DOI: 10.1002/2015JD024686
论文题名: Retrievals of ice cloud microphysical properties of deep convective systems using radar measurements
作者: Tian J. ; Dong X. ; Xi B. ; Wang J. ; Homeyer C.R. ; McFarquhar G.M. ; Fan J.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期: 18 起始页码: 10820
结束页码: 10839
语种: 英语
英文关键词: cloud microphysical retrieval
; deep convection
; ice particles
; in situ measurement
; radars/radar observations
; remote sensing
Scopus关键词: airborne survey
; aircraft
; algorithm
; cloud microphysics
; convective cloud
; convective system
; experimental study
; ice crystal
; NEXRAD
; remote sensing
; supercell
; water content
英文摘要: This study presents newly developed algorithms for retrieving ice cloud microphysical properties (ice water content (IWC) and median mass diameter (Dm)) for the stratiform rain and thick anvil regions of deep convective systems (DCSs) using Next Generation Radar (NEXRAD) reflectivity and empirical relationships from aircraft in situ measurements. A typical DCS case (20 May 2011) during the Midlatitude Continental Convective Clouds Experiment (MC3E) is selected as an example to demonstrate the 4-D retrievals. The vertical distributions of retrieved IWC are compared with previous studies and cloud-resolving model simulations. The statistics from six selected cases during MC3E show that the aircraft in situ derived IWC and Dm are 0.47 ± 0.29 g m−3 and 2.02 ± 1.3 mm, while the mean values of retrievals have a positive bias of 0.19 g m−3 (40%) and negative bias of 0.41 mm (20%), respectively. To evaluate the new retrieval algorithms, IWC and Dm are retrieved for other DCSs observed during the Bow Echo and Mesoscale Convective Vortex Experiment (BAMEX) using NEXRAD reflectivity and compared with aircraft in situ measurements. During BAMEX, a total of 63, 1 min collocated aircraft and radar samples are available for comparisons, and the averages of radar retrieved and aircraft in situ measured IWC values are 1.52 g m−3 and 1.25 g m−3 with a correlation of 0.55, and their averaged Dm values are 2.08 and 1.77 mm. In general, the new retrieval algorithms are suitable for continental DCSs during BAMEX, especially within stratiform rain and thick anvil regions. ©2016. American Geophysical Union. All Rights Reserved. 资助项目: AGS-1359098
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62843
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Atmospheric Sciences, University of North Dakota, Grand Forks, ND, United States; School of Meteorology, University of Oklahoma, Norman, OK, United States; Department of Atmospheric Sciences, University of Illinois at Urbana–Champaign, Urbana, IL, United States; Pacific Northwest National Laboratory, Richland, WA, United States
Recommended Citation:
Tian J.,Dong X.,Xi B.,et al. Retrievals of ice cloud microphysical properties of deep convective systems using radar measurements[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(18)