Variations of SST and thermocline depth in the tropical Indian Ocean during Indian Ocean Dipole events

被引：6

作者：

Sun S. ^{[1
]}

Lan J. ^{[1
]}

Wang Y. ^{[1
]}

机构：

[1] Physical Oceanography Laboratory, Ocean University of China

来源：

Journal of Ocean University of China | 2010年 / 9卷 / 2期

关键词：

ENSO; Indian Ocean Dipole; SST; Thermocline depth;

D O I：

10.1007/s11802-010-0129-2

中图分类号：

学科分类号：

摘要：

Interannual variations in the surface and subsurface tropical Indian Ocean were studied using HadISST and SODA datasets. Wind and heat flux datasets were used to discuss the mechanisms for these variations. Our results indicate that the surface and subsurface variations of the tropical Indian Ocean during Indian Ocean Dipole (IOD) events are significantly different. A prominent characteristic of the eastern pole is the SSTA rebound after a cooling process, which does not take place at the subsurface layer. In the western pole, the surface anomalies last longer than the subsurface anomalies. The subsurface anomalies are strongly correlated with ENSO, while the relationship between the surface anomalies and ENSO is much weaker. And the subsurface anomalies of the two poles are negatively correlated while they are positively correlated at the surface layer. The wind and surface heat flux analysis suggests that the thermocline depth variations are mainly determined by wind stress fields, while the heat flux effect is important on SST. © 2010 Science Press, Ocean University of China and Springer-Verlag Berlin Heidelberg.

引用

页码：129 / 134

页数：5

共 25 条

[11]

Li T., Wang B., Chang C.P., Zhang Y.S., A theory for the Indian Ocean dipole-zonal mode, J. Atmos. Sci., 60, pp. 2119-2135, (2003)

[12]

Liu Q.Y., Wang D.X., Xie Q., First CEOF mode of the thermal structure in the Indian Ocean, J. Geosci. Chin., 4, 2, pp. 45-56, (2002)

[13]

Nicholls N., Sea Surface temperatures and Australianwinter rainfall, J. Clim., 2, pp. 965-973, (1989)

[14]

Prasad T.G., McClean J.L., Mechanisms for anomalous warming in the western Indian Ocean during dipole mode events, J. Geophys. Res., 109, (2004)

[15]

Rao S.A., Behera S.K., Masumoto Y., Yamagata T., Interannual subsurface variability in the tropical Indian Ocean with a special emphasis on the Indian Ocean Dipole, Deep-Sea Res.II, 49, pp. 1549-1572, (2002)

[16]

Rao S.A., Masson S., Luo J.J., Behera S.A., Yamagata T., Termination of Indian Ocean dipole events in a coupled general circulation model, J. Clim., 20, pp. 3018-3034, (2007)

[17]

Rayner N.A., Parker D.E., Horton E.B., Folland C.K., Alexander L.V., Rowell D.P., Et al., Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century, J. Geophys. Res., 108, D14, (2003)

[18]

Saji N.H., Goswami B.N., Vinayachandran P.N., Yamagata T., A dipole mode in the tropical Indian Ocean, Nature, 401, pp. 360-363, (1999)

[19]

Saji N.H., Yamagata T., Possible impacts of Indian Ocean dipole events on global climate, Clim. Res., 25, pp. 151-169, (2003)

[20]

Shinoda T., Hendon H.H., Alexander M.A., Surface and subsurface dipole variability in the Indian Ocean and its relation with ENSO, Deep-Sea Res. II, 51, pp. 619-635, (2004)

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