气候变化领域集成服务门户(CCPortal): Global climatology of planetary boundary layer top obtained from multi-satellite GPS RO observations

CCPortal

DOI	10.1007/s00382-018-4269-1
	Global climatology of planetary boundary layer top obtained from multi-satellite GPS RO observations
	Basha G.; Kishore P.; Ratnam M.V.; Ravindra Babu S.; Velicogna I.; Jiang J.H.; Ao C.O.
发表日期	2019
ISSN	0930-7575
起始页码	2385
结束页码	2398
卷号	52 期号:2020-03-04
英文摘要	Accurate estimation of the planetary boundary layer (PBL) top is essential for air quality prediction, weather forecast, and assessment of regional and global climate models. In this article, the long-term climatology of seasonal, global distribution of PBL is presented by using global positioning system radio occultation (GPSRO) based payloads such as Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC), Communication/Navigation Outage Forecast System (C/NOFS), TerraSAR-X, and The Gravity Recovery and Climate Experiment (GRACE) from the year 2006–2015. We used Wavelet Covariance Transform (WCT) technique for precise PBL top identification. The derived PBL top from GPSRO data is rigorously evaluated with GPS radiosonde data over Gadanki. Significant seasonal variation is noticed in both radiosonde and GPSRO observations. Further, we compared the PBL obtained GPS RO with global radiosonde network and observed very good correlation. The number of occultations reaching down to 500 m and retrieval rate of PBL top from WCT method is very high in mid-latitudes compared to tropical latitudes. The global distribution of PBL top shows significant seasonal variation with higher during summer followed by spring, fall, and minimum in winter. In the vicinity of Inter Tropical Convergence Zone (ITCZ), the PBL top is high over eastern Pacific compared to other regions. The ERA-Interim reanalysis data underestimate the PBL top compared to GPS RO observations due to different measurement techniques. The seasonal variation of global averaged PBL top over land and ocean shows contrasting features at different latitude bands. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	COSMIC; GPSRO; PBL; Radiosonde; Refractivity; Temperature
语种	英语
scopus关键词	boundary layer; climate prediction; climatology; covariance analysis; GPS; observational method; radiosonde; transform; weather forecasting; Gadanki; India; Tamil Nadu
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146527
作者单位	National Atmospheric Research Laboratory, Gadanki, Tirupati, India; Department of Earth System Science, University of California, Irvine, CA 92697, United States; Jet propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States
推荐引用方式 GB/T 7714	Basha G.,Kishore P.,Ratnam M.V.,et al. Global climatology of planetary boundary layer top obtained from multi-satellite GPS RO observations[J],2019,52(2020-03-04).
APA	Basha G..,Kishore P..,Ratnam M.V..,Ravindra Babu S..,Velicogna I..,...&Ao C.O..(2019).Global climatology of planetary boundary layer top obtained from multi-satellite GPS RO observations.Climate Dynamics,52(2020-03-04).
MLA	Basha G.,et al."Global climatology of planetary boundary layer top obtained from multi-satellite GPS RO observations".Climate Dynamics 52.2020-03-04(2019).