Abstract:
Digital Elevation Model (DEM) of the Antarctic Ice Sheet derived from Global Navigation Satellite Systems-Reflectometry (GNSS-R) data from the UK TechDemoSat-1 satellite. This is obtained using all available data from the mission (32 months). It has a median bias under 18 metres and Root Mean Square Difference under 91 metres when compared to the CryoSat-2 1 km v1.0 DEM (Slater et al., 2017).
This work was supported by the Natural Environmental Research Council [grant number NE/L002531/1].
***** PLEASE BE ADVISED TO USE VERSION 2.0 DATA *****
The VERSION 2.0 data set (see 'Related Data Set Metadata' link below) uses improved processing and an additional 13 months of measurements.
Keywords:
Altimetry, Antarctic Ice Sheet, DEM, GNSS-R, TechDemoSat-1
Cartwright, J. (2018). Independent Digital Elevation Model of Antarctica from GNSS-R data from TechDemoSat-1 - VERSION 1.0 (Version 1.0) [Data set]. Polar Data Centre, Natural Environment Research Council, UK Research & Innovation, UK. https://doi.org/10.5285/2ef1c932-1fd2-4593-a793-f37815ab6f82
| Access Constraints: | No restrictions apply. |
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| Use Constraints: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
| Creation Date: | 2018-05-16 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | J Cartwright |
| Role(s) | Investigator, Technical Contact |
| Organisation | University of Southampton |
| Name | M P Clarizia |
| Role(s) | Investigator |
| Organisation | University of Southampton |
| Name | P Cipollini |
| Role(s) | Investigator |
| Organisation | National Oceanography Centre |
| Name | C J Banks |
| Role(s) | Investigator |
| Organisation | National Oceanography Centre |
| Name | M Srokosz |
| Role(s) | Investigator |
| Organisation | National Oceanography Centre |
| Parent Dataset: | N/A |
| Reference: | Cartwright, J., Clarizia, M. P., Cipollini, P., Banks, C. J., Srokosz, M. (submitted for publication) Independent DEM of Antarctica using GNSS-R data from TechDemoSat-1, Geophysical Research Letters. Slater, T., A. Shepherd, M. McMillan, A. Muir, L. Gilbert, A. E. Hogg, H. Konrad, and T. Parrinello (2017), A new Digital Elevation Model of Antarctica derived from CryoSat-2 altimetry, The Cryosphere Discussions, (October), 1-26. |
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| Quality: | Median bias under 18 metres and Root Mean Square Difference under 91 metres when compared to the CryoSat-2 1 km v1.0 Digital Elevation Model (Slater et al, 2017). 'NaN' denotes no data available. | |
| Lineage: | See Cartwright et al. (2018) for further information. | |
| Temporal Coverage: | |
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| Start Date | 2014-11-01 |
| End Date | 2017-07-01 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -90 |
| Northernmost | -60 |
| Longitude | |
| Westernmost | -180 |
| Easternmost | 180 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Data Resolution: | |
| Latitude Resolution | N/A |
| Longitude Resolution | N/A |
| Horizontal Resolution Range | 50 km - < 100 km or approximately .5 degree - < 1 degree |
| Vertical Resolution | N/A |
| Vertical Resolution Range | N/A |
| Temporal Resolution | N/A |
| Temporal Resolution Range | N/A |
| Location: | |
| Location | Antarctica |
| Detailed Location | N/A |
| Data Collection: | Instrumentation: SGR-ReSI, TechDemoSat-1 |
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| Data Storage: | The dataset is approximately 450 kB and is in NetCDF 4 classic format. |
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