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| Titel |
Modeling study on the transport of summer dust and anthropogenic aerosols over the Tibetan Plateau |
| VerfasserIn |
Y. Liu, Y. Sato, R. Jia, Y. Xie, J. Huang, T. Nakajima |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 21 ; Nr. 15, no. 21 (2015-11-11), S.12581-12594 |
| Datensatznummer |
250120157
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| Publikation (Nr.) |
 copernicus.org/acp-15-12581-2015.pdf |
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| Zusammenfassung |
| The Tibetan Plateau (TP) is located at the juncture of several important
natural and anthropogenic aerosol sources. Satellites have observed
substantial dust and anthropogenic aerosols in the atmosphere during summer
over the TP. These aerosols have distinct effects on the earth's energy
balance, microphysical cloud properties, and precipitation rates. To
investigate the transport of summer dust and anthropogenic aerosols over the
TP, we combined the Spectral Radiation-Transport Model for Aerosol Species
(SPRINTARS) with a non-hydrostatic regional model (NHM). The model
simulation shows heavily loaded dust aerosols over the northern slope and
anthropogenic aerosols over the southern slope and the east of the TP.
The dust aerosols are primarily mobilized around the Taklimakan Desert,
where a portion of the aerosols are transported eastward due to the
northwesterly current; simultaneously, a portion of the particles are
transported southward when a second northwesterly current becomes
northeasterly because of the topographic blocking of the northern slope of
the TP. Because of the strong upward current, dust plumes can extend upward
to approximately 7–8 km a.s.l. over the northern slope of the TP. When a
dust event occurs, anthropogenic aerosols that entrained into the
southwesterly current via the Indian summer monsoon are transported from
India to the southern slope of the TP. Simultaneously, a large amount of
anthropogenic aerosol is also transported from eastern China to the east of the
TP by easterly winds. An investigation on the transport of dust and
anthropogenic aerosols over the plateau may provide the basis for
determining aerosol impacts on summer monsoons and climate systems. |
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