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The tropospheric biennial oscillation in the East Asian monsoon region and its influence on the precipitation in China and large‐scale atmospheric circulation in East Asia

The precipitation in China manifests a remarkable quasi‐biennial signal. For interannual variability, about 70% stations over China indicate the dominance of a quasi‐2‐year period. The maximum precipitation variability associated with the quasi‐biennial oscillation is located over the Yangtze River valley (YRV) and Huaihe River valley (HRV) as well as South China. This paper attempts to reveal the spatial–temporal evolution of the precipitation in China and related large‐scale atmospheric circulation associated with the tropospheric biennial oscillation (TBO) in East Asia by using a season‐dependent empirical orthogonal function (S‐EOF) analysis approach.