Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL088506 |
Energetic Constraints on the ITCZ position in the Observed Seasonal Cycle from MERRA‐2 Reanalysis | |
Ho‐; Hsuan Wei; Simona Bordoni | |
2020-08-10 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
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. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/287776 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Ho‐,Hsuan Wei,Simona Bordoni. Energetic Constraints on the ITCZ position in the Observed Seasonal Cycle from MERRA‐2 Reanalysis[J]. Geophysical Research Letters,2020. |
APA | Ho‐,Hsuan Wei,&Simona Bordoni.(2020).Energetic Constraints on the ITCZ position in the Observed Seasonal Cycle from MERRA‐2 Reanalysis.Geophysical Research Letters. |
MLA | Ho‐,et al."Energetic Constraints on the ITCZ position in the Observed Seasonal Cycle from MERRA‐2 Reanalysis".Geophysical Research Letters (2020). |
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