DOI: 10.1002/joc.5778
Scopus记录号: 2-s2.0-85052899586
论文题名: Changes in the temperature distribution in the top 150 m of the equatorial Indian Ocean in association with El Niño and monsoon drought
作者: Roose S. ; Joseph P.V. ; Mohanakumar K.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 1 起始页码: 31
结束页码: 42
语种: 英语
英文关键词: El Niño
; equatorial Indian Ocean
; Indian monsoon drought
; subsurface dipole
Scopus关键词: Atmospheric thermodynamics
; Drought
; Equatorial Indian Ocean
; Indian monsoon
; Ocean temperature
; Simple ocean data assimilations
; Subsurface dipoles
; Surface wind anomalies
; Temperature anomaly
; Vertical temperature profile
; Oceanography
; climate modeling
; data assimilation
; drought
; easterly wave
; El Nino
; monsoon
; sea surface temperature
; surface wind
; westerly
; Indian Ocean
; Indian Ocean (Equatorial)
英文摘要: The vertical temperature profiles of the equatorial Indian Ocean between the latitudes 5°S and 5°N in years of El Niño and monsoon drought have been studied using quality controlled ocean temperature (EN4) data set of the UK Met Office Hadley Centre and Simple Ocean Data Assimilation (SODA) reanalysis data. The temperature anomalies in the equatorial Indian Ocean were studied in three composites: (a) years of El Niño with no drought monsoon (composite A), (b) years of El Niño associated with drought monsoon (composite B) and (c) years of monsoon drought without El Niño (composite C). In composite A, a prominent subsurface dipole (SSD) in temperature is seen between depths of 60 and 120 m during the months September–November. It is not present in composite B. SSD is associated with surface wind anomalies, easterly in the equatorial central Indian Ocean and southeasterly in the equatorial eastern Indian Ocean. Drought monsoons have strong westerly surface wind anomalies in the equatorial central Indian Ocean, which reduces the strength of the equatorial easterly wind anomaly in composite B. In composite C, a negative SSD developed due to the strong anomalous westerly wind over the equatorial Indian Ocean associated with monsoon drought and the absence of El Niño induced equatorial easterly winds. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116663
Appears in Collections: 全球变化的国际研究计划
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作者单位: Department of Atmospheric Sciences, Cochin University of Science and Technology, Kochi, India; Nansen Environmental Research Centre India, Kochi, India; Advanced Centre for Atmospheric Radar Research, Cochin University of Science and Technology, Kochi, India
Recommended Citation:
Roose S.,Joseph P.V.,Mohanakumar K.. Changes in the temperature distribution in the top 150 m of the equatorial Indian Ocean in association with El Niño and monsoon drought[J]. International Journal of Climatology,2019-01-01,39(1)