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20 August 2009 Natural variability of East Asian summer monsoon simulated by NCAR Cam3 model
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Abstract
Based on the 100-yr simulations from seasonal cycle global SST and sea ice driven by NCAR Cam3 atmospheric general circulation model, the natural variability of East Asian summer monsoon (EASM) in the internal atmosphere is investigated. Results suggest that the natural variability of EASM in the internal atmosphere displays 1) mainly distinct 3-7-yr interannual period and marked interdecadal variation; 2) in the year of weak EASM, sea level pressure (SLP) in Asian continent increases, with decreased SLP around Japan and in eastern Asian littorals; the 500 hPa height field exhibits negative anomalies over Europe, positive anomalies about the Caspian Sea and negative anomalies around Japan and in the Pacific area to the east, thus leading to an EU-like teleconnection wavetrain and almost v.v. for the year of strong EASM. It is also found that the simulated EASM has a close relation to the EU-like teleconnection wavetrain at 500 hPa on a synchronous basis.
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Gang Zeng, Wei-Chyung Wang, Zhao-bo Sun, and Zhao-hui Lin "Natural variability of East Asian summer monsoon simulated by NCAR Cam3 model", Proc. SPIE 7454, Remote Sensing and Modeling of Ecosystems for Sustainability VI, 74541A (20 August 2009); https://doi.org/10.1117/12.825428
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