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| Titel |
Airborne dust distributions over the Tibetan Plateau and surrounding areas derived from the first year of CALIPSO lidar observations |
| VerfasserIn |
Z. Liu, D. Liu, J. Huang, M. Vaughan, I. Uno, N. Sugimoto, C. Kittaka, C. Trepte, Z. Wang, C. Hostetler, D. Winker |
| 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 ; 8, no. 16 ; Nr. 8, no. 16 (2008-08-29), S.5045-5060 |
| Datensatznummer |
250006350
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| Publikation (Nr.) |
 copernicus.org/acp-8-5045-2008.pdf |
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| Zusammenfassung |
| Using an analysis of the first full year of CALIPSO lidar measurements, this
paper derives unprecedented, altitude-resolved seasonal distributions of
desert dust transported over the Tibetan Plateau (TP) and the surrounding
areas. The CALIPSO lidar observations include numerous large dust plumes
over the northern slope and eastern part of the TP, with the largest number
of dust events occurring in the spring of 2007, and some layers being lofted
to altitudes of 11–12 km. Generation of the Tibetan airborne dusts appears
to be largely associated with source regions to the north and on the eastern
part of the plateau. Examination of the CALIPSO time history reveals an
"airborne dust corridor" due to the eastward transport of dusts
originating primarily in these source areas. This corridor extends from west
to east and shows a seasonality largely modulated by the TP through its
dynamical and thermal forcing on the atmospheric flows. On the southern
side, desert dust particles originate predominately in Northwest India and
Pakistan. The dust transport occurs primarily in dry seasons around the TP
western and southern slopes and dust particles become mixed with local
polluted aerosols. No significant amount of dust appears to be transported
over the Himalayas. Extensive forward trajectory simulations are also
conducted to confirm the dust transport pattern from the nearby sources
observed by the CALIPSO lidar. Comparisons with the OMI and MODIS
measurements show the unique capability of the CALIPSO lidar to provide
unambiguous, altitude-resolved dust measurements. |
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