Understanding the origins of interannual thermocline variations in the tropical Indian Ocean

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Abstract

Based on the data analysis of the 1000 hPa wind, SST and SSH anomalies, it is revealed that the atmospheric variations associated with Indian Ocean Dipole (IOD, or referred as Indian Ocean Zonal Dipole Mode, IOZDM) consist of a pair of anticyclones closely north and south of the equator with accompanying intense equatorial easterly anomalies, while the atmospheric variations related to El Niño/Southern Oscillation (ENSO) include a strong anticyclone in the southeastern tropical Indian Ocean (TIO) at higher latitudes with strong along-shore wind anomalies near Java-Sumatra coast. The different atmospheric forcing patterns lead to the fact that oceanic thermocline variations associated with IOD/IOZDM are more closely confined to the region north of 10°S, while ENSO-induced thermocline variations are dominant south of 10°S. Copyright 2005 by the American Geophysical Union.

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CITATION STYLE

APA

Yu, W., Xiang, B., Liu, L., & Liu, N. (2005). Understanding the origins of interannual thermocline variations in the tropical Indian Ocean. Geophysical Research Letters, 32(24), 1–4. https://doi.org/10.1029/2005GL024327

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