THE IMPACT OF INITIAL FORCED WIND ON THE PREDICTABILITY OFTHE ZEBIAK-CANE COUPLED OCEAN-ATMOSPHERE MODEL

YUE Cai-jun; LU Wei-song; LI Qing-quan

Abstract:

With simultaneous observed sea surface temperature anomaly (SSTA), the difference between NCEP/NCAR 925hPa reanalysis wind stress anomaly (NCEPWSA) and FSU wind stress anomaly (FSUWSA) is analyzed, and the prediction abilities of Zebiak-Cane coupled ocean-atmosphere model (ZC coupled model) with NCEPWSA and FSUWSA serving respectively as initialization wind are compared. The results are as follows. The distribution feature of NCEPWSA matches better with that of the observed SSTA than counterpart of FSUWSA both in 1980s and in 1990s; The ZC ocean model has a better skill under the forcing of NCEPWSA than that of FSUWSA, especially in 1990s. Meanwhile, the forecast abilities of the ZC coupled model in 1990s as well as in 1980s have been improved employing NCEPWSA as initialization wind instead of FSUWSA. Particularly, it succeeded in predicting 1997/1998 El Niño 6 to 8 months ahead; further analysis shows that on the antecedent and onset stages of the 1997/1998 El Niño event, the horizontal cold and warm distribution characteristics of the simulated SSTA from ZC ocean model, with NCEPWSA forcing compared to FSUWSA forcing, match better with counterparts of the corresponding observed SSTA, whereby providing better predication initialization conditions for ZC coupled model, which, in turn, is favorable to improve the forecast ability of the coupled model.

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YUE Cai-jun, LU Wei-song, LI Qing-quan. THE IMPACT OF INITIAL FORCED WIND ON THE PREDICTABILITY OFTHE ZEBIAK-CANE COUPLED OCEAN-ATMOSPHERE MODEL [J]. Journal of Tropical Meteorology, 2006, 12(1): 67-75.

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THE IMPACT OF INITIAL FORCED WIND ON THE PREDICTABILITY OFTHE ZEBIAK-CANE COUPLED OCEAN-ATMOSPHERE MODEL

Shanghai Typhoon Institute, CMA

Abstract: With simultaneous observed sea surface temperature anomaly (SSTA), the difference between NCEP/NCAR 925hPa reanalysis wind stress anomaly (NCEPWSA) and FSU wind stress anomaly (FSUWSA) is analyzed, and the prediction abilities of Zebiak-Cane coupled ocean-atmosphere model (ZC coupled model) with NCEPWSA and FSUWSA serving respectively as initialization wind are compared. The results are as follows. The distribution feature of NCEPWSA matches better with that of the observed SSTA than counterpart of FSUWSA both in 1980s and in 1990s; The ZC ocean model has a better skill under the forcing of NCEPWSA than that of FSUWSA, especially in 1990s. Meanwhile, the forecast abilities of the ZC coupled model in 1990s as well as in 1980s have been improved employing NCEPWSA as initialization wind instead of FSUWSA. Particularly, it succeeded in predicting 1997/1998 El Niño 6 to 8 months ahead; further analysis shows that on the antecedent and onset stages of the 1997/1998 El Niño event, the horizontal cold and warm distribution characteristics of the simulated SSTA from ZC ocean model, with NCEPWSA forcing compared to FSUWSA forcing, match better with counterparts of the corresponding observed SSTA, whereby providing better predication initialization conditions for ZC coupled model, which, in turn, is favorable to improve the forecast ability of the coupled model.

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[1]	ZEBIAK S E, CANE M A. A model El Nino-Southernoscillation [J]. Monthly Weather Review, 1987, 115(10):2262-2278.
[2]	CANE M A, ZEBIAK S E, DOLAN S C. Experimentalforecasts of El Nino [J]. Nature, 1986, 321(26): 827-832.
[3]	BATTISTI D S. Dynamics and thermodynamics of awarming event in a coupled tropical atmosphere-ocean model[J]. Journal of Atmospheric Sciences, 1988, 45(20): 2889-2819.
[4]	GOSWAMI B N, SHUKLA J. Predictability of a coupledocean-atmosphere model [J]. Journal of Climate, 1991, 4(1): 3-22.
[5]	CHEN D, ZEBIAK S E, CANE M A. Initialization andpredictability of a coupled ENSO forecast model [J]. MonthlyWeather Review, 1997, 125(5): 773-788.
[6]	CHEN D, CANE M A, ZEBIAK S E, et al. The impact ofsea level data assimilation on the Lamont model prediction ofthe 1997/1998 El Nino [J]. Geophysical Research Letters, 1998,25(15): 2837-2840.
[7]	CHEN D, CANE M A, ZEBIAK S E. The impact of NSCATwinds on predicting the 1997/1998 El Nino: A study with theLamont model [J]. Journal of Geophysical Research, 1999,104(C5): 11321-11327.
[8]	ZHANG Zu-qiang, ZHAO Zong-ci, YU Zhan-jiang.Modification of the simplified coupled model for ENSO [J].Journal of Tropical Meteorology, 2004, 20(4): 337-345.
[9]	YUE Cai-jun, LU Wei-song, LI Qing-quan, et al. Theadvances on the research of Zebiak-Cane ocean-atmospherecoupled model [J]. Journal of Tropical Meteorology, 2004,20(6): 723-730.
[10]	LI Q Q, ZHAO Z C, DING Y H. Prediction andverification of the 1997-1999 El Nino and La Nina by using anintermediate ocean-atmosphere coupled mode [J]. ActaMeteorologica Sinica, 2001, 15(2): 144-159.
[11]	KALNAY E, COAUTHORS. The NCEP/NCAR 40-yearreanalysis project [J]. Bulletin of American MeteorologicalSociety, 1996, 77(3): 437-472.
[12]	KUG J S, KANG I S, ZEBIAK S E. The impacts of themodel assimilated wind stress data in the initialization of anintermediate ocean and the ENSO predictability [J].Geophysical Research Letters, 2001, 28(19): 3713-3716.
[13]	KANG I S, KUG J S. An El Nino prediction system usingan intermediate ocean and a statistical atmosphere [J].Geophysical Research Letters, 2000, 27(8): 1167-1170.
[14]	ZEBIAK S E. Tropical atmosphere-ocean interaction andthe El Ni?o /Southern Oscillation phenomenon D]. Cambridge:Massachusetts Institute of Technology, 1984.
[15]	WANG C, WEISBERG R H. The 1997-98 El Ni?oevolution relative to previous El Nino events [J]. Journal ofClimate, 2000, 13(2): 488-501.
[16]	BLUMENTHAL M B. Predictability of a coupled oceanatmospheremodel [J]. Journal of Climate, 1991, 4(8): 766-784..
[17]	MU M, DUAN W S, WAN J C. The predictabilityproblems in numerical weather and climate prediction [J].Advances in Atmospheric Sciences, 2002, 19(2): 191-204.

THE IMPACT OF INITIAL FORCED WIND ON THE PREDICTABILITY OFTHE ZEBIAK-CANE COUPLED OCEAN-ATMOSPHERE MODEL

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