Results for 'Health and sustainability of glaciers in High Mountain Asia'

Summary table updated relative to prior version to provide more useful outputs and units according to the description below.

Contains 1 .csv file including the glacier health metrics used in Miles and others (2021) for all RGI glacier outlines larger than 2km2 in High Mountain Asia (regions 13/14/15). The following attributes are provided in the table:

RGIID: unique identifier from the RGI6.0

VALID: flag to indicate if the data quality of the inputs and results was acceptable (see study Supplementary Material)

CenLat: Latitude of glacier outline centroid from the RGI6.0

CenLon: Longitude of glacier outline centroid from the RGI6.0

meanSMB: Glacier mean mass balance (m w.e./year) derived by this study

ELA: Equilibrium Line Altitude (m a.s.l.) estimated by this study

ELAsig: Uncertainty of ELA based on 1000 Monte Carlo simulations using the derived surface mass balance uncertainty

AAR: Accumulation Area Ration (unitless) estimated by this study

AARsig: Uncertainty of AAR as for ELA

totAbl: Volume of annual ablation, glacier-wide (m3/year)

totAblsig: Uncertainty of total ablation, glacier-wide (m3/year)

balAbl: Volume of 'balance' annual ablation, ie that compensated by net annual accumulation, glacier-wide (m3/year)

balAblsig: Uncertainty of 'balanced' ablation, glacier-wide (m3/year)

imbalAbl: Volume of 'imbalance' annual ablation, glacier-wide (m3/year)

imbalAblsig: Uncertainty of imbalance ablation, glacier-wide (m3/year)

balAblPct: Portion of annual ablation balanced by accumulation (unitless)

balAblPctsig: Uncertainty of balance portion of ablation (unitless)

Vol2100: Simulated glacier volume in the year 2100 under repeated application of current mass balace (m3)

Vol2100sig: Uncertainty in Vol2100 based on current mass balance uncertainty (m3)

PctVol2100: Simulated volume at 2100 expressed as a fraction of volume at 2000 (unitless)

PctVol2100sig: Uncertainty in PctVol2100 based on current mass balance uncertainty (unitless)

Also contains 1 .zip file with principal regridded inputs and results for continuity-derived glacier specific mass balances of High Mountain Asia, 2000-2016. A subdirectory contains the following for each glacier, identified by its Randolph Glacier Inventory identification number (RGIID), all in geotiff format and at the same resolution:

'*_AW3D.tif': regridded digital elevation model based on the ASTER GDEM3 (apologies for misleading name)

'*_debris.tif': binary rasterized debris-cover map based on the results of Scherler et al (2018)

'*_dH.tif': regridded elevation change rate from Brun et al (2017), in m per year

'*_dHe.tif': regridded elevation change rate uncertainty from Brun et al (2017), in m per year

'*_FDIV.tif': raster of flux divergence, in m per year

'*_FDIVe.tif': raster of flux divergence uncertainty, in m per year

'*_Hdensity.tif': raster of estimated density of dH signal, in 1000 kg per m3

'*_SMB.tif': raster of specific mass balance, in m w.e. per year

'*_SMBe.tif': raster of specific mass balance uncertainty, in m w.e. per year

'*_Smean.tif': raster of column-average surface speed based on regridded data from ITS_LIVE (Gardner et al, 2019), in m per year

'*_THX.tif': raster of glacier thickness from consensus estimate of Farinotti et al (2019), in m 

'*_zFDIV.tif': raster of zonally-aggregated flux divergence, in m per year

'*_zFDIVe.tif': raster of zonally-aggregated flux divergence uncertainty, in m per year

'*_zones.tif': raster of elevation-based zonal segmentation for each glacier

'*_zSMB.tif': raster of zonally-aggregated specific mass balance, in m w.e. per year

'*_zSMBe.tif': raster of zonally-aggregated specific mass balance uncertainty, in m w.e. per year