气候变化领域集成服务门户(CCPortal): Energetic Constraints on the Intertropical Convergence Zone Position in the Observed Seasonal Cycle From Modern-Era Retrospective Analysis for Research and Applications; Version 2 (MERRA-2)

CCPortal

DOI	10.1029/2020GL088506
	Energetic Constraints on the Intertropical Convergence Zone Position in the Observed Seasonal Cycle From Modern-Era Retrospective Analysis for Research and Applications; Version 2 (MERRA-2)
	Wei H.-H.; Bordoni S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	Idealized simulations show that the approximate colocation between the ITCZ and the energy flux equator (EFE), which holds on the annual and zonal average, breaks down on subseasonal timescales, as the Hadley cell develops a shallow return flow and negative gross moist stability (GMS). Here, we explore if similar mechanisms are seen in reanalysis data. In the zonal mean, a temporal offset exists between the ITCZ and the EFE as the ITCZ is retreating from the Northern to Southern Hemisphere and the Hadley cell transports energy northward across the equator despite a northward-shifted ITCZ. At these times, the southern cell has a bottom-heavy structure, with a distorted cell boundary and northward energy transport. In the Eastern Pacific, while bottom-heavy structures exist throughout the year, the bottom heaviness is stronger in boreal fall, when GMS is negative, and SSTs are weak while their Laplacian is large and negative below the ITCZ. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric movements; Cells; Clouds; Distorted cells; Eastern pacific; Energy transport; Intertropical convergence zone; Research and application; Retrospective analysis; Seasonal cycle; Southern Hemisphere; Cytology; bottom current; energy flux; Hadley cell; intertropical convergence zone; seasonality; Southern Hemisphere; temporal analysis; wave energy; Pacific Ocean; Pacific Ocean (East)
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/169898
作者单位	Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; University of Colorado Boulder/Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States; Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy
推荐引用方式 GB/T 7714	Wei H.-H.,Bordoni S.. Energetic Constraints on the Intertropical Convergence Zone Position in the Observed Seasonal Cycle From Modern-Era Retrospective Analysis for Research and Applications; Version 2 (MERRA-2)[J],2020,47(16).
APA	Wei H.-H.,&Bordoni S..(2020).Energetic Constraints on the Intertropical Convergence Zone Position in the Observed Seasonal Cycle From Modern-Era Retrospective Analysis for Research and Applications; Version 2 (MERRA-2).Geophysical Research Letters,47(16).
MLA	Wei H.-H.,et al."Energetic Constraints on the Intertropical Convergence Zone Position in the Observed Seasonal Cycle From Modern-Era Retrospective Analysis for Research and Applications; Version 2 (MERRA-2)".Geophysical Research Letters 47.16(2020).