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Data Publisher for Earth & Environmental Science

Brun, Fanny; Berthier, Etienne; Wagnon, Patrick; Kääb, Andreas; Treichler, Désirée (2017): Elevation changes of High Mountain Asia from 2000 to 2016, links to GeoTIFFs. PANGAEA, https://doi.org/10.1594/PANGAEA.876545, Supplement to: Brun, F et al. (2017): A spatially resolved estimate of High Mountain Asia glacier mass balances from 2000 to 2016. Nature Geoscience, 7 pp, https://doi.org/10.1038/ngeo2999

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Abstract:
High Mountain Asia hosts the largest glacier concentration outside the polar regions. These glaciers are important contributors to streamflow in one of the most populated areas of the world. Past studies have used methods that can provide only regionally averaged glacier mass balances to assess the glacier contribution to rivers and sea level rise. Here we compute the mass balance for about 92% of the glacierized area of High Mountain Asia using time series of digital elevation models derived from satellite stereo-imagery. We calculate a total mass change of -16.3 ± 3.5Gt/yr (-0.18 ± 0.04 m w.e./yr) between 2000 and 2016, which is less negative than most previous estimates. Region-wide mass balances vary from -4.0 ± 1.5 Gt/yr (-0.62 ± 0.23 m w.e./yr) in Nyainqentanglha to +1.4 ± 0.8 Gt/yr (+0.14 ± 0.08 m w.e./yr) in Kunlun, with large intra-regional variability of individual glacier mass balances (standard deviation within a region ~0.20 m w.e./yr). Specifically, our results shed light on the Nyainqentanglha and Pamir glacier mass changes, for which contradictory estimates exist in the literature. They provide crucial information for the calibration of the models used for projecting glacier response to climatic change, as these models do not capture the pattern, magnitude and intra-regional variability of glacier changes at present.
Coverage:
Median Latitude: 35.295455 * Median Longitude: 82.106061 * South-bound Latitude: 27.500000 * West-bound Longitude: 69.500000 * North-bound Latitude: 45.500000 * East-bound Longitude: 101.500000
Date/Time Start: 2000-01-01T00:00:00 * Date/Time End: 2016-12-31T00:00:00
Event(s):
ASTER_n27_e086 * Latitude: 27.500000 * Longitude: 86.500000 * Date/Time Start: 2000-01-01T00:00:00 * Date/Time End: 2016-12-31T00:00:00 * Location: High Mountain Asia * Device: Satellite remote sensing (SAT)
ASTER_n27_e087 * Latitude: 27.500000 * Longitude: 87.500000 * Date/Time Start: 2000-01-01T00:00:00 * Date/Time End: 2016-12-31T00:00:00 * Location: High Mountain Asia * Device: Satellite remote sensing (SAT)
ASTER_n27_e088 * Latitude: 27.500000 * Longitude: 88.500000 * Date/Time Start: 2000-01-01T00:00:00 * Date/Time End: 2016-12-31T00:00:00 * Location: High Mountain Asia * Device: Satellite remote sensing (SAT)
Comment:
Links to a set of 30 m resolution maps in GeoTIFF format of elevation changes and uncertainties on trend associated. Each map cover a 1 by 1 degree region of High Mountain Asia. Elevation changes and uncertainties are both in m/yr. The maps of elevation changes were calculated from ASTER DEM time series.
Data are actually under embargo until August 2018. Data contact: Fanny Brun (fanny.brun@univ-grenoble-alpes.fr).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventBrun, Fanny
2DATE/TIMEDate/TimeBrun, FannyGeocode – Begin
3DATE/TIMEDate/TimeBrun, FannyGeocode – End
4File nameFile nameBrun, FannyElevation changes
5File sizeFile sizekByteBrun, FannyElevation changes
6Uniform resource locator/link to fileURL fileBrun, FannyElevation changes, GeoTIFF
7File nameFile nameBrun, FannyUncertainties
8File sizeFile sizekByteBrun, FannyUncertainties
9Uniform resource locator/link to fileURL fileBrun, FannyUncertainties, GeoTIFF
Size:
792 data points

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