| APPLICATIONS OF THE CLOUDSAT TROPICAL CYCLONE PRODUCT IN ANALYZING THE VERTICAL STRUCTURE OF TROPICAL CYCLONES OVER THE WESTERN PACIFIC |
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| 作者姓名： | 李冠林 严 卫 韩 丁 王 蕊 叶 晶 |
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| 摘 要： | Cloud profiling radar (CPR) onboard CloudSat allows for deep penetration into dense
clouds/precipitation. In this study, tropical cyclones (TCs) are classified into three stages
as developing, mature, and decaying. The circular TC area with the radius of 500 km is divided
into five regions. The vertical structure characteristics of 94 Western Pacific TCs at
different stages in different regions from June 2006 to February 2014 are statistically
quantified using the CloudSat tropical cyclone overpass product (the CSTC Product). Contoured
frequency by altitude diagrams (CFADs) of radar reflectivity show an arc-like feature and
exhibit opposite distributions with a boundary at 5 km. Bright bands are found at this
altitude, indicating melting layers. Deep convective (DC) clouds have the largest occurrence
probability in the inner region, while Ci clouds occur more frequently in the outer region at
10-15 km. As clouds have the second largest vertical scale after DC clouds. Distributions of
Ac, Cu, and Ns clouds at different stages have few distinctions. As the altitude increases,
the ice effective radius and the distribution width parameter decrease while the particle
number concentration increases. Moist static energy (MSE), cloud thickness (CT), liquid water
path (LWP), ice water path (IWP), water vapor (WV), and rain rate (RR) all diminish along the
radial direction and are significantly larger at the mature stage. The average value of MSE at
the developing stage is larger than that at the decaying stage.
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| 关 键 词： | CPR CloudSat tropical cyclone vertical structure statistical analysis |
| 修稿时间： | 2017/1/9 0:00:00 |
APPLICATIONS OF THE CLOUDSAT TROPICAL CYCLONE PRODUCT IN ANALYZING THE VERTICAL STRUCTURE OF TROPICAL CYCLONES OVER THE WESTERN PACIFIC |
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| LI Guan-lin,YAN Wei,HAN Ding,WANG Rui and YE Jing.APPLICATIONS OF THE CLOUDSAT TROPICAL CYCLONE PRODUCT IN ANALYZING THE VERTICAL STRUCTURE OF TROPICAL CYCLONES OVER THE WESTERN PACIFIC[J].Journal of Tropical Meteorology,2017,23(1):1-14. |
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| Authors: | LI Guan-lin YAN Wei HAN Ding WANG Rui and YE Jing |
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| Institution: | College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing
211101 China |
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| Abstract: | Cloud profiling radar (CPR) onboard CloudSat allows for deep penetration into dense
clouds/precipitation. In this study, tropical cyclones (TCs) are classified into three stages
as developing, mature, and decaying. The circular TC area with the radius of 500 km is divided
into five regions. The vertical structure characteristics of 94 Western Pacific TCs at
different stages in different regions from June 2006 to February 2014 are statistically
quantified using the CloudSat tropical cyclone overpass product (the CSTC Product). Contoured
frequency by altitude diagrams (CFADs) of radar reflectivity show an arc-like feature and
exhibit opposite distributions with a boundary at 5 km. Bright bands are found at this
altitude, indicating melting layers. Deep convective (DC) clouds have the largest occurrence
probability in the inner region, while Ci clouds occur more frequently in the outer region at
10-15 km. As clouds have the second largest vertical scale after DC clouds. Distributions of
Ac, Cu, and Ns clouds at different stages have few distinctions. As the altitude increases,
the ice effective radius and the distribution width parameter decrease while the particle
number concentration increases. Moist static energy (MSE), cloud thickness (CT), liquid water
path (LWP), ice water path (IWP), water vapor (WV), and rain rate (RR) all diminish along the
radial direction and are significantly larger at the mature stage. The average value of MSE at
the developing stage is larger than that at the decaying stage. |
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| Keywords: | CPR CloudSat tropical cyclone vertical structure statistical analysis |
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