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首页> 外文期刊>ournal of the Meteorological Society of Japan >Moisture Circulation over East Asia during El Niño Episode in Northern Winter, Spring and Autumn
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Moisture Circulation over East Asia during El Niño Episode in Northern Winter, Spring and Autumn

机译：春季冬季埃尔尼诺省埃尼诺省的潮湿循环在ElNiño剧院期间

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摘要

Diagnostic analysis is made to investigate features of the moisture circulation over East Asian during the El Niño episode in northern winter, spring and autumn. It is found that in all these seasons, the anomalies of precipitation in China, atmospheric precipitable water, water vapor transport and moisture divergence over East Asia in the El Niño mature phase, differ from those in the rest of the phases. In the El Niño mature phase, positive precipitation anomalies occur in the southern part of China. More northeastward water vapor transport appears around the southeastern coast of East Asia, where moisture converges, and precipitable water is above normal, which are consistent with the precipitation anomalies. The physical process through which El Ninñ affects the East Asian climate, is also identified. Differing from the rest of the phases in the El Niño episode, the mature phase is characterized by strong convective cooling anomalies in the atmosphere, in the area (0-15°N, 110°E-150°E) over the western tropical Pacific. As a Rossby wave response of the tropical atmosphere to the cooling anomalies, an anomalous low-level anticyclone forms to the north of the maritime continent. This anticyclonic anomaly not only transports more water vapor to the area around the southeastern coast of East Asia, but also strengthens the western Pacific subtropical high, and shifts it to the south of the mainland China, which are favorable for more precipitation in the southern part of China.
机译：诊断分析探讨了在北冬ElNiño集中的东亚水分循环的特征，春季和秋季。有人发现，在所有这些季节中，在ElNiño成熟阶段，中国降水，大气降水，水蒸气，水蒸气运输和水分分歧的异常，与其他阶段的阶段不同。在ElNiño成熟阶段，阳性降水异常发生在中国南部。东亚东南海岸的东南水蒸气运输更多，水分会聚和可降水量高于正常，这与降水异常一致。 ElNinñ影响东亚气候的物理过程也得到了鉴定。与ELNiño发作中的其余相比不同，成熟相的特征在于在大气中强烈的对流冷却异常，在热带太平洋的地区（0-15°N，110°E-150°E）中。作为热带气氛的rossby波浪响应到冷却异常，在海洋大陆北部的异常低水平的反周气旋形式。这种反气旋异常不仅将更多的水蒸气运输到东亚东南海岸周围的地区，而且还加强了西太平洋亚热带高位，并将其转移到中国大陆的南部，这有利于南部的更多降水中国的。

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