Scopus记录号: 2-s2.0-85047366892
论文题名: Global climatology of planetary boundary layer top obtained from multi-satellite GPS RO observations
作者: Basha G. ; Kishore P. ; Ratnam M.V. ; Ravindra Babu S. ; Velicogna I. ; Jiang J.H. ; Ao C.O.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2019
卷: 52, 期: 2019-03-04 起始页码: 2385
结束页码: 2398
语种: 英语
英文关键词: COSMIC
; GPSRO
; PBL
; Radiosonde
; Refractivity
; Temperature
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. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122399
Appears in Collections: 气候变化事实与影响
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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
Recommended Citation:
Basha G.,Kishore P.,Ratnam M.V.,et al. Global climatology of planetary boundary layer top obtained from multi-satellite GPS RO observations[J]. Climate Dynamics,2019-01-01,52(2019-03-04)