• Adv. Atmos. Sci.  2017, Vol. 34 Issue (12): 1426-1436    DOI: 10.1007/s00376-017-6176-5
    The Tropical Pacific-Indian Ocean Associated Mode Simulated by LICOM2.0
    Xin LI1, 2(), Chongyin LI1, 2
    1Institute of Meteorology & Oceanography, National University of Defense Technology, Nanjing 211101, China
    2State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China

    Oceanic general circulation models have become an important tool for the study of marine status and change. This paper reports a numerical simulation carried out using LICOM2.0 and the forcing field from CORE. When compared with SODA reanalysis data and ERSST.v3b data, the patterns and variability of the tropical Pacific-Indian Ocean associated mode (PIOAM) are reproduced very well in this experiment. This indicates that, when the tropical central-western Indian Ocean and central-eastern Pacific are abnormally warmer/colder, the tropical eastern Indian Ocean and western Pacific are correspondingly colder/warmer. This further confirms that the tropical PIOAM is an important mode that is not only significant in the SST anomaly field, but also more obviously in the subsurface ocean temperature anomaly field. The surface associated mode index (SAMI) and the thermocline (i.e., subsurface) associated mode index (TAMI) calculated using the model output data are both consistent with the values of these indices derived from observation and reanalysis data. However, the model SAMI and TAMI are more closely and synchronously related to each other.

    Just Accepted Date: 31 August 2017   Issue Date: 08 November 2017
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    Xin LI
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    Xin LI,Chongyin LI. The Tropical Pacific-Indian Ocean Associated Mode Simulated by LICOM2.0[J]. Adv. Atmos. Sci., 2017, 34(12): 1426 -1436 .
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    Li C. Y., M. Q. Mu, 1999: El Niño occurrence and sub-surface ocean temperature anomalies in the pacific warm pool.Chinese Journal of Atmospheric Sciences,23,513-521,doi: 10.3878/j.issn.1006-9895.1999.05.01. (in Chinese with English abstract)
    Li C. Y., M. Q. Mu, 2001: The influence of the Indian Ocean dipole on atmospheric circulation and climate. Adv. Atmos. Sci., 18, 831- 843.
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