| DOI: | 10.1016/j.atmosres.2017.08.008
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| Scopus记录号: | 2-s2.0-85033725812
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| 论文题名: | Tropical echo-top height for precipitating clouds observed by multiple active instruments aboard satellites |
| 作者: | Chen Y.; Fu Y.
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| 刊名: | Atmospheric Research
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| ISSN: | 1698095
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| 出版年: | 2018
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| 卷: | 199 | | 起始页码: | 54
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| 结束页码: | 61
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| 语种: | 英语
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| 英文关键词: | CALIOP
; CPR
; Echo-top height
; PR
; Radiative forcing
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| Scopus关键词: | Atmospheric radiation
; Optical radar
; Praseodymium
; Radar
; Radar measurement
; Rain
; Rain gages
; Tropics
; Approximate calculations
; CALIOP
; Cloud optical thickness
; Cloud profiling radar
; Cloud-aerosol lidar with orthogonal polarizations
; Echo-top height
; Radiative forcings
; Tropical rainfall measuring missions
; Precipitation (meteorology)
; CALIOP
; cloud
; radar
; radiative forcing
; satellite imagery
; spatial variation
|
| 英文摘要: | The echo-top height observed by the Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) has been used by some studies as an approximate calculation of the precipitating-cloud-top height to simulate radiative forcing or to identify overshooting convection. However, due to the low sensitivity (~ 17 dBZ) of PR, the PR-echo-top height is lower than the actual precipitating-cloud-top height. Here, the echo-top heights of the tropical precipitating cloud detected by PR, the Cloud Profiling Radar (CPR), and the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) were investigated to evaluate the underestimation of the PR-echo-top height to the actual precipitating-cloud-top height. The results show that there were significant spatial variations in the underestimates of precipitating-cloud-top height by PR. The model simulation showed that these underestimates led to an underestimation of the radiative forcing of the Earth system, the relative error of which was ~ 10% with 1-km underestimation and ~ 20% to 80% with 7-km underestimation when the cloud optical thickness was fixed to 10. Therefore, the underestimates of precipitating-cloud-top height by PR should be taken into consideration when using PR-echo-top height. © 2017 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/109026
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| 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: | School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
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| Recommended Citation: | |
Chen Y.,Fu Y.. Tropical echo-top height for precipitating clouds observed by multiple active instruments aboard satellites[J]. Atmospheric Research,2018-01-01,199
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