气候变化领域集成服务门户(CCPortal): Wind Speed; Surface Flux; and Intraseasonal Convection Coupling From CYGNSS Data

CCPortal

DOI	10.1029/2020GL090376
	Wind Speed; Surface Flux; and Intraseasonal Convection Coupling From CYGNSS Data
	Bui H.X.; Maloney E.D.; Riley Dellaripa E.M.; Singh B.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	This study analyzes wind speed and surface latent heat flux anomalies from the Cyclone Global Navigation Satellite System (CYGNSS), aiming to understand the physical mechanisms regulating intraseasonal convection, particularly associated with the Madden-Julian oscillation (MJO). An advantage of CYGNSS compared to other space-based data sets is that its surface wind speed retrievals have reduced attenuation by precipitation, thus providing improved information about the importance of wind-induced surface fluxes for the maintenance of convection. Consistent with previous studies from buoys, CYGNSS shows that enhanced MJO precipitation is associated with enhanced wind speeds, and that associated surface heat flux anomalies have a magnitude about 7–12% of precipitation anomalies. Thus, latent heat flux anomalies are an important maintenance mechanism for MJO convection through the column moist static energy budget. A composite analysis during boreal summer over the eastern north Pacific also supports the idea that wind-induced surface flux is important for MJO maintenance there. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Budget control; Climatology; Heat convection; Latent heat; Maintenance; Storms; Surface measurement; Wind; Eastern north pacific; Global Navigation Satellite Systems; Madden-Julian oscillation; Moist static energy; Precipitation anomalies; Surface heat fluxes; Surface latent heat fluxes; Surface wind speed; Heat flux; anomaly; atmospheric convection; data buoy; GNSS; latent heat flux; Madden-Julian oscillation; precipitation intensity; seasonal variation; wind velocity; wind-driven circulation
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169507
作者单位	Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; International Research Institute for Climate and Society, Columbia University, New York, United States
推荐引用方式 GB/T 7714	Bui H.X.,Maloney E.D.,Riley Dellaripa E.M.,et al. Wind Speed; Surface Flux; and Intraseasonal Convection Coupling From CYGNSS Data[J],2020,47(21).
APA	Bui H.X.,Maloney E.D.,Riley Dellaripa E.M.,&Singh B..(2020).Wind Speed; Surface Flux; and Intraseasonal Convection Coupling From CYGNSS Data.Geophysical Research Letters,47(21).
MLA	Bui H.X.,et al."Wind Speed; Surface Flux; and Intraseasonal Convection Coupling From CYGNSS Data".Geophysical Research Letters 47.21(2020).