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http://dx.doi.org/10.14191/Atmos.2012.22.4.483

Dominant Modes of the East Asian Summer Monsoon Using Equivalent Potential Temperature  

Son, Jun-Hyeok (Division of Earth Environmental System, Department of Atmospheric Sciences, Pusan National University)
Seo, Kyong-Hwan (Division of Earth Environmental System, Department of Atmospheric Sciences, Pusan National University)
Publication Information
Atmosphere / v.22, no.4, 2012 , pp. 483-488 More about this Journal
Abstract
The monsoon front lies on East Asian region, but it gradually propagates to the north during the boreal summer. The equivalent potential temperature (EPT) reveals the thermodynamical features of air masses and monsoon front. Therefore, this study considered the thermodynamical EPT and dynamical wind fields to clarify the peculiarity of East Asian summer monsoon (EASM) variations in June and July, respectively. Western North Pacific subtropical high (WNPSH) and Okhotsk sea high (OSH) both play the crucial role to interannual variations of EASM frontal activity and amount of rainfall. The OSH is important in June, but the WNPSH is key factor in July. Furthermore, the OSH (June) is affected by North Atlantic tripolar sea surface temperature (SST) pattern and WNPSH (July) is influenced by North Indian Ocean SST warming.
Keywords
East Asian summer monsoon; monsoon front; equivalent potential temperature; SST anomalies; Western North Pacific subtropical high;
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Times Cited By KSCI : 1  (Citation Analysis)
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