Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-018-4277-1 |
The poleward shift of South Atlantic Convergence Zone in recent decades | |
Zilli, Marcia T.1; Carvalho, Leila M. V.1,2; Lintner, Benjamin R.3 | |
2019-03-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:2545-2563 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | During austral summer (December-January-February or DJF), intense precipitation over central-eastern Brazil is modulated by the South American Monsoon System and the South Atlantic Convergence Zone (SACZ). Previous studies identified spatial variability in precipitation trends over this region, suggestive of a poleward shift of the SACZ in recent years. To identify underlying mechanisms associated with changes in the precipitation intensity and position of the SACZ, decadal averages of observed precipitation and the mean state of the atmosphere and ocean during three different periods from 1979 to 2014 are compared. Results show evidence of decreasing (increasing) average daily precipitation along the equatorward (poleward) margin of the climatological SACZ, likely related to a poleward shift of the convergence zone. Precipitation reduction along the equatorward margin of the SACZ is associated with weakening of the poleward winds along the eastern Brazilian coast and drying of low-to-mid troposphere (700hPa) over the tropical Atlantic. These changes in circulation and moisture are likely related to the poleward expansion of the South Atlantic Subtropical High. |
英文关键词 | South Atlantic Convergence Zone Precipitation Convective margin Decadal variability South America |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463842700003 |
WOS关键词 | SUMMER MONSOON RAINFALL ; SEA-SURFACE TEMPERATURE ; SCALE COMMON FEATURES ; BAIU FRONTAL ZONE ; INTERANNUAL VARIABILITY ; CLIMATE-CHANGE ; AMERICA ; PRECIPITATION ; MOISTURE ; TRENDS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/181412 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Santa Barbara, Dept Geog, 1832 Ellison Hall, Santa Barbara, CA 93106 USA; 2.Univ Calif Santa Barbara, Earth Res Inst, Santa Barbara, CA 93106 USA; 3.Rutgers State Univ, Dept Environm Sci, New Brunswick, NJ USA |
推荐引用方式 GB/T 7714 | Zilli, Marcia T.,Carvalho, Leila M. V.,Lintner, Benjamin R.. The poleward shift of South Atlantic Convergence Zone in recent decades[J]. CLIMATE DYNAMICS,2019,52:2545-2563. |
APA | Zilli, Marcia T.,Carvalho, Leila M. V.,&Lintner, Benjamin R..(2019).The poleward shift of South Atlantic Convergence Zone in recent decades.CLIMATE DYNAMICS,52,2545-2563. |
MLA | Zilli, Marcia T.,et al."The poleward shift of South Atlantic Convergence Zone in recent decades".CLIMATE DYNAMICS 52(2019):2545-2563. |
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