Impact of Indian summer monsoon on the South Asian High and its influence on summer rainfall over China

Wei, Wei; Zhang, Renhe; Wen, Min; Rong, Ximin; Li, Tim

doi:10.1007/s00382-013-1938-y

Cited by 191 publications

(198 citation statements)

References 21 publications

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“…This model was widely used by previous studies in East Asia-West Pacific region (e.g. Wang et al, 2012;Wei et al, 2014Wei et al, , 2015Leung et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

The relation of cross‐equatorial flow during winter and spring with South China Sea summer monsoon onset

Lin

Zhang

2017

Intl Journal of Climatology

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ABSTRACT:The relationship between cross-equatorial flow (CEF) during winter and spring and the South China Sea summer monsoon (SCSSM) onset is investigated by data diagnoses for the period of 1979-2013 and numerical experiments. The SCSSM onset is found to have a significant negative correlation with the CEF nearby the Philippines in preceding January, February and March prior to SCSSM onset. A strong CEF during January, February and March tends to be succeeded by an early onset of SCSSM, whereas a weak CEF is likely to be followed by a late onset. The CEF in preceding months links with the SCSSM onset through the subtropical high over South China Sea and western North Pacific in April. The subtropical high in April is weak and eastward shifted (strong and westward shifted) when the CEF in preceding months is strong (weak). The weak and eastward shifted (strong and westward shifted) subtropical high favours (does not favour) the convection developing (depressing) over South China Sea, resulting in an early (late) onset of SCSSM. The anomalies of CEF nearby the Philippines in preceding months and its close relationship with subsequent subtropical high are caused by the sea surface temperature anomalies (SSTA) and atmospheric heating source over tropical western Pacific. The difference of SSTA between south and north of equator in tropical western Pacific and the corresponding atmospheric diabatic heating result in the anomalies of CEF in January, February and March, and impact the activity of subtropical high in April. The positive SSTA in tropical western Pacific, combining with the wet and warm climatic background over northern South China Sea and coastal areas of Southern China in April are favourable for a cyclonic circulation anomaly occurring over northern South China Sea. As a result, the subtropical high is weak and eastward shifted, and the SCSSM onset is early.

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“…This model was widely used by previous studies in East Asia-West Pacific region (e.g. Wang et al, 2012;Wei et al, 2014Wei et al, , 2015Leung et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

The relation of cross‐equatorial flow during winter and spring with South China Sea summer monsoon onset

Lin

Zhang

2017

Intl Journal of Climatology

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“…Zhang (1999Zhang ( , 2001 claimed that the impact of the SAM on the rainfall over North China is through the transportation of water vapor from the Indian region. The Key mechanisms on the connection proposed are (1) the east-west shift of the South Asian High (SAH) (Tao and Zhu 1964;Wei et al 2014), (2) modulation by the WNPSM (Cao et al 2012;Chowdary et al 2013;Bandgar et al 2014), and (3) a mid-latitude circulation pattern over the Asian continent (Krishnan and Sugi 2001;Wu 2002;Wu et al 2003;Greatbatch et al 2013). The SAM tends to affect the EAM via the east-west shift of the SAH exhibiting the tripolar pattern of the summer rainfall anomalies over China (Wei et al 2014).…”

Section: Interannual To Interdecadal Linkages: a Reviewmentioning

confidence: 99%

“…Many studies have been performed to ascertain linkages among the Asian monsoon subcomponents and distinct features of each subcomponent (e.g., Flohn 1958Flohn , 1960Gao 1992;Kulkarni 1997, 2001;Lau and Wu 2001;Dai et al 2002;Wang et al 2003;Greatbatch et al 2013;Lee et al 2013aLee et al , b, 2017Wei et al 2014;Chu et al 2017). Because the regional monsoons are modulated by diverse external forcings and internal dynamics, SAM and EAM are significantly correlated at certain times but tend to vary independently at other times (Kripalani and Kulkarni 2001;Wu 2002;Wu and Wang 2002).…”

mentioning

confidence: 99%

Linkages between the South and East Asian summer monsoons: a review and revisit

Seo

Lee

et al. 2017

Clim Dyn

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with decaying El Niño and developing Indian Ocean sea surface temperature (SST) warming anomalies; the other is the negative inter-correlation, resulting from developing El Niño and western Pacific SST cooling. The IODM mode also has a delayed impact on the negative connection by modulating Eurasian snow cover. The observed evidence reveals that the recent intensification of the negative relationship is attributable to the strengthening of the zonal SST gradient along the Indian Ocean, western Pacific, and eastern Pacific. Analysis of experiments in the fifth phase of the Coupled Model Intercomparison Project further indicates a possibility for the negative linkage to be further enhanced under anthropogenic global warming with considerable interdecadal modulation in mid and late twentyfirst century.

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“…Previous studies have confirmed that the formation and variation of summertime subtropical highs are mainly determined by the spatial distribution and variations of diabatic heating (Rodwell and Hoskins 2001;Wu and Liu 2003;Miyasaka and Nakamura 2005;Wei et al 2014Wei et al , 2015Wei et al , 2017. We use the apparent heat source Q 1 to analyze the diabatic heating anomaly associated with the MBL clouds over the North Atlantic.…”

Section: Methodsmentioning

confidence: 96%

“…The subtropical circulation response to the heating will be examined, and the Newtonian cooling rate of 1 K day −1 is applied for the region beyond 50°N and 50°S. The model has been successfully applied to study the effect of latent heat release in the Indian and East Asian monsoon regions on the South Asian high (Wei et al 2014(Wei et al , 2015 and to examine the atmospheric response to the heating over the Kuroshio Extension region (Wang et al 2012). Figure 1 shows the climatology of summertime low-level circulation (stream function) and mass (SLP) fields in the Northern Hemisphere.…”

Section: Modelmentioning

confidence: 99%

Dynamical and thermodynamical coupling between the North Atlantic subtropical high and the marine boundary layer clouds in boreal summer

Wei

Deng

et al. 2017

Clim Dyn

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upwelling in the MBL cloud region, reducing the boundary surface temperature. Meanwhile, warm advection associated with the easterly anomalies from the African continent leads to warming over the MBL cloud region at 700 hPa. Such warming and the surface cooling increase the atmospheric static stability, favoring growth of the MBL clouds. The anomalous diabatic cooling associated with the growth of the MBL clouds dynamically excites an anomalous anticyclone to its north and contributes to strengthening of the NASH circulation in its southeast flank. The dynamical and thermodynamical couplings and their associated variations in the NASH, MBL clouds, and SSTs constitute an important aspect of the summer climate variability over the North Atlantic.

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Impact of Indian summer monsoon on the South Asian High and its influence on summer rainfall over China

Cited by 191 publications

References 21 publications

The relation of cross‐equatorial flow during winter and spring with South China Sea summer monsoon onset

The relation of cross‐equatorial flow during winter and spring with South China Sea summer monsoon onset

Linkages between the South and East Asian summer monsoons: a review and revisit

Dynamical and thermodynamical coupling between the North Atlantic subtropical high and the marine boundary layer clouds in boreal summer

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