气候变化领域集成服务门户(CCPortal): Diabatic Heating as a Pathway for Cyclone Clustering Encompassing the Extreme Storm Dagmar

CCPortal

DOI	10.1029/2019GL085777
	Diabatic Heating as a Pathway for Cyclone Clustering Encompassing the Extreme Storm Dagmar
	Weijenborg C.; Spengler T.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:8
英文摘要	Contrary to the general notion that extratropical cyclones reduce baroclinicity, the baroclinicity is found to be enhanced in the wake of the extreme winter storm Dagmar. Thus, individual storms can increase baroclinicity, yielding a pathway to secondary cyclogenesis and cyclone clustering. We use a recently introduced diagnostic for baroclinicity—the tendency equation for the isentropic slope—and found that strong diabatic heating due to moisture supply from the subtropical Atlantic led to the enhanced baroclinicity in the rear of Dagmar. Storms ensuing Dagmar benefited from this increased baroclinicity. In contrast to previous studies on the mechanisms of cyclone clustering, we only find weak evidence for Rossby wave breaking and thus propose diabatic heating as an alternative pathway to cyclone clustering. ©2020. The Authors.
英文关键词	Mechanical waves; Baroclinicity; Cyclogenesis; Diabatic heating; Extratropical cyclones; Isentropic; Rossby wave; Winter storms; Storms; baroclinic motion; cyclogenesis; diabatic process; extratropical cyclone; extreme event; heating; moisture content; Rossby wave; wave breaking; Atlantic 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/170443
作者单位	Geophysical Institute, University of Bergen, and Bjerknes Centre for Climate Research, Bergen, Norway
推荐引用方式 GB/T 7714	Weijenborg C.,Spengler T.. Diabatic Heating as a Pathway for Cyclone Clustering Encompassing the Extreme Storm Dagmar[J],2020,47(8).
APA	Weijenborg C.,&Spengler T..(2020).Diabatic Heating as a Pathway for Cyclone Clustering Encompassing the Extreme Storm Dagmar.Geophysical Research Letters,47(8).
MLA	Weijenborg C.,et al."Diabatic Heating as a Pathway for Cyclone Clustering Encompassing the Extreme Storm Dagmar".Geophysical Research Letters 47.8(2020).