Southern China faces an intense drought that continued from summer season to autumn in 2022, ranking because the maximum excessive drought because 1980. The cause for the incidence of this severe drought event became investigated. It indicates that each the Eurasian warming and the tropical sea surface temperature (SST) performed key roles within the prevalence of this occasion.
The story is published within the mag Science China Earth Sciences. The drought in southern China sooner or later of the summer season of 2022 become strongly connected to the divergence of water vapor flux and descending motions, which resulted from the anomalous anticyclone over the western North Pacific and the northward motion of the East Asian subtropical jet, respectively.
The sustained drought in autumn end up specially caused with the aid of the cyclonic pass anomaly over the area from the Bay of Bengal to the South China Sea, which introduced approximately decreased moisture and descending motions in southern China.
The no longer frequently strong Eurasian warming and the acute La Niña-like pattern collectively resulted within the western North Pacific anticyclone circulation anomaly and the northward shift of the East Asian subtropical jet during summer season, even as the cyclonic movement anomaly winning over the area from the Bay of Bengal to the South China Sea in autumn turn out to be largely attributed to the extraordinarily poor SST anomalies in the tropical Indian Ocean.
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