globalchange  > 气候变化与战略
DOI: 10.1002/joc.6222
论文题名:
Reduced extremes of sub-daily temperature swings during the boreal summer in the Northern Hemisphere
作者: Zhang W.; Villarini G.; Scoccimarro E.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2020
卷: 40, 期:2
语种: 英语
英文关键词: extremes ; global ; Sub-daily temperature ; trends
Scopus关键词: Kinetic energy ; Kinetics ; Agricultural productions ; Daily temperatures ; extremes ; global ; Northern Hemispheres ; Research and application ; Retrospective analysis ; trends ; Agriculture ; air temperature ; climate change ; extreme event ; Northern Hemisphere ; summer ; temperature anomaly ; trend analysis ; Australia ; China ; North Africa ; Rocky Mountains ; South Africa ; South Australia
英文摘要: Abrupt swings in temperature can exert negative impacts, ranging from human health to agricultural production. Here, we focus on a global assessment of the extremes in the temperature swings at sub-daily scales using Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) data. Overall, the regions with extremely large swings in hourly temperature (i.e., 99th percentile) are located in desert or arid regions, and the land masses exhibit larger temperature swings than the oceans. In contrast, the first percentile of the hourly temperature swings exhibits a different spatial pattern, with the lowest values (i.e., largest negative swings) located in the Rocky Mountain, South Australia, South and North Africa and some regions in Northwestern China. We identify a significant downward/upward trend in the 99th/1st percentile of sub-daily (i.e., hourly and 12 hr) temperature changes in the midlatitudes in the Northern Hemisphere, particularly during boreal summer. Overall, the regions with significant trends in the Northern Hemisphere are collocated with the paths of the jet streams and storm tracks. The significant downward/upward trends in the 99th/1st percentile of the sub-daily temperature swings over the Northern Hemisphere can be explained by a weakening in the Northern Hemisphere's summer circulation, as suggested by the downward trend in the eddy kinetic energy. These results indicate that a weak/strong persistence in the circulation may lead to less/more abrupt temperature swings (i.e., increase or decrease) caused by horizontal temperature advection. © 2019 Royal Meteorological Society
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159639
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: IIHR-Hydroscience & Engineering, The University of Iowa, Iowa City, IA, United States; Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy

Recommended Citation:
Zhang W.,Villarini G.,Scoccimarro E.. Reduced extremes of sub-daily temperature swings during the boreal summer in the Northern Hemisphere[J]. International Journal of Climatology,2020-01-01,40(2)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhang W.]'s Articles
[Villarini G.]'s Articles
[Scoccimarro E.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Zhang W.]'s Articles
[Villarini G.]'s Articles
[Scoccimarro E.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhang W.]‘s Articles
[Villarini G.]‘s Articles
[Scoccimarro E.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.