气候变化领域集成服务门户(CCPortal): A Relationship Between ITCZ Organization and Subtropical Humidity

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DOI	10.1029/2020GL088515
	A Relationship Between ITCZ Organization and Subtropical Humidity
	Hohenegger C.; Jakob C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	Motivated by the results of idealized studies on the self-aggregation of convection, we investigate a potential relationship between the degree of organization of the Intertropical Convergence Zone (ITCZ) and humidity based on reanalysis data. We focus on the Atlantic ITCZ and use the number of long convergence lines occurring per month to define the degree of organization. The latter shows a weak enhancement during June to August (JJA) and a large interannual variability. On an interannual time scale and particularly during JJA, a relationship exists between organization and humidity: Years with more organized ITCZs are associated with a moister ITCZ region and drier subtropics. Even though we cannot demonstrate any causality and cannot rule out the presence of another agent, we show that these moisture anomalies are not incompatible with an effect of organization. We also note that the annual cycle in sea surface temperature (SST) gradient may contribute to the intra-annual variability in organization. ©2020. The Authors.
英文关键词	Surface waters; Tropics; Annual cycle; Degree of organization; Interannual time scale; Interannual variability; Intertropical convergence zone; Intra-annual variability; Sea Surface Temperature gradients; Self aggregation; Oceanography; air-sea interaction; annual cycle; annual variation; atmospheric convection; humid environment; moisture content; sea surface temperature; subtropical region; 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/169880
作者单位	Max Planck Institute for Meteorology, Hamburg, Germany; ARC Centre of Excellence for Climate Extremes, Monash University, Melbourne, VIC, Australia; School of Earth, Atmosphere and Environment, Monash University, Melbourne, VIC, Australia
推荐引用方式 GB/T 7714	Hohenegger C.,Jakob C.. A Relationship Between ITCZ Organization and Subtropical Humidity[J],2020,47(16).
APA	Hohenegger C.,&Jakob C..(2020).A Relationship Between ITCZ Organization and Subtropical Humidity.Geophysical Research Letters,47(16).
MLA	Hohenegger C.,et al."A Relationship Between ITCZ Organization and Subtropical Humidity".Geophysical Research Letters 47.16(2020).