气候变化领域集成服务门户(CCPortal): Propagating Mechanisms of the 2016 Summer BSISO Event: Air-Sea Coupling, Vorticity, and Moisture

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DOI	10.1029/2020JD033284
	Propagating Mechanisms of the 2016 Summer BSISO Event: Air-Sea Coupling, Vorticity, and Moisture
	Wang S.; Sobel A.H.; Lee C.-Y.; Ma D.; Chen S.; Curcic M.; Pullen J.
发表日期	2021
ISSN	2169897X
卷号	126 期号:2
英文摘要	During the summer of 2016, a boreal summer intraseasonal oscillation (BSISO) event was observed over Southeast Asia and the South China and Philippine seas. Precipitation anomalies associated with this event propagated northward at a speed of 0.5–1° per day from July to August. To understand the mechanisms, a regional atmosphere-ocean coupled system with the Weather Research and Forecasting (WRF) model and the Hybrid Coordinate Ocean Model (HYCOM) is used to study this BSISO event. The 50-day-long coupled simulations reasonably capture large-scale northward propagation of the event. Coupled simulations with altered air-sea interaction and atmosphere-only simulations with prescribed sea surface temperature illuminate the insignificant role of air-sea interaction within the computation domain in the northward propagation the for this event. Diagnostics of the coupled simulation as well as the ECMWF-Interim reanalyses indicate that convection and barotropic vorticity are largely in phase north of 5°N during the event. The BSISO convection is accompanied by moisture anomalies whose magnitudes increase as the BSISO propagates northward. Analysis of the moisture budget shows that positive horizontal advection leads positive moisture anomalies on the intraseasonal time scale north of 10°N. The vorticity-convection relationship, the lead-lag relationship between moisture and its horizontal advection, and the latitude dependence of each for this BSISO event are consistent with general features of BSISO events composited with ECWMF-Interim reanalysis and satellite precipitation data sets. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Boreal Summer Intraseasonal Oscillation; Maritime Continent; Tropical convection
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185564
作者单位	Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Lamont-Doherty Earth Observatory, Columbia University, New York, NY, United States; University of Washington, Seattle, WA, United States; University of Miami, Coral Gables, FL, United States; Jupiter Intelligence, New York, NY, United States
推荐引用方式 GB/T 7714	Wang S.,Sobel A.H.,Lee C.-Y.,et al. Propagating Mechanisms of the 2016 Summer BSISO Event: Air-Sea Coupling, Vorticity, and Moisture[J],2021,126(2).
APA	Wang S..,Sobel A.H..,Lee C.-Y..,Ma D..,Chen S..,...&Pullen J..(2021).Propagating Mechanisms of the 2016 Summer BSISO Event: Air-Sea Coupling, Vorticity, and Moisture.Journal of Geophysical Research: Atmospheres,126(2).
MLA	Wang S.,et al."Propagating Mechanisms of the 2016 Summer BSISO Event: Air-Sea Coupling, Vorticity, and Moisture".Journal of Geophysical Research: Atmospheres 126.2(2021).