Citation:

jog.2019.94

Name: Surface elevation changes of glaciers in the Cordillera Real and Tres Cruces, Bolivia, between 2000 and 2016
Published: 2019-10-08
License: https://creativecommons.org/licenses/by-nc-sa/4.0/
Keywords: DEM; elevation change; geodetic mass balance; SRTM; TanDEM-X; tropical glacier

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Abstract:

During the last decades, climate change has led to a significant shrinkage of glaciers in the Tropical Andes. However, there is a lack of recent multi-temporal quantifications of ice mass loss at mountain range to regional scales. We measure temporally consistent glacier area changes and geodetic mass balances throughout the Bolivian Cordillera Real and Tres Cruces based on multi-sensor remote sensing data in the period 2000-2016. By analyzing interferometric SAR data a geodetic mass balance of -399±98 kg m-2 a-1 and a total ice mass loss of 1.84±0.46 Gt is derived for 2000-2016. In more recent years, ice loss was above the average rate. A mass budget of -467±358 kg m-2 a-1 is found after 2013. These higher change rates can be attributed to the strong El Niño event in 2015/16.

The data set consists of elevation change maps for each subregion (R1, R2, R3; see associated article) for the periods 2000-2013, 2000-2016 and 2013-2016. The glacier outlines used to delineate the glacier areas are available via the Global Land Ice Measurements from Space (GLIMS) database. Each elevation change map is a mosaic of several dh/dt GeoTiff data sets. The product is derived from differencing of TanDEM-X and SRTM Digital Elevation Models. See the associated article for further information regarding the generation of the data sets. Please note: The here provided elevation change maps are unfiltered (i.e. no outliers were removed)

The "date_merge....." data sets provide information on the observation period (measured in years relative to the date of the start of the observation period). Data sets with observation periods starting in 2000: The mean data of the SRTM mission (2000-02-16) is used as the data reference.

Data sets with observation periods starting in 2013: The date of the individual TanDEM-X DEM tiles is used as data reference (date of TanDEM-X tiles in 2013 can be derived from the data sets covering the period 2000-2013; "SRTM mean date" + "date_merge_......2000-2013....")

Keyword(s):

DEM; elevation change; geodetic mass balance; SRTM; TanDEM-X; tropical glacier

Project(s):

Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas (SPP1158)

Funding:

German Research Foundation (DFG), grant/award no. 5472008 : Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas

Coverage:

Latitude: -17.000000 * Longitude: -67.170000

Event(s):

Cordillera_Real * Latitude: -17.000000 * Longitude: -67.170000 * Location: Cordillera Real, South American Altiplano, Bolivia

Comment:

This work was financially supported by the DLR/BMWi grant GEKKO (50EE1544), by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the priority programme "Antarctic Research with comparative investigations in Arctic ice areas" SPP 1158 by the grant DFG BR2105/9-1 and the priority programme “Regional Sea Level Change and Society” by the grant DFG BR2105/14-1, as well as the HGF Aliance Remote Sensing & Earth System Dynamics. The authors would like to thank the German Aerospace Center for providing TanDEM-X and TerraSAR-X data free of charge under AO XTI_GLAC0264 and AO ARC_HYD1763. Landsat data were kindly provided via USGS Earth Explorer and Sentinel-1 data were provided by ESA via Copernicus Open Access Hub. SRTM data were provided by NASA LP DAAC

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator
1	File name	File name		Seehaus, Thorsten
2	File format	File format		Seehaus, Thorsten
3	File size	File size	kByte	Seehaus, Thorsten
4	Uniform resource locator/link to file	URL file		Seehaus, Thorsten

License:

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC-BY-NC-SA-4.0)

Size:

24 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 File name	2 File format	3 File size [kByte]	4 URL file
date_merge_TA-Bo_2000-2013_GI2000.tif	TIF	8583.396	date_merge_TA-Bo_2000-2013_GI2000.tif
date_merge_TA-Bo_2000-2016_GI2000.tif	TIF	6553.426	date_merge_TA-Bo_2000-2016_GI2000.tif
date_merge_TA-Bo_2013-2016_GI2013.tif	TIF	6196.944	date_merge_TA-Bo_2013-2016_GI2013.tif
on_ice_dh_dt_merge_TA-Bo_2000-2013-GI2000.tif	TIF	4832.011	on_ice_dh_dt_merge_TA-Bo_2000-2013-GI2000.tif
on_ice_dh_dt_merge_TA-Bo_2000-2016_GI2000.tif	TIF	4444.956	on_ice_dh_dt_merge_TA-Bo_2000-2016_GI2000.tif
on_ice_dh_dt_merge_TA-Bo_2013-2016_GI2013.tif	TIF	4141.741	on_ice_dh_dt_merge_TA-Bo_2013-2016_GI2013.tif