Weakened Connection between East China Summer Rainfall and the East Asia-Pacific Teleconnection Pattern
نویسندگان
چکیده
The interdecadal change in the relationship between East Asia-Pacific (EAP) teleconnection pattern and rainfall over China during boreal summer (June–August) was investigated using observation reanalysis datasets 1951–2018. As proposed a previous study, Yangtze-Huaihe River (YH-R) valley is below (above) normal when positive (negative) EAP event occurs. Based on close with anomalies, has been widely used prediction of variations YH-R valley. However, we found that anomalies basin associated were weaker less evident after late 1980s. This finding indicates decreased 1980s, decrease quality skill seasonal predictions related to pattern. pronounced weakening rainfall-EAP connection attributed northeastward displacement Japanese action center which caused anomalous vertical motion moisture transportation present research reveals expansion size Indo-Pacific warm pool 1980s likely responsible for shift by modulating convective activities northward propagation
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ژورنال
عنوان ژورنال: Atmosphere
سال: 2021
ISSN: ['2073-4433']
DOI: https://doi.org/10.3390/atmos12060704