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DOI | 10.1175/JCLI-D-18-0614.1 |
On the Relation between the Boreal Spring Position of the Atlantic Intertropical Convergence Zone and Atlantic Zonal Mode | |
Pottapinjara, Vijay1,3; Girishkumar, M. S.1; Murtugudde, R.2; Am-fox, K.3; Ravichandran, M.1,4 | |
2019-08-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:15页码:4767-4781 |
文章类型 | Article |
语种 | 英语 |
国家 | India; USA |
英文摘要 | Previous studies have talked about the existence of a relation between the Atlantic meridional mode (AMM) and Atlantic zonal mode (AZM) via the meridional displacement of the intertropical convergence zone (ITCZ) in the Atlantic during boreal spring and the resulting cross-equatorial zonal winds. However, why the strong relation between the ITCZ (or AMM) and zonal winds does not translate into a strong relation between the ITCZ and AZM has not been explained. This question is addressed here, and it is found that there is a skewness in the relation between ITCZ and AZM: while a northward migration of ITCZ during spring in general leads to a cold AZM event in the ensuing summer, the southward migration of the ITCZ is less likely to lead to a warm event. This is contrary to what the previous studies imply. The skewness is attributed to the Atlantic seasonal cycle and to the strong seasonality of the AZM. All those cold AZM events preceded by a northward ITCZ movement during spring are found to strictly adhere to typical timings and evolution of the different Bjerknes feedback components involved. It is also observed that the causative mechanisms of warm events are more diverse than those of the cold events. These results can be expected to enhance our understanding of the AZM as well as that of chronic model biases and contribute to the predictability of the Indian summer monsoon through the links between the two as shown in our earlier studies. |
英文关键词 | Atlantic Ocean Intertropical convergence zone Atmosphere-ocean interaction Interannual variability Seasonal cycle |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474557100001 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; INDIAN MONSOON RAINFALL ; TROPICAL ATLANTIC ; EQUATORIAL ATLANTIC ; EL-NINO ; MERIDIONAL MODES ; VARIABILITY ; PACIFIC ; OCEAN ; ENSO |
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/185714 |
专题 | 气候变化 |
作者单位 | 1.Indian Natl Ctr Ocean Informat Serv, Hyderabad, India; 2.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA; 3.Univ Hyderabad, Ctr Earth Ocean & Atmospher Sci, Hyderabad, India; 4.Natl Ctr Polar & Ocean Res, Vasco Da Gama, Goa, India |
推荐引用方式 GB/T 7714 | Pottapinjara, Vijay,Girishkumar, M. S.,Murtugudde, R.,et al. On the Relation between the Boreal Spring Position of the Atlantic Intertropical Convergence Zone and Atlantic Zonal Mode[J]. JOURNAL OF CLIMATE,2019,32(15):4767-4781. |
APA | Pottapinjara, Vijay,Girishkumar, M. S.,Murtugudde, R.,Am-fox, K.,&Ravichandran, M..(2019).On the Relation between the Boreal Spring Position of the Atlantic Intertropical Convergence Zone and Atlantic Zonal Mode.JOURNAL OF CLIMATE,32(15),4767-4781. |
MLA | Pottapinjara, Vijay,et al."On the Relation between the Boreal Spring Position of the Atlantic Intertropical Convergence Zone and Atlantic Zonal Mode".JOURNAL OF CLIMATE 32.15(2019):4767-4781. |
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