Origin of intraseasonal variability of circulation in the tropical central Indian Ocean

被引：89
|
作者：
Sengupta, D [1 ]
Senan, R [1 ]
Goswami, BN [1 ]
机构：
[1] Indian Inst Sci, Ctr Atmospher & Ocean Sci, Bangalore 560012, Karnataka, India
来源：
GEOPHYSICAL RESEARCH LETTERS | 2001年 / 28卷 / 07期
关键词：
D O I：
10.1029/2000GL012251
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Observed upper ocean currents south of Sri Lanka exhibit large, irregular fluctuations with periods of days to weeks. An ocean model driven by daily surface winds is able to reproduce the observed fluctuations We find from model experiments that low frequency (30-50 day) intraseasonal variability (ISV) arises when; Rossby waves radiated from the eastern boundary are amplified by hydrodynamic instability in the eastern and central Indian Ocean. High frequency (10-15 day) ISV is forced directly by ISV of the wind field in the eastern Indian Ocean. In spite of the contribution from instability, the ocean circulation south of Sri Lanka is a deterministic response to wind forcing.
引用
收藏
页码：1267 / 1270
页数：4
相关论文
共 50 条
  • [1] Indian Ocean intraseasonal variability in an ocean general circulation model
    Schiller, A
    Godfrey, JS
    [J]. JOURNAL OF CLIMATE, 2003, 16 (01) : 21 - 39
  • [2] Causes of the Intraseasonal SST Variability in the Tropical Indian Ocean
    Tim Li
    Francis Tam
    [J]. Atmospheric and Oceanic Science Letters, 2008, 1 (01) : 18 - 23
  • [3] Causes of the Intraseasonal SST Variability in the Tropical Indian Ocean
    Li, Tim
    Tam, Francis
    Fu, Xiouhua
    Zhou Tian-Jun
    Zhu Wei-Jun
    [J]. ATMOSPHERIC AND OCEANIC SCIENCE LETTERS, 2008, 1 (01) : 18 - 23
  • [4] Intraseasonal variability of mixed layer depth in the tropical Indian Ocean
    Keerthi, M. G.
    Lengaigne, M.
    Drushka, K.
    Vialard, J.
    Montegut, C. de Boyer
    Pous, S.
    Levy, M.
    Muraleedharan, P. M.
    [J]. CLIMATE DYNAMICS, 2016, 46 (7-8) : 2633 - 2655
  • [5] Intraseasonal variability of mixed layer depth in the tropical Indian Ocean
    M. G. Keerthi
    M. Lengaigne
    K. Drushka
    J. Vialard
    C. de Boyer Montegut
    S. Pous
    M. Levy
    P. M. Muraleedharan
    [J]. Climate Dynamics, 2016, 46 : 2633 - 2655
  • [6] Modulation of the Intraseasonal Chlorophyll-a Concentration in the Tropical Indian Ocean by the Central Indian Ocean Mode
    Qin, Jianhuang
    Meng, Ze
    Xu, Wenlong
    Li, Baosheng
    Cheng, Xuhua
    Murtugudde, Raghu
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2022, 49 (07)
  • [7] Intraseasonal Oscillation in the Tropical Indian Ocean
    李崇银
    胡瑞金
    杨辉
    [J]. Advances in Atmospheric Sciences, 2005, (05) : 617 - 624
  • [8] Intraseasonal oscillation in the tropical Indian Ocean
    Li Chongyin
    Hu Ruijin
    Yang Hui
    [J]. Advances in Atmospheric Sciences, 2005, 22 (5) : 617 - 624
  • [9] Intraseasonal oscillation in the tropical Indian Ocean
    Li, CY
    Hu, RJ
    Yang, H
    [J]. ADVANCES IN ATMOSPHERIC SCIENCES, 2005, 22 (05) : 617 - 624
  • [10] Tropical oceanic intraseasonal variabilities associated with central Indian Ocean mode
    Meng, Ze
    Zhou, Lei
    Murtugudde, Raghu
    Yang, Qingxuan
    Pujiana, Kandaga
    Xi, Jingyuan
    [J]. CLIMATE DYNAMICS, 2022, 58 (3-4) : 1107 - 1126
12345