Contrasts of bimodal tropical instability waves(TIWs)-induced wind stress perturbations in the Pacific Ocean among observations, ocean models, and coupled climate models

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	Contrasts of bimodal tropical instability waves(TIWs)-induced wind stress perturbations in the Pacific Ocean among observations, ocean models, and coupled climate models
	Kai MA ; Chuanyu LIU ; Junli XU ; Fan WANG
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2024-01-15
出版年	2024
卷号	v.42 期号:01 页码:3-25
文献类型	CNKI期刊论文
摘要	The coupling between wind stress perturbations and sea surface temperature(SST)perturbations induced by tropical instability waves(TIWs) in the Pacific Ocean has been revealed previously and proven crucial to both the atmosphere and ocean. However, an overlooked fact by previous studies is that the loosely defined “TIWs” actually consist of two modes, including the Yanai wave-based TIW on the equator(hereafter eTIW) and the Rossby wave-based TIW off the equator(hereafter vTIW).Hence, the individual feedbacks of the wind stress to the bimodal TIWs remain unexplored. In this study,individual coupling relationships are established for both eTIW and v TIW, including the relationship between the TIW-induced SST perturbations and two components of wind stress perturbations, and the relationship between the TIW-induced wind stress perturbation divergence(curl) and the downwind(crosswind) TIW-induced SST gradients. Results show that, due to different distributions of eTIW and vTIW, the coupling strength induced by the eTIW is stronger on the equator, and that by the vTIW is stronger off the equator. The results of any of eTIW and vTIW are higher than those of the loosely defined TIWs. We further investigated how well the coupling relationships remained in several widely recognized oceanic general circulation models and fully coupled climate models. However, the coupling relationships cannot be well represented in most numerical models. Finally, we confirmed that higher resolution usually corresponds to more accurate simulation. Therefore, the coupling models established in this study are complementary to previous research and can be used to refine the oceanic and coupled climate models.
关键词	bimodal tropical instability waves mesoscale air-sea interaction coupled models Yanai wave
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A009;A010;
CNKI专题名称	气象学;海洋学;
分类号	P732.6;P42
语种	英文;
资助项目(基金）	National Natural Science Foundation of China (No. 41976012) ; the Key Research Program of Laoshan Laboratory (LSL)(No. LSKJ202202502) ; the Strategic Priority Research Program of Chinese Academy of Sciences (CAS)(No. XDB42000000)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186922
专题	中国科学院海洋研究所
作者单位	1.SchoolofMathematicsandPhysics,ResearchInstituteforMathematicsandInterdisciplinarySciences,QingdaoUniversityofScienceandTechnology 2.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 3.PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao)
推荐引用方式 GB/T 7714	Kai MA,Chuanyu LIU,Junli XU,et al. Contrasts of bimodal tropical instability waves(TIWs)-induced wind stress perturbations in the Pacific Ocean among observations, ocean models, and coupled climate models. 2024.