related to:
Helm, Veit; Dehghanpour, Alireza; Hänsch, Ronny; Loebel, Erik; Horwath, Martin; Humbert, Angelika (2024): AWI-ICENet1: a convolutional neural network retracker for ice altimetry. The Cryosphere, 18(9), 3933-3970, https://doi.org/10.5194/tc-18-3933-2024
Nilsson, Johan; Gardner, Alex S; Paolo, Fernando S (2022): Elevation change of the Antarctic Ice Sheet: 1985 to 2020. Earth System Science Data, 14(8), 3573-3598, https://doi.org/10.5194/essd-14-3573-2022
Schröder, Ludwig; Horwath, Martin; Dietrich, Reinhard; Helm, Veit; van den Broeke, Michiel R; Ligtenberg, Stefan R M (2019): Four decades of Antarctic surface elevation changes from multi-mission satellite altimetry. The Cryosphere, 13(2), 427-449, https://doi.org/10.5194/tc-13-427-2019
Further details:
Kappelsberger, Maria T; Helm, Veit; Nilsson, Johan; Horwath, Martin; Gardner, Alex S: Quicklooks of satellite altimetry results over Lake Vostok, central East Antarctica, from CryoSat-2 (Nov 2010 - Feb 2024) and ICESat-2 (Apr 2019 - Apr 2024) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.973961
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 442929109: Advancing ice altimetry analysis to constrain the Antarctic Ice Sheet's response to climate change
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: -77.386850 * Median Longitude: 105.440500 * South-bound Latitude: -79.288500 * West-bound Longitude: 99.340000 * North-bound Latitude: -75.485200 * East-bound Longitude: 111.541000
Date/Time Start: 2010-11-01T00:00:00 * Date/Time End: 2024-04-30T00:00:00
Event(s):
Comment:
We provide georeferenced netcdf files with the following naming conventions: region_mission_retracker_start_end_parameter.nc
retracker is used only for the CryoSat-2 results. parameter refers to the main stored parameter, which is either elev or sec. The former, elev, refers to surface elevation measurements along the satellite track, processing stage (1), given at the echo location in geodetic longitude and latitude (EPSG:4326). The latter, sec, refers to monthly gridded surface elevation changes, processing stage (2), given for a projected grid of 2 km x 2 km (EPSG:3031). The netcdf files are self-explanatory.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Kappelsberger, Maria T | Geocode – start | ||
| 2 | DATE/TIME | Date/Time | Kappelsberger, Maria T | Geocode – end | ||
| 3 | File content | Content | Kappelsberger, Maria T | |||
| 4 | netCDF file | netCDF | Kappelsberger, Maria T | |||
| 5 | netCDF file (File Size) | netCDF (Size) | Bytes | Kappelsberger, Maria T |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
10 data points
Download Data (login required; moratorium until 2026-12-18)
Datasets with similar metadata
- Kappelsberger, MT; Helm, V; Nilsson, J et al. (in review): Quicklooks of satellite altimetry results over Lake Vostok, central East Antarctica, from CryoSat-2 (Nov 2010 - Feb 2024) and ICESat-2 (Apr 2019 - Apr 2024). https://doi.pangaea.de/10.1594/PANGAEA.973961
- Helm, V (2024): Convolutional neural network training dataset and results of AWI-ICENet1 retracker. https://doi.org/10.1594/PANGAEA.964596
- Schröder, L; Richter, A; Fedorov, D et al. (2016): Kinematic GNSS profiles in central East Antarctica. https://doi.org/10.1594/PANGAEA.869761