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Change in the dominant decadal patterns and the late 1980s abrupt warming in the extratropical Northern Hemisphere

机译：北半球温带地区主要年代际格局的变化和1980年代后期的突然变暖

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Widespread abrupt warming in the extratropical Northern Hemisphere (NH) occurred in the late 1980s. This warming was associated with a change in the relative influence of the Pacific Decadal Oscillation (PDO)‐like pattern and the Arctic Oscillation (AO)‐like pattern. The AO‐like pattern has had a dominant influence on the NH‐mean temperature since the late 1980s, whereas the influence of the PDO has weakened. The AO‐like mode appears as part of natural variability in the pre‐industrial simulations of the CMIP3/IPCC climate models. However, its emergence in the late 1980s was not simulated by most models with or without the observed increasing greenhouse effect in the 20th century. Copyright © 2010 Royal Meteorological Society.
机译：温带北半球普遍突然变暖。发生在1980年代后期。这种变暖与太平洋年代际涛动和样地涛动和北极涛动AO和样地涛动的相对影响有关。自从1980年代末以来，AO样模式对NH平均温度起了主要影响，而PDO的影响却减弱了。在CMIP3＆sol; IPCC气候模型的工业前模拟中，类似于AO的模式表现为自然可变性的一部分。但是，无论有无观测到的20世纪温室效应的增加，大多数模型都没有模拟它在1980年代后期的出现。版权所有©2010皇家气象学会。

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