DOI: 10.1016/j.atmosres.2017.09.009
Scopus记录号: 2-s2.0-85033724519
论文题名: Comparison of cloud top heights derived from FY-2 meteorological satellites with heights derived from ground-based millimeter wavelength cloud radar
作者: Wang Z. ; Wang Z. ; Cao X. ; Tao F.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 199 起始页码: 113
结束页码: 127
语种: 英语
英文关键词: Cloud detection
; Cloud radar
; Cloud top height
; FY-2 satellites
Scopus关键词: Geostationary satellites
; Millimeter waves
; Orbits
; Radar
; Rain
; Remote sensing
; Satellites
; Tracking radar
; Weather satellites
; Cloud detection
; Cloud radar
; Cloud radar reflectivity
; Cloud top heights
; Cloud-top temperatures
; Instrument performance
; Millimeter wavelength cloud radars
; Satellite remote sensing
; Space-based radar
; cloud cover
; comparative study
; detection method
; error correction
; geostationary satellite
; ground-based measurement
; performance assessment
; satellite data
; vertical profile
; China
英文摘要: Clouds are currently observed by both ground-based and satellite remote sensing techniques. Each technique has its own strengths and weaknesses depending on the observation method, instrument performance and the methods used for retrieval. It is important to study synergistic cloud measurements to improve the reliability of the observations and to verify the different techniques. The FY-2 geostationary orbiting meteorological satellites continuously observe the sky over China. Their cloud top temperature product can be processed to retrieve the cloud top height (CTH). The ground-based millimeter wavelength cloud radar can acquire information about the vertical structure of clouds—such as the cloud base height (CBH), CTH and the cloud thickness—and can continuously monitor changes in the vertical profiles of clouds. The CTHs were retrieved using both cloud top temperature data from the FY-2 satellites and the cloud radar reflectivity data for the same time period (June 2015 to May 2016) and the resulting datasets were compared in order to evaluate the accuracy of CTH retrievals using FY-2 satellites. The results show that the concordance rate of cloud detection between the two datasets was 78.1%. Higher consistencies were obtained for thicker clouds with larger echo intensity and for more continuous clouds. The average difference in the CTH between the two techniques was 1.46 km. The difference in CTH between low- and mid-level clouds was less than that for high-level clouds. An attenuation threshold of the cloud radar for rainfall was 0.2 mm/min; a rainfall intensity below this threshold had no effect on the CTH. The satellite CTH can be used to compensate for the attenuation error in the cloud radar data. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109029
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, CMA Key Laboratory for Aerosol-Cloud-Precipitation, Nanjing University of Information Science & Technology, Nanjing, 210044, China; School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing, 210044, China; CMA Training Center, Beijing, 100081, China; CMA Atmosphere Observation Test Bed, Beijing, 100081, China; CMA Meteorological Observation Center, Beijing, 100081, China
Recommended Citation:
Wang Z.,Wang Z.,Cao X.,et al. Comparison of cloud top heights derived from FY-2 meteorological satellites with heights derived from ground-based millimeter wavelength cloud radar[J]. Atmospheric Research,2018-01-01,199