Dataset Open Access

Supplementary data: Impact of a global temperature rise of 1.5 degrees Celsius on Asia's glaciers

Kraaijenbrink, P. D.A.; Bierkens, M.F.P.; Lutz, A.F.; Immerzeel, W.W.

Supplementary data to Kraaijenbrink, Bierkens, Lutz and Immerzeel, 2017. Impact of a global temperature rise of 1.5 degrees Celsius on Asia’s glaciers, Nature. Model code can be found here.

Please note that all data is provided in 7z-archives. To extract the data use the open source software 7zip.

 

Model input: Raster data

The raster data that is required to run the model is available for the entire High Mountain Asia (complete-hma.7z) and for each RGI v5.0 sub-region (<region-name>.7z). The 7z-archives hold separate folders for each glacier, which are named by RGI glacier ID. The rasters for each glacier are in GeoTIFF format, have a 30 m resolution, are in local UTM projection (WGS84 datum), and are clipped to the RGI glacier extent.

Rasters present for each glacier are:

classification.tif         The debris classification made in google earth engine.
debris-thickness-50cm.tif  Debris thickness estimation based on Landsat 8 surface temperature.
ice-thickness.tif          Ice thickness determined using the Glabtop2 model
ls8-composite-b456.tif     Landsat 8 warmest-pixel optical composite (bands RED, NIR, SWIR1)
ls8-composite-tsurf.tif    Landsat 8 warmest-pixel surface temperature composite
srtm-elevation.tif         SRTM 1 arc second elevation data
srtm-slope.tif             Slope of the SRTM 1 arc second data

 

Model input: RDS data

The general model input data (mbg-model-rds-data.7z) is stored in R’s binary RDS format and R is required to open and read the data.

Files present in the 7z-archive are:

dP_factors_2006-2100.rds   Precipitation changes (delta factors) up to 2100
dT_degrees_2006-2100.rds   Temperature changes (Kelvin) up to 2100
glacier-data.rds           Glacier centroids with current climate and mass balance input
ostrem_meancurve.rds       The Östrem curve used by the model
rgi-subregions.rds         RGI sub-region polygons for Asia

 

Output data

Region-aggregated output is available in ESRI Shapefile format for the RGI sub-regions, major river basins, and for a 1×1 degree grid (output-shapefiles.7z). The attribute tables of all shapefiles hold data on the occurrence of debris as well as current glacier area and volume, and volume projections for the end of century.

The available shapefile attributes are:

count		number of glaciers
a_total		total glacier area (m2)
a_debris  	glacier area covered by debris (m2)
a_ela     	glacier area below modelled ELA (m2)
a_ela_deb 	glacier area below modelled ELA covered by debris (m2)
v_total   	total glacier volume (m3)
v_debris  	glacier volume covered by debris (m3)
v_ela     	glacier volume below modelled ELA (m3)
v_ela_deb 	glacier volume below modelled ELA covered by debris (m3)
m_total_gt	total glacier mass (gigaton)
volST_EOC 	volume remaining in end of century under a stable current temperature
vol15_EOC 	volume remaining in end of century under 1.5 degree scenario
vol26_EOC 	volume remaining in end of century for the RCP2.6 model ensemble
vol45_EOC 	volume remaining in end of century for the RCP4.5 model ensemble
vol60_EOC 	volume remaining in end of century for the RCP6.0 model ensemble
vol85_EOC	volume remaining in end of century for the RCP8.5 model ensemble
Files (8.2 GB)
Name Size
central-himalaya.7z
md5:f934b0acd535a1837780d42b7e553d3c
227.1 MB Download
complete-hma.7z
md5:a3d4e2ef37308b90e60e7eb64bd8c327
3.9 GB Download
east-himalaya.7z
md5:760d5b8f4ca8dccf950cd5abc6fef460
201.0 MB Download
east-kun-lun.7z
md5:643b0a4dda36182f9b5163b98e0f0ca2
123.4 MB Download
east-tien-shan.7z
md5:d47be1689150fb183f7cf24b4bf32fa4
101.6 MB Download
hengduan-shan.7z
md5:8846e4fff637ee24749353d9441a8974
171.4 MB Download
hindu-kush.7z
md5:0227ac0764c1a0441ef3de9832e739ec
111.5 MB Download
hissar-alay.7z
md5:aba46772099f37931a15794e363f665e
67.0 MB Download
inner-tibet.7z
md5:ae8fb3659bd26bac841127162d9fed3f
298.2 MB Download
karakoram.7z
md5:dee12483faa7dd90aaca0765254357d7
950.3 MB Download
mbg-model-rds-data.7z
md5:0f315e558d2458cacba16420155f910b
467.0 MB Download
output-shapefiles.7z
md5:48409316198a84e3eaf468e2deb37c09
1.4 MB Download
pamir.7z
md5:596d7f2937bbd24fc3fa2c19da40bd1d
405.6 MB Download
qilian-shan.7z
md5:74d020182d4d12b91b1d69b96082d6de
58.8 MB Download
south-and-east-tibet.7z
md5:9e2b0817cb491f9cb57a83ebd8e9e423
148.7 MB Download
west-himalaya.7z
md5:e9e1a929ae9842f4b3f083220200883d
303.8 MB Download
west-kun-lun.7z
md5:cb793b56563f44f59d6bf1c868d1351f
322.7 MB Download
west-tien-shan.7z
md5:075a17a4ebf2f462f346e79476effe4c
372.3 MB Download
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