Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027457 |
The Challenge of Identifying Controls on Cloud Properties and Precipitation Onset for Cumulus Congestus Sampled During MC3E | |
Mechem, David B.1; Giangrande, Scott E.2 | |
2018-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:6页码:3126-3144 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Controls on precipitation onset and the transition from shallow cumulus to congestus are explored using a suite of 16 large-eddy simulations based on the 25 May 2011 event from the Midlatitude Continental Convective Clouds Experiment (MC3E). The thermodynamic variables in the model are relaxed at various timescales to observationally constrained temperature and moisture profiles in order to better reproduce the observed behavior of precipitation onset and total precipitation. Three of the simulations stand out as best matching the precipitation observations and also perform well for independent comparisons of cloud fraction, precipitation area fraction, and evolution of cloud top occurrence. All three simulations exhibit a destabilization over time, which leads to a transition to deeper clouds, but the evolution of traditional stability metrics by themselves is not able to explain differences in the simulations. Conditionally sampled cloud properties (in particular, mean cloud buoyancy), however, do elicit differences among the simulations. The inability of environmental profiles alone to discern subtle differences among the simulations and the usefulness of conditionally sampled model quantities argue for hybrid observational/modeling approaches. These combined approaches enable a more complete physical understanding of cloud systems by combining observational sampling of time-varying three-dimensional meteorological quantities and cloud properties, along with detailed representation of cloud microphysical and dynamical processes from numerical models. |
英文关键词 | MC3E LES congestus radar forcing nudging |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430108900012 |
WOS关键词 | LARGE-EDDY SIMULATION ; DIURNAL-CYCLE ; SHALLOW CUMULUS ; CLIMATE MODELS ; MARINE STRATOCUMULUS ; BOUNDARY-LAYER ; CONVECTION ; PARAMETERIZATION ; LAND ; MOISTURE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32974 |
专题 | 气候变化 |
作者单位 | 1.Univ Kansas, Dept Geog & Atmospher Sci, Lawrence, KS 66045 USA; 2.Brookhaven Natl Lab, Environm & Climate Sci Dept, Upton, NY 11973 USA |
推荐引用方式 GB/T 7714 | Mechem, David B.,Giangrande, Scott E.. The Challenge of Identifying Controls on Cloud Properties and Precipitation Onset for Cumulus Congestus Sampled During MC3E[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(6):3126-3144. |
APA | Mechem, David B.,&Giangrande, Scott E..(2018).The Challenge of Identifying Controls on Cloud Properties and Precipitation Onset for Cumulus Congestus Sampled During MC3E.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(6),3126-3144. |
MLA | Mechem, David B.,et al."The Challenge of Identifying Controls on Cloud Properties and Precipitation Onset for Cumulus Congestus Sampled During MC3E".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.6(2018):3126-3144. |
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