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Two Types of Mid-Latitudes Responses during La Ni?a

机译:在La Nina期间的两种类型的中纬度反应

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La Ni?a cases that occurred after 1948 are classified into cold and non-cold winters in the Far East to investigate the formation of disparate teleconnection patterns corresponding to the two types and to compare with those during El Ni?o. According to composite analyses using reanalysis datasets, the North Pacific Oscillation (NPO)/western Pacific (WP) pattern (NPO/WP pattern) and the Pacific-North American (PNA) pattern dominate in the cold and non-cold winters, respectively. As during El Ni?o, modulations of the local Hadley circulation associated with La Ni?a play an important role in the formation of the teleconnection patterns. These results indicate that the formation mechanisms of teleconnection patterns during La Ni?a are the same as those during El Ni?o but are not simple reverse signals.
机译:La Ni?1948年后发生的案例被分类为远东的寒冷和非冷冬季,以调查与两种类型相对应的不同电信连接模式的形成,并与EL NIΔO期间比较。 根据使用重新分析数据集的复合分析,北太平洋振荡(NPO)/西太平洋(WP)模式(NPO / WP模式)和太平洋北美(PCA)模式分别在寒冷和非冷冬季占主导地位。 如在EL NI?O期间,与LA NI相关的当地HADLEY循环的调制?在形成电信连接模式中发挥着重要作用。 这些结果表明,La Ni的遥连接图案的形成机制与EL NIΔO期间的遥控图案相同,但不是简单的反向信号。

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