Strengthening North Pacific Influences on United States Temperature Variability.
Strengthening North Pacific Influences on United States Temperature Variability.
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DOI：
10.1038/s41598-017-00175-y
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发表时间：
2017-03-09
影响因子：
4.6
通讯作者：
Lee S
中科院分区：
文献类型：
--
作者：
Schulte JA;Lee S
在变化的气候系统下，大气环流模式出现频率的变化对区域气候变率有重要影响。虽然许多研究侧重于了解大气模式幅度和发生概率的趋势，但很少注意气候变量与大规模模式之间的联系如何变化。在这里，我们首先记录了一个重要的北太平洋遥相关-东太平洋/北太平洋（EP/NP）模式-和美国（US）自20世纪50年代以来的温度变率之间的关系加强。EP/NP型与热带对流有关，并且在同一时期，美国温度异常和热带对流异常之间的一致性也一直在增加。这种上升趋势在对流温度排列是最显着的在秋季和冬季，是在夏季缺席。关系的优势和趋势进一步表明，EP/NP模式应纳入每月和季节的展望，是广泛的重要性，农业，工业和渔业。
Changes in the frequency of occurrence of atmospheric circulation patterns under a changing climate system has important implications for regional climate variability. While many studies have focused on understanding the trends in the atmospheric pattern amplitudes and probabilities of occurrence, little attention has been given to how the linkages between climate variables and the large-scale patterns have been changing. Here we first document the strengthening relationship between an important North Pacific teleconnection - the East Pacific/North Pacific (EP/NP) pattern – and United States (US) temperature variability since the 1950s. The EP/NP pattern is linked to tropical convection, and consistently the coherence between US temperature anomalies and tropical convection anomalies has also been increasing during the same time period. This upward trend in convection-temperature alignment is most notable during autumn and winter and is absent during the summer. The relationship strengths and trends further suggest that the EP/NP pattern should be incorporated into monthly and seasonal outlooks that are of broad importance to agriculture, industry, and fisheries.