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DOI | 10.1029/2018JD028490 |
A Study of Cloud Microphysical Processes Associated With Torrential Rainfall Event Over Beijing | |
Mao, Jiahua1; Ping, Fan1,2; Yin, Lei2; Qiu, Xinfa3 | |
2018-08-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:16页码:8768-8791 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The evolution of mesoscale convective systems (MCSs) leading to a heavy rainstorm event that occurred in Beijing on 21 July 2012 was simulated using the Weather Research and Forecasting model. Observational analyses indicated that this event can be divided into an earlier-occurring warm-sector precipitation (WSP) and a later-occurring cold-frontal precipitation (CFP). Owing to the considerable differences in their ambient weather conditions, the features and evolution of the cloud microphysics were different. Diagnoses of the mass- and heat-hydrometeor budgets showed that the major differences in rainwater source were that the graupel melting (PGMLT) and the collection of snow by rain (PRACS_s2r) had similar magnitudes in the WSP, and PGMLT was larger than PRACS_s2r in the CFP, while the accretion growth of cloud droplets (PRA) was always the largest in both phases. The main cooling effect in the WSP was due to the evaporation of rainwater (PRE) and cloud water, while it was PRE and PGMLT for the CFP. The mechanisms of how microphysical processes influenced the precipitation were explored. It was found that the strong PRA in the WSP was conducive to the formation of a supercooled water level and evoked a seeding effect. However, graupel processes were crucial for the CFP. The strong sublimation processes of graupel and snow associated with the collection of droplets by graupel caused more latent heat release and drove airflow to reach a higher convection height. Moreover, the stronger PGMLT cooled the air in the MCS and reduced the effect of cloud droplet accretion growth. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445331900025 |
WOS关键词 | MESOSCALE CONVECTIVE SYSTEM ; SIMULATED SQUALL LINE ; 2001 IMPROVE-2 EVENT ; 21 JULY 2012 ; HEAVY RAINFALL ; OBSERVATIONAL ANALYSIS ; MODEL SIMULATIONS ; RAINY-SEASON ; LATENT-HEAT ; PRECIPITATION |
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/33537 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing, Jiangsu, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Cloud Precipitat Phys & Severe Storms LAC, Beijing, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Mao, Jiahua,Ping, Fan,Yin, Lei,et al. A Study of Cloud Microphysical Processes Associated With Torrential Rainfall Event Over Beijing[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(16):8768-8791. |
APA | Mao, Jiahua,Ping, Fan,Yin, Lei,&Qiu, Xinfa.(2018).A Study of Cloud Microphysical Processes Associated With Torrential Rainfall Event Over Beijing.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(16),8768-8791. |
MLA | Mao, Jiahua,et al."A Study of Cloud Microphysical Processes Associated With Torrential Rainfall Event Over Beijing".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.16(2018):8768-8791. |
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