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2021-03-26Zeitschriftenartikel DOI: 10.18452/22662
Atmosphere Driven Mass-Balance Sensitivity of Halji Glacier, Himalayas
dc.contributor.authorArndt, Anselm
dc.contributor.authorScherer, Dieter
dc.contributor.authorSchneider, Christoph
dc.date.accessioned2021-03-31T12:17:56Z
dc.date.available2021-03-31T12:17:56Z
dc.date.issued2021-03-26none
dc.identifier.other10.3390/atmos12040426
dc.identifier.urihttp://edoc.hu-berlin.de/18452/23271
dc.description.abstractThe COupled Snowpack and Ice surface energy and mass balance model in PYthon (COSIPY) was employed to investigate the relationship between the variability and sensitivity of the mass balance record of the Halji glacier, in the Himalayas, north-western Nepal, over a 40 year period since October 1981 to atmospheric drivers. COSIPY was forced with the atmospheric reanalysis dataset ERA5-Land that has been statistically downscaled to the location of an automatic weather station at the Halji glacier. Glacier mass balance simulations with air temperature and precipitation perturbations were executed and teleconnections investigated. For the mass-balance years 1982 to 2019, a mean annual glacier-wide climatic mass balance of −0.48 meters water equivalent per year (m w.e. a−1) with large interannual variability (standard deviation 0.71 m w.e. a−1) was simulated. This variability is dominated by temperature and precipitation patterns. The Halji glacier is mostly sensitive to summer temperature and monsoon-related precipitation perturbations, which is reflected in a strong correlation with albedo. According to the simulations, the climate sensitivity with respect to either positive or negative air temperature and precipitation changes is nonlinear: A mean temperature increase (decrease) of 1 K would result in a change of the glacier-wide climatic mass balance of −1.43 m w.e. a−1 (0.99m w.e. a−1) while a precipitation increase (decrease) of 10% would cause a change of 0.45m w.e. a−1 (−0.59m w.e. a−1). Out of 22 circulation and monsoon indexes, only the Webster and Yang Monsoon index and Polar/Eurasia index provide significant correlations with the glacier-wide climatic mass balance. Based on the strong dependency of the climatic mass balance from summer season conditions, we conclude that the snow–albedo feedback in summer is crucial for the Halji glacier. This finding is also reflected in the correlation of albedo with the Webster and Yang Monsoon index.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectHigh Mountain Asiaeng
dc.subjectHimalayaseng
dc.subjectHalji glaciereng
dc.subjectCOSIPYeng
dc.subjectcryosphereeng
dc.subjectclimatic mass balance variabilityeng
dc.subjectatmospheric forcingeng
dc.subjectseasonal sensitivity characteristicseng
dc.subjectenergy and mass balance modelingeng
dc.subjectatmospheric downscalingeng
dc.subject.ddc550 Geowissenschaftennone
dc.titleAtmosphere Driven Mass-Balance Sensitivity of Halji Glacier, Himalayasnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/23271-4
dc.identifier.doihttp://dx.doi.org/10.18452/22662
dc.type.versionpublishedVersionnone
local.edoc.container-titleAtmospherenone
local.edoc.pages29none
local.edoc.anmerkungThis article was supported by the German Research Foundation (DFG) and the Open Access Publication Fund of Humboldt-Universität zu Berlin.none
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultätnone
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameMDPI AGnone
local.edoc.container-publisher-placeBaselnone
local.edoc.container-volume12none
local.edoc.container-issue4none
dc.description.versionPeer Reviewednone
local.edoc.container-articlenumber426none
dc.identifier.eissn2073-4433

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