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http://dx.doi.org/10.5467/JKESS.2007.28.3.343

Characteristics of the Simulated ENSO in CGCM  

Moon, Byung-Kwon (Division of Science Education/Institute of Science Education, Chonbuk National University)
Publication Information
Journal of the Korean earth science society / v.28, no.3, 2007 , pp. 343-356 More about this Journal
Abstract
This paper explored the characteristics of the interannual sea surface temperature (SST) variability in the equatorial Pacific by analyzing the simulated data from a newly coupled general circulation model (CGCM). The CGCM simulates well the realistic ENSO variability as well as the mean climatologies including SST, seasonal cycle, precipitation, and subsurface structures. It is argued that the zonal gradient of SST in the equatorial Pacific is responsible for the over-energetic SST variability near the equatorial western boundary in the model. This variability could also be related to the strong westward propagation of SST anomalies which resulted from the enhanced the zonal advection feedback. The simple two-strip model supports this by sensitivity tests. Analysis of the relationship between zonal mean thermocline depth and NINO3 SST index suggested that the ENSO variability is controlled by the recharge-discharge oscillator of the model. The lead-lag regression result reveals that heat buildup process in the western equatorial Pacific associated with the increase of the barrier layer thickness (BLT) is a precedent condition for El $Ni\widetilde{n}o$ to develop.
Keywords
CGCM; ENSO; El $Ni\widetilde{n}o$; recharge-discharge oscillator;
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1 An, S.-I. and Jin, F.-R, 2001, Collective role of zonal advective and thermocline feedbacks in ENSO mode. Journal of Climate, 14, 3421-3432   DOI   ScienceOn
2 Cane, M.A., 1992, Tropical Pacific ENSO models: ENSO as a mode of the coupled system. Climate System Modeling, Trenberth, K.E. Eds., Cambridge University Press, 583-614
3 Dewitte, B., Cibot, C, Perigaud, C, An, S.I., and Terray L., 2007, Interaction between near-annual and ENSO modes in a CGCM simulation: role of the equatorial background mean state. Journal of Climate, 20, 1035-1052   DOI   ScienceOn
4 Gu, D. and Philander, S.GH., 1997, Interdecadal climate fluctuations that depend on exchanges between the tropics and extratropics. Science, 275, 805-807   DOI   ScienceOn
5 Kug, J.-S., 2003, ENSO predictability in various coupled models: roles of the Pacific ocean dynamic and the Indian ocean. Ph. D. thesis, Seoul National University, Seoul, Korea, 167 p
6 Maes, C, Picaut, J., Belamari, S., 2002, Salinity barrier layer and onset of El Nino in a Pacific coupled model. Geophysical Research Letters, 29, 2206
7 Mechoso, C. and Coauthors, 1995, The seasonal cycle over the tropical Pacific in coupled ocean-atmosphere general circulation models. Monthly Weather Review, 123, 2825-2838   DOI   ScienceOn
8 Noh, Y, Jang, C.-J, Yamagata, T., Chu, PC, and Kim, C-H., 2002, Simulation of more realistic upper-ocean processes from an OGCM with a new ocean mixed layer model. Journal of Physical Oceanography, 32, 1284-1307   DOI   ScienceOn
9 Numaguti, A., Takahashi, M., Nakajima, T, and Sumi, A., 1995, Development of an atmospheric general circulation model. Climate System Dynamics and Modeling. Matsuno, T. Eds., Vols. 1-3, University of Tokyo, 1-27
10 Pacanowski, R.C., 1995, MOM2 documentation, User's guide and reference manual. GFDL Ocean Group Tech, Rep. No.3
11 Pacanowski, R.C. and Philander, S.GH., 1981, Parameterization of vertical mixing in numerical models of tropical oceans. Journal of Physical Oceanography, 11, 1143-1451
12 Park, H.-S., 2003, Development of an atmosphere-ocean-sea ice coupled model and ENSO hindcast experiments. Ph. D. thesis, Pusan National University, Pusan, Korea, 109 p
13 Lee, W.-S., 2000, A Study of ENSO mechanisms using a CGCM. Ph. D. thesis, Yonsei University, Seoul, Korea, 170 p
14 Rosati, A. and Miyakoda, K., 1988, A general circulation model for upper ocean simulation. Journal of Physical Oceanography, 18, 1601-1626   DOI
15 Xie, P. and Arkin, P.A., 1997, Global precipitation: A 17-year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs. Bulletin of the American Meteorological Society, 78, 2539-2558   DOI   ScienceOn
16 Jin, F.-F, 1997b, An equatorial ocean recharge paradigm for ENSO. Part II: A stripped down coupled model. Journal of Atmospheric Science, 54, 830-846   DOI   ScienceOn
17 Wyrtki, K., 1975, El Nino: the dynamic response of the equatorial Pacific ocean to atmospheric forcing. Journal of Physical Oceanography, 5, 572-584   DOI
18 Kang, I.-S., Kug, J.-S., An, S.-I., and Jin, F.-R, 2004, A near-annual Pacific ocean basin mode. Journal of Climate, 17, 2478-2488   DOI   ScienceOn
19 Moon, B.-K., 2004, Characteristics of the vertical baro-clinic mode in the equatorial Pacific and its impact on the interannual and decadal variabilities. Ph. D. thesis, Seoul National University, Seoul, Korea, 182 p
20 Delecluse, P., Davey, M., Kitamura, Y., Philander, S., Suarez, M., and Bengtsson, L., 1998, Coupled general circulation modeling of the tropical Pacific. Journal of Geophysical Research, 103, 14357-14373   DOI
21 Bonan, GB., 1996, A land surface model for ecological, hydrological, and atmospheric studies: technical description and user's guide. NCAR Technical Note, National Center for Atmospheric Research, Boulder, Colorado, USA, 150 p
22 Maes, C, Picaut, J., Belamari, S., 2005, Importance of the salinity barrier layer for the buildup of El Nino. Journal of Climate, 18, 104-118   DOI   ScienceOn
23 Fedorov, A. and Philander, S.G, 2000, Is El Nino changing? Science, 288, 1997-2002   DOI   ScienceOn
24 Jin, F.-F, 1997a, An equatorial ocean recharge paradigm for ENSO. Part I: conceptual model. Journal of Atmospheric Science, 54, 811-829   DOI   ScienceOn
25 Kim, J.-K., 1999, Parameterization of land surface processes in an atmospheric general circulation model. Ph. D. thesis, Seoul National University, Seoul, Korea, 178 p
26 Levitus, S., 1982, Climatological Atlas of the World Ocean. NOAA 173 p
27 Meehl, GA., Gent, P.R., Arblaster, J.M., Otto-Bliesner, B.L., Brady, E.C., and Craig, A., 2001, Factors that affect the amplitude of El Nino in global coupled climate models. Climate Dynamics, 17, 515-526   DOI
28 Jin, F.-F, Kug, J.-S., An, S.-I., and Kang, I.-S., 2003, A near-annual coupled ocean-atmosphere mode in the equatorial Pacific ocean. Geophysical Research Letters, 30, 1080   DOI
29 Latif, M., Sterl, A., Maier-Reimer, E., and Junge, M.M., 1993, Climate variability in a coupled GCM. Part I: The tropical Pacific. Journal of Climate, 6, 5-21   DOI
30 Lee, Y.-K., Moon, B.-K., Kwon, M., and Jhun, J.-G, 2006, Roles of wind stress variations in the western north Pacific on the decadal change of ENSO. Journal of the Korean Earth Science Society, 27, 687-694   과학기술학회마을
31 Zebiak, S.E. and Cane, M.A., 1987, A model El Nino-Southern Oscillation. Monthly Weather Review, 115, 2262-2278   DOI
32 Maes, C, Ando, K., Delcroix, T., Kessler, W.S., McPhaden, M.J., and Roemmich, D., 2006, Observed correlation of surface salinity, temperature and barrier layer at the eastern edge of the western Pacific warm pool. Geophysical Research Letters, 33, L06601   DOI
33 Mantua, N.J. and Battisti, D.S., 1995, Aperiodic variability in the Zebiak-Cane coupled ocean-atmosphere model: Air-sea interactions in the western equatorial Pacific. Journal of Climate, 8, 2897-2927   DOI
34 Park, H.-S. and An, J.-B., 2004, Development of a new CGCM and ENSO hindcast Experiment using the CGCM(I). Journal of the Korean Meteorological Society, 40, 135-146
35 Robertson, A.W., Ma, C.-C, Ghil, M., and Mechoso, C. R., 1995, Simulation of the tropical Pacific climate with a coupled ocean-atmosphere general circulation model. Part II: Interannual variability. Journal of Climate, 8, 1199-1216   DOI   ScienceOn
36 Noh, Y. and Kim, H.-J., 1999, Simulations of temperature and turbulence structure of the oceanic boundary layer with the improved near-surface process. Journal of Geophysical Research, 104, 15621-15634   DOI
37 McPhaden, M.J., 1999, Genesis and evolution of the 1997-98 El Nino. Science, 283, 950-954   DOI   ScienceOn
38 Neelin, J.D. and Jin, F.-F., 1993, Modes of interannual tropical ocean-atmosphere interaction-A unified view. Part II: Analytical results in the weak-coupling limit. Journal of Atmospheric Science, 50, 3504-3522   DOI   ScienceOn
39 Carton, J.A., Chepurin, G, and Cao, X., 2000, A simple ocean data assimilation analysis of the global upper ocean 1950-95. Part I: Methodology, Journal of Physical Oceanography, 30, 294-309   DOI   ScienceOn
40 Holtslag, A.A.M. and Boville, B.A., 1993, Local versus non-local boundary-layer diffusion in a global climate model. Journal of Climate, 6, 1825-1842   DOI   ScienceOn
41 AchutaRao, K. and Sperber, K.R., 2002, Simulation of the El Nifio-Southern Oscillation: Results from the coupled model intercomparison project. Climate Dynamics, 19, 191-209   DOI