Abstract
The present paper examined the teleconnections between two huge Asian summer monsoon components (South and East Asia) during three time slices in future: near-(2010–2039), mid-(2040–2069) and far-(2070–2100) futures under the RCP4.5 and RCP8.5 scenarios. For this purpose, a high-resolution atmospheric general circulation model is used and integrated at 40 km horizontal resolution. To get more insight into the relationships between the two Asian monsoon components, we have studied the spatial displaying correlation coefficients (CCs) pattern of precipitation over the entire Asian monsoon region with that of South Asia and three regions of East Asia (North China, Korea–Japan and Southern China) separately during the same three time slices. The possible factors responsible for these teleconnections are explored by using mean sea level pressure (MSLP) and wind fields at 850 hPa. The CC pattern of precipitation over South Asia shows an in-phase relationship with North China and an out-of-phase relationship with Korea–Japan, while precipitation variations over Korea–Japan and Southern China exhibit an out-of-phase relationship with South Asia. The CCs analysis between the two Asian blocks during different time slices shows the strongest CCs during the near and far future with the RCP8.5 scenario. The CC pattern of precipitation over Korea–Japan and Southern China with the wind (at 850 hPa) and MSLP fields indicate that the major parts of the moisture over Korea–Japan gets transported from the west Pacific along the western limb of NPSH, while the moisture over Southern China comes from the Bay of Bengal and South China Seas for good monsoon activity.
Highlights
The East Asian and Indian Summer Monsoons (EASM and ISM) are two important components of the huge Asian summer monsoon system; these two components are largely associated with the different circulation systems that have been reviewed in many studies (Ramage 1971; Wang 2006; Preethi et al 2017a; Wu 2017)
To understand the possible causes of any such relationships, we have investigated the teleconnections of the mean sea level pressure (MSLP) and wind field at 850 hPa over the Indo-Pacific regions with the precipitation over South Asia, North China, Korea–Japan and Southern China separately for the same three time slices in future
An investigation of the projected teleconnections between the South (Indian sub-continent) and East Asian summer monsoon seasonal precipitation was carried out using a high-resolution atmospheric general circulation general circulation model (GME) at 40 km horizontal resolution during near, mid and far future time slices under the RCP4.5 and RCP8.5 scenarios
Summary
The East Asian and Indian Summer Monsoons (EASM and ISM) are two important components of the huge Asian summer monsoon system; these two components are largely associated with the different circulation systems that have been reviewed in many studies (Ramage 1971; Wang 2006; Preethi et al 2017a; Wu 2017). Some of the studies have well described the epochal variations of summer precipitation over South and East Asia (Kripalani and Kulkarni 2001; Josepth et al 2016). The relationships between the observed summer monsoon precipitations over South and East Asian regions have been reviewed in many studies (Kripalani and Kulkarni 1997, 2001; Krishnan and Sugi 2001; Wang et al 2001; Wu and Wang 2002). Some models are able of capturing the correct sign of the relationship between South and East Asian seasonal summer monsoon precipitation, an in-phase relationship with the North China and out-of-phase correlationships with Korea–Japan This suggests that the numerical models can be used for the detailed study of the future behavior of teleconnection and understand the processes involved in connecting the two Asian monsoon systems.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
