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| Titel |
A 12-year high-resolution climatology of atmospheric water transport over the Tibetan Plateau |
| VerfasserIn |
J. Curio, F. Maussion, D. Scherer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2190-4979
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| Digitales Dokument |
URL |
| Erschienen |
In: Earth System Dynamics ; 6, no. 1 ; Nr. 6, no. 1 (2015-03-13), S.109-124 |
| Datensatznummer |
250115415
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| Publikation (Nr.) |
 copernicus.org/esd-6-109-2015.pdf |
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| Zusammenfassung |
| The Tibetan Plateau (TP) plays a key role in the water cycle of high
Asia
and its downstream regions. The respective influence of the Indian and East
Asian summer monsoon on TP precipitation and regional water resources,
together with the detection of moisture transport pathways and source
regions are the subject of recent research. In this study, we present a
12-year high-resolution climatology of the atmospheric water transport
(AWT) over and towards the TP using a new data set, the High Asia Refined
analysis (HAR), which better represents the complex topography of the TP and
surrounding high mountain ranges than coarse-resolution data sets. We focus
on spatiotemporal patterns, vertical distribution and transport through the
TP boundaries. The results show that the mid-latitude westerlies have a
higher share in summertime AWT over the TP than assumed so far. Water vapour
(WV) transport constitutes the main part, whereby transport of water as
cloud particles (CP) also plays a role in winter in the Karakoram and western
Himalayan regions. High mountain valleys in the Himalayas facilitate AWT
from the south, whereas the high mountain regions inhibit AWT to a large
extent and limit the influence of the Indian summer monsoon. No transport
from the East Asian monsoon to the TP could be detected. Our results show
that 36.8 ± 6.3% of the atmospheric moisture needed for
precipitation comes from outside the TP, while the remaining 63.2% is
provided by local moisture recycling. |
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