gchange  > 气候变化与战略
DOI: 10.1175/JCLI-D-18-0293.1
Scopus ID: 2-s2.0-85058787935
Title:
Analysis of the global microwave polarization data of clouds
Author: Zeng X.; Skofronick-Jackson G.; Tian L.; Emory A.E.; Olson W.S.; Kroodsma R.A.
Source Publication: Journal of Climate
ISSN: 8948755
Indexed By: SCI ; SCI-E ; EI
Publishing Year: 2019
Volume: 32, Issue:1
pages begin: 3
pages end: 13
Language: 英语
Scopus Keyword: Aircraft ; Clouds ; Ice ; Microwave devices ; Microwaves ; Millimeter waves ; NASA ; Optical radar ; Radiometers ; Weather forecasting ; Climate analysis ; Cloud-aerosol lidar and infrared pathfinder satellite observations ; Global precipitation measurements ; Microwave imagers ; Microwave polarizations ; Millimeter-wave Imaging Radiometers ; Numerical weather prediction ; Passive microwaves ; Precipitation (meteorology) ; CALIPSO ; cloud ; CloudSat ; ice crystal ; microwave radiometer ; polarization ; satellite data ; statistical analysis
English Abstract: Information about the characteristics of ice particles in clouds is necessary for improving our understanding of the states, processes, and subsequent modeling of clouds and precipitation for numerical weather prediction and climate analysis. Two NASA passive microwave radiometers, the satellite-borne Global Precipitation Measurement (GPM) Microwave Imager (GMI) and the aircraft-borne Conical Scanning Millimeter-Wave Imaging Radiometer (CoSMIR), measure vertically and horizontally polarized microwaves emitted by clouds (including precipitating particles) and Earth's surface below. In this paper, GMI (or CoSMIR) data are analyzed with CloudSat (or aircraft-borne radar) data to find polarized difference (PD) signals not affected by the surface, thereby obtaining the information on ice particles. Statistical analysis of 4 years of GMI and CloudSat data, for the first time, reveals that optically thick clouds contribute positively to GMI PD at 166GHz over all the latitudes and their positive magnitude of 166-GHz GMI PD varies little with latitude. This result suggests that horizontally oriented ice crystals in thick clouds are common from the tropics to high latitudes, which contrasts the result of Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) that horizontally oriented ice crystals are rare in optically thin ice clouds. © 2018 American Meteorological Society.
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Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/117272
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Recommended Citation:
Zeng X.,Skofronick-Jackson G.,Tian L.,et al. Analysis of the global microwave polarization data of clouds[J]. Journal of Climate,2019-01-01,32(1)
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