The role played by tropical cyclones-induced freshwater flux forcing in the upper-ocean responses: A case for Typhoon Yutu (2018)

doi:10.1016/j.ocemod.2023.102211

IOCAS-IR > 海洋环流与波动重点实验室

	The role played by tropical cyclones-induced freshwater flux forcing in the upper-ocean responses: A case for Typhoon Yutu (2018)
	Ye, Shuoni 1,4; Zhang, Rong-Hua2,3,4 ; Wang, Hongna 1,3
	2023-08-01
发表期刊	OCEAN MODELLING
ISSN	1463-5003
卷号	184 页码:16
通讯作者	Zhang, Rong-Hua(rzhang@nuist.edu.cn)
摘要	Tropical cyclones (TCs) produce heavy precipitation and provide excessive freshwater flux (FWF) to the ocean, which alters surface salinity and upper-ocean stratification, leading to changes in ocean physical processes. At present, roles played by TC-induced FWF (FWFTC) forcing in the upper-ocean responses have received less attention than those by TC-induced wind stress (TTC) forcing. An ocean model is used to investigate the role played by FWFTC forcing in upper-ocean responses in the Pacific; several numerical experiments and observation-based analyses are performed, focusing on Typhoon Yutu (2018). The FWFTC and TTC components are explicitly extracted from atmospheric reanalysis fields and are then taken into account or not in model sensitivity experiments. As expected, the FWFTC forcing acts to freshen the ocean surface, enhance the ocean stratification and reduce the mixing and entrainment of subsurface cold water into the mixed layer (ML), leading to potentially favoring surface warming; this FWF effect is opposite to that induced by TTC forcing (i.e., a cooling effect on sea surface temperature (SST)). The combined effects of FWFTC and TTC forcings lead to local ocean responses to Typhoon Yutu that are characterized by surface cooling and salting, which are dominated by the TTC forcing and are also modulated by the FWFTC forcing, depending on their relative magnitudes. When FWFTC forcing reaches a certain intensity and the TTC forcing is weak, however, the warming effect on SST due to FWFTC forcing can even exceed the cooling effect due to TTC forcing. When FWFTC forcing is relatively stronger than TTC forcing (e.g., TC-induced precipitation > 10.37 mm h-1 and TTC & SIM; 0.14 N m-2), the warming effect on SST due to FWFTC forcing can even exceed the cooling effect due to TTC forcing. Meanwhile, with the combination of TTC forcing, the FWFTC forcing can also promote SST cooling induced by the TTC forcing, which is dominated by mixing and entrainment. In this case, the FWFTC forcing increases surface heat loss from the ocean due to enhanced stratification, which contributes to TTC-induced vertical mixing and surface cooling. Further case studies are needed to thoroughly evaluate FWFTC-related effects on the upper ocean.
关键词	Tropical cyclones Upper-ocean responses Freshwater flux forcing Wind stress forcing Ocean modeling Observations
DOI	10.1016/j.ocemod.2023.102211
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[42030410] ; Startup Foundation for Introducing Talent of NUIST ; Laoshan Laboratory[LSKJ202202404]
WOS研究方向	Meteorology & Atmospheric Sciences ; Oceanography
WOS类目	Meteorology & Atmospheric Sciences ; Oceanography
WOS记录号	WOS:001013199500001
出版者	ELSEVIER SCI LTD
WOS关键词	HYBRID COUPLED MODEL ; THERMAL STRUCTURE ; WIND-SPEED ; PACIFIC ; LAYER ; SALINITY ; SEA ; SIMULATION ; CIRCULATION ; TRANSPORT
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182349
专题	海洋环流与波动重点实验室
通讯作者	Zhang, Rong-Hua
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Peoples R China 3.Laoshan Lab, Qingdao 266237, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Ye, Shuoni,Zhang, Rong-Hua,Wang, Hongna. The role played by tropical cyclones-induced freshwater flux forcing in the upper-ocean responses: A case for Typhoon Yutu (2018)[J]. OCEAN MODELLING,2023,184:16.
APA	Ye, Shuoni,Zhang, Rong-Hua,&Wang, Hongna.(2023).The role played by tropical cyclones-induced freshwater flux forcing in the upper-ocean responses: A case for Typhoon Yutu (2018).OCEAN MODELLING,184,16.
MLA	Ye, Shuoni,et al."The role played by tropical cyclones-induced freshwater flux forcing in the upper-ocean responses: A case for Typhoon Yutu (2018)".OCEAN MODELLING 184(2023):16.