Influence of the Boreal Summer Intraseasonal Oscillation on Extreme Temperature Events in the Northern Hemisphere

被引：0
作者：
Yifei Diao
Tim Li
Pang-Chi Hsu
机构：
[1] Nanjing University of Information Science &Technology,Key Laboratory of Meteorological Disaster, Ministry of Education/Joint International Research Laboratory of Climate and Environmental Change/Collaborative Innovation Center on Forecast and Evaluation of
[2] University of Hawaii,International Pacific Research Center and Department of Atmospheric Sciences, School of Ocean and Earth Science and Technology
来源：
Journal of Meteorological Research | 2018年 / 32卷
关键词：
boreal summer intraseasonal oscillation; extreme hot events; extreme cool events; Rossby wave train; monsoonal circulation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The impact of the boreal summer intraseasonal oscillation (BSISO) on extreme hot and cool events was investigated, by analyzing the observed and reanalysis data for the period from 1983 to 2012. It is found that the frequency of the extreme events in middle and high latitudes is significantly modulated by the BSISO convection in the tropics, with a 3–9-day lag. During phases 1 and 2 when the BSISO positive rainfall anomaly is primarily located over a northwest–southeast oriented belt extending from India to Maritime Continent and a negative rainfall anomaly appears in western North Pacific, the frequency of extreme hot events is 40% more than the frequency of non-extreme hot events. Most noticeable increase appears in midlatitude North Pacific (north of 40°N) and higher-latitude polar region.
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页码：534 / 547
页数：13
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