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

• Main Authors: Miles, Evan, McCarthy, Michael, Dehecq, Amaury, Kneib, Marin, Fugger, Stefan, Pellicciotti, Francesca
• Format: Dataset
• Language: unknown
• Published: Zenodo 2020
• Subjects: Glacier mass balance; High Mountain Asia; committed mass loss; Gardner; Ela; Andreas; Etienne; Ice Sheet; National Snow and Ice Data Center
• Online Access: https://dx.doi.org/10.5281/zenodo.5119153; https://zenodo.org/record/5119153

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 : {"references": ["Scherler, Dirk; Wulf, Hendrik; Gorelick, Noel (2018): Supraglacial Debris Cover. V. 1.0. GFZ Data Services. http://doi.org/10.5880/GFZ.3.3.2018.005", "Brun, Fanny; Berthier, Etienne; Wagnon, Patrick; K\u00e4\u00e4b, Andreas; Treichler, D\u00e9sir\u00e9e (2017): Elevation changes of High Mountain Asia from 2000 to 2016, links to GeoTIFFs. PANGAEA, https://doi.org/10.1594/PANGAEA.876545", "Gardner, A. S., M. A. Fahnestock, and T. A. Scambos, 2019: ITS_LIVE Regional Glacier and Ice Sheet Surface Velocities. Data archived at National Snow and Ice Data Center; doi:10.5067/6II6VW8LLWJ7.", "Farinotti, D., Huss, M., F\u00fcrst, J. J., Landmann, J., Machguth, H., Maussion, F., & Pandit, A. (2019). A consensus estimate for the ice thickness distribution of all glaciers on Earth. Nature Geoscience, 12(March), 1. https://doi.org/10.1038/s41561-019-0300-3"]}