Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026622 |
Cloud-resolving model intercomparison of an MC3E squall line case: Part I-Convective updrafts | |
Fan, Jiwen1; Han, Bin1,2; Varble, Adam3; Morrison, Hugh4; North, Kirk5; Kollias, Pavlos5,6; Chen, Baojun2; Dong, Xiquan7; Giangrande, Scott E.8; Khain, Alexander9; Lin, Yun10; Mansell, Edward11; Milbrandt, Jason A.12; Stenz, Ronald13; Thompson, Gregory4; Wang, Yuan14 | |
2017-09-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; Canada; Israel |
英文摘要 | An intercomparison study of a midlatitude mesoscale squall line is performed using the Weather Research and Forecasting (WRF) model at 1 km horizontal grid spacing with eight different cloud microphysics schemes to investigate processes that contribute to the large variability in simulated cloud and precipitation properties. All simulations tend to produce a wider area of high radar reflectivity (Z(e) > 45 dBZ) than observed but a much narrower stratiform area. The magnitude of the virtual potential temperature drop associated with the gust front passage is similar in simulations and observations, while the pressure rise and peak wind speed are smaller than observed, possibly suggesting that simulated cold pools are shallower than observed. Most of the microphysics schemes overestimate vertical velocity and Z(e) in convective updrafts as compared with observational retrievals. Simulated precipitation rates and updraft velocities have significant variability across the eight schemes, even in this strongly dynamically driven system. Differences in simulated updraft velocity correlate well with differences in simulated buoyancy and low-level vertical perturbation pressure gradient, which appears related to cold pool intensity that is controlled by the evaporation rate. Simulations with stronger updrafts have a more optimal convective state, with stronger cold pools, ambient low-level vertical wind shear, and rear-inflow jets. Updraft velocity variability between schemes is mainly controlled by differences in simulated ice-related processes, which impact the overall latent heating rate, whereas surface rainfall variability increases in no-ice simulations mainly because of scheme differences in collision-coalescence parameterizations. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416387300025 |
WOS关键词 | BULK MICROPHYSICS PARAMETERIZATION ; POLARIMETRIC RADAR ; DEEP CONVECTION ; EXPLICIT FORECASTS ; REAR-INFLOW ; PRECIPITATION ; SENSITIVITY ; SIMULATIONS ; SYSTEM ; SCHEME |
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/33042 |
专题 | 气候变化 |
作者单位 | 1.Pacific Northwest Natl Lab, Richland, WA 99352 USA; 2.Nanjing Univ, Sch Atmospher Sci, Nanjing, Jiangsu, Peoples R China; 3.Univ Utah, Dept Atmospher Sci, Salt Lake City, UT USA; 4.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 5.McGill Univ, Dept Atmospher & Ocean Sci, Montreal, PQ, Canada; 6.SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA; 7.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ USA; 8.Brookhaven Natl Lab, Environm & Climate Sci Dept, Upton, NY 11973 USA; 9.Hebrew Univ Jerusalem, Inst Earth Sci, Jerusalem, Israel; 10.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX USA; 11.NOAA, OAR, Natl Severe Storms Lab, Norman, OK USA; 12.Environm & Climate Change Canada, Meteorol Res Div, Dorval, PQ, Canada; 13.Univ North Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA; 14.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA |
推荐引用方式 GB/T 7714 | Fan, Jiwen,Han, Bin,Varble, Adam,et al. Cloud-resolving model intercomparison of an MC3E squall line case: Part I-Convective updrafts[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(17). |
APA | Fan, Jiwen.,Han, Bin.,Varble, Adam.,Morrison, Hugh.,North, Kirk.,...&Wang, Yuan.(2017).Cloud-resolving model intercomparison of an MC3E squall line case: Part I-Convective updrafts.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(17). |
MLA | Fan, Jiwen,et al."Cloud-resolving model intercomparison of an MC3E squall line case: Part I-Convective updrafts".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.17(2017). |
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