气候变化领域集成服务门户(CCPortal): What Configuration of the Atmospheric Circulation Drives Extreme Net and Total Moisture Transport Into the Arctic

CCPortal

DOI	10.1029/2020GL089769
	What Configuration of the Atmospheric Circulation Drives Extreme Net and Total Moisture Transport Into the Arctic
	Papritz L.; Dunn-Sigouin E.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	Previous work highlighted different configurations of the atmospheric circulation causing moisture transport into the Arctic and contributing to surface warming. Here, we clarify the configurations leading to extreme wintertime events of zonal-mean net and total (sum of absolute values of poleward and equatorward) moisture transports by comparing feature-based weather system diagnostics with zonal-wavenumber decomposition of moisture transport in reanalysis data. Results show that extreme Arctic moisture transport events are attributable to individual weather systems, where cyclones favor net transport and blocks favor total transport. Zonal-wavenumber decomposition reveals that net moisture transport is dominated by planetary scales (zonal-wavenumbers k ≤ 3). Comparison between the two diagnostics suggests that blocks account for planetary scale contributions to net transport by interacting with cyclones rather than driving the transport themselves. Finally, net and total moisture transport events result in Arctic surface warming via different underlying processes related to cyclones and blocks, respectively. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Climatology; Digital storage; Moisture; Storms; Absolute values; Atmospheric circulation; Feature-based; Moisture transport; Planetary scale; Surface warming; Weather systems; Zonal wavenumber; Atmospheric movements; atmospheric circulation; cyclone; global warming; moisture; weather; Arctic Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169824
作者单位	Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland; Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
推荐引用方式 GB/T 7714	Papritz L.,Dunn-Sigouin E.. What Configuration of the Atmospheric Circulation Drives Extreme Net and Total Moisture Transport Into the Arctic[J],2020,47(17).
APA	Papritz L.,&Dunn-Sigouin E..(2020).What Configuration of the Atmospheric Circulation Drives Extreme Net and Total Moisture Transport Into the Arctic.Geophysical Research Letters,47(17).
MLA	Papritz L.,et al."What Configuration of the Atmospheric Circulation Drives Extreme Net and Total Moisture Transport Into the Arctic".Geophysical Research Letters 47.17(2020).