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Proceedings Paper

Moisture structure of ISO in Western North Pacific revealed by AIRS
Author(s): Li Tao; Xiouhua Fu; Bin Wang
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Paper Abstract

By using the humidity from AIRS data set, rainfall from TRMM GPI and wind from QSCAT wind as well as SST from Aqua/AMSR_E, We analyze the structure of summer intraseasonal oscillation (ISO) over western Pacific region in 2004. We find the signal of 20-90d oscillation in western Pacific originated from equatorial India ocean, which propagate eastward to Philippine sea, then propagate northwestward to south of China. The AIRS humidity data shows that the boundary layer moisture lead the mid-troposphere moisture during the ISO propagation. The positive SST anomaly may play an important role to moistening the boundary layer and induces the ISO propagation. Therefore, the intraseasonal SST anomaly could positively feed back to the atmosphere through moistening the boundary layer, destabilizing the troposphere, and contributing to the northwestward propagation of the ISO in western North Pacific. The character that the boundary moisture anomaly leads mid-troposphere moisture above ABL is not revealed by miosture depicted in ECMWF.

Paper Details

Date Published: 24 September 2007
PDF: 8 pages
Proc. SPIE 6684, Atmospheric and Environmental Remote Sensing Data Processing and Utilization III: Readiness for GEOSS, 66840T (24 September 2007); doi: 10.1117/12.729294
Show Author Affiliations
Li Tao, Nanjing Univ. of Information Sciences and Technology (China)
Xiouhua Fu, Univ. of Hawaii at Manoa (United States)
Bin Wang, Univ. of Hawaii at Manoa (United States)

Published in SPIE Proceedings Vol. 6684:
Atmospheric and Environmental Remote Sensing Data Processing and Utilization III: Readiness for GEOSS
Mitchell D. Goldberg; Hal J. Bloom; Allen H.-L. Huang; Philip E. Ardanuy, Editor(s)

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