Interannual variation in rainfall and atmospheric heat sources over the Tibetan Plateau

Shanshan Zhong; Jinhai He; Zhaoyong Guan; Chunhua Shi

doi:10.1117/12.794008

10 September 2008 Interannual variation in rainfall and atmospheric heat sources over the Tibetan Plateau

Shanshan Zhong, Jinhai He, Zhaoyong Guan, Chunhua Shi

Proceedings Volume 7085, Atmospheric and Environmental Remote Sensing Data Processing and Utilization IV: Readiness for GEOSS II; 70851C (2008) https://doi.org/10.1117/12.794008
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

The Tibetan long-term monthly mean rainfall exhibits a SE to NW decrease, showing strong regionality. The summertime vigorous rainfall centers are roughly coincident with those of heat sources <Q₁> averaged throughout the atmospheric extent, with latent heating making the greatest contribution to <Q₁>. In the heat source stronger (weaker) year than normal, the western Pacific subtropical high amplifies (falls off), making westward extension (eastward withdrawal); the South-Asian high intensifies (weakening), eastward expanding (westward extending); summer monsoon becomes intense (enfeebled). In that case, the precipitation is more (less) in the Jiang-Huai valley compared to normal in relation to the rainfall lower (higher) than mean over the littoral provinces of South China, and two parallel anomalously deep wavetrains (just one wavetrain) of cyclones alternate with anti-cyclones over the Pacific.

Citation Download Citation

Shanshan Zhong, Jinhai He, Zhaoyong Guan, and Chunhua Shi "Interannual variation in rainfall and atmospheric heat sources over the Tibetan Plateau", Proc. SPIE 7085, Atmospheric and Environmental Remote Sensing Data Processing and Utilization IV: Readiness for GEOSS II, 70851C (10 September 2008); https://doi.org/10.1117/12.794008

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