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| Titel |
Climate regime of Asian glaciers revealed by GAMDAM glacier inventory |
| VerfasserIn |
A. Sakai, T. Nuimura, K. Fujita, S. Takenaka, H. Nagai, D. Lamsal |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 9, no. 3 ; Nr. 9, no. 3 (2015-05-06), S.865-880 |
| Datensatznummer |
250116790
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| Publikation (Nr.) |
 copernicus.org/tc-9-865-2015.pdf |
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| Zusammenfassung |
Among meteorological elements, precipitation has a large spatial variability
and less observation, particularly in high-mountain Asia, although
precipitation in mountains is an important parameter for hydrological
circulation. We estimated precipitation contributing to glacier mass at
the median elevation of glaciers, which is presumed to be at equilibrium-line
altitude (ELA) such that mass balance is zero at that elevation, by tuning
adjustment parameters of precipitation. We also made comparisons between
the median elevation of glaciers, including the effect of drifting snow and
avalanche, and eliminated those local effects. Then, we could obtain the median
elevation of glaciers depending only on climate to estimate glacier surface precipitation.
The calculated precipitation contributing to glacier mass can elucidate that
glaciers in arid high-mountain Asia receive less precipitation, while
much precipitation makes a greater contribution to glacier mass in the Hindu
Kush, the Himalayas, and the Hengduan Shan due to not only direct
precipitation amount but also avalanche nourishment. We classified glaciers
in high-mountain Asia into summer-accumulation type and winter-accumulation
type using the summer-accumulation ratio and confirmed that
summer-accumulation-type glaciers have a higher sensitivity than
winter-accumulation-type glaciers. |
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