气候变化领域集成服务门户(CCPortal): Observed extreme Air-Sea heat Flux variations during three tropical cyclones in the tropical Southeastern Indian Ocean

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DOI	10.1175/JCLI-D-20-0170.1
	Observed extreme Air-Sea heat Flux variations during three tropical cyclones in the tropical Southeastern Indian Ocean
	Song X.; Ning C.; Duan Y.; Wang H.; Li C.; Yang Y.; Liu J.; Yu W.
发表日期	2021
ISSN	08948755
起始页码	3683
结束页码	3705
卷号	34 期号:9
英文摘要	Six-month buoy-based heat flux observations from the poorly sampled tropical southeastern Indian Ocean are examined to document the extremes during three tropical cyclones (TCs) from December 2018 to May 2019. The most striking feature at the mooring site (16.98S, 115.28E) during the TCs is the extensively suppressed diurnal cycle of the net surface flux (Qnet), with a mean daytime (nighttime) reduction of 470 (131) W m22, a peak decrease at approximately noon of 695 W m22 and an extreme drop during TC Riley of 800 W m22. The mean surface cooling in the daytime is primarily contributed by the 370 W m22 decrease in shortwave radiation associated with the increased cloudiness. The air-sea turbulent heat fluxes increase by approximately 151 W m22 in response to the enhanced wind speed under near-neutral boundary conditions. The daily mean rainfall-induced cooling is 8 W m22, with a maximum magnitude of 90 W m22. The mean values, seasonal variation, and synoptic variability of the characteristic heat fluxes are used to assess the new reanalysis data from ERA5 and MERRA2 and the analyzed OAFlux. The overall performance of the high-frequency net heat flux estimates at the synoptic scale is satisfactory, but the four flux components exhibit different quality levels. A serious error is that ERA5 and MERRA2 poorly represent TCs, and they show significant daily mean Qnet biases with opposite directions, 259 W m22 (largely due to the overestimated latent heat with a bias of 276 W m22) and 50 W m22 (largely due to the overestimated shortwave radiation with a bias of 41 W m22), respectively. © 2021 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Air-sea interaction; Buoy observations; Heat budgets/fluxes; Indian Ocean; Madden-Julian oscillation; Tropical cyclones
语种	英语
scopus关键词	Air; Hurricanes; Storms; Tropics; Wind; Air-sea heat flux; High frequency HF; Maximum magnitudes; Seasonal variation; Short-wave radiation; Synoptic variability; Tropical cyclone; Turbulent heat fluxes; Heat flux
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178603
作者单位	Key Laboratory of Marine Hazards Forecasting, Ministry of Natural Resources, Hohai University, Nanjing, China; First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; School of Atmospheric Sciences, Sun Yat-Sen University, Zhuhai, China; Key Laboratory of Tropical Atmosphere-Ocean System, Sun Yat-Sen University, Ministry of Education, Zhuhai, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
推荐引用方式 GB/T 7714	Song X.,Ning C.,Duan Y.,et al. Observed extreme Air-Sea heat Flux variations during three tropical cyclones in the tropical Southeastern Indian Ocean[J],2021,34(9).
APA	Song X..,Ning C..,Duan Y..,Wang H..,Li C..,...&Yu W..(2021).Observed extreme Air-Sea heat Flux variations during three tropical cyclones in the tropical Southeastern Indian Ocean.Journal of Climate,34(9).
MLA	Song X.,et al."Observed extreme Air-Sea heat Flux variations during three tropical cyclones in the tropical Southeastern Indian Ocean".Journal of Climate 34.9(2021).