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DOI | 10.1002/2016JD026220 |
A global lightning parameterization based on statistical relationships among environmental factors, aerosols, and convective clouds in the TRMM climatology | |
Stolz, Douglas C.; Rutledge, Steven A.; Pierce, Jeffrey R.; van den Heever, Susan C. | |
2017-07-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:14 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The objective of this study is to determine the relative contributions of normalized convective available potential energy (NCAPE), cloud condensation nuclei (CCN) concentrations, warm cloud depth (WCD), vertical wind shear (SHEAR), and environmental relative humidity (RH) to the variability of lightning and radar reflectivity within convective features (CFs) observed by the Tropical Rainfall Measuring Mission (TRMM) satellite. Our approach incorporates multidimensional binned representations of observations of CFs and modeled thermodynamics, kinematics, and CCN as inputs to develop approximations for total lightning density (TLD) and the average height of 30 dBZ radar reflectivity (AVGHT30). The results suggest that TLD and AVGHT30 increase with increasing NCAPE, increasing CCN, decreasing WCD, increasing SHEAR, and decreasing RH. Multiple-linear approximations for lightning and radar quantities using the aforementioned predictors account for significant portions of the variance in the binned data set (R-2 = 0.69-0.81). The standardized weights attributed to CCN, NCAPE, and WCD are largest, the standardized weight of RH varies relative to other predictors, while the standardized weight for SHEAR is comparatively small. We investigate these statistical relationships for collections of CFs within various geographic areas and compare the aerosol (CCN) and thermodynamic (NCAPE and WCD) contributions to variations in the CF population in a partial sensitivity analysis based on multiple-linear regression approximations computed herein. A global lightning parameterization is developed; the average difference between predicted and observed TLD decreases from +21.6 to +11.6% when using a hybrid approach to combine separate approximations over continents and oceans, thus highlighting the need for regionally targeted investigations in the future. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408346000016 |
WOS关键词 | MIXED-PHASE MICROPHYSICS ; PART I ; SUPERCELL STORMS ; PRECIPITATION FEATURES ; VERTICAL STRUCTURE ; DEEP CONVECTION ; AIR-POLLUTION ; FLASH RATE ; RADAR ; ELECTRIFICATION |
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/32933 |
专题 | 气候变化 |
作者单位 | Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Stolz, Douglas C.,Rutledge, Steven A.,Pierce, Jeffrey R.,et al. A global lightning parameterization based on statistical relationships among environmental factors, aerosols, and convective clouds in the TRMM climatology[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(14). |
APA | Stolz, Douglas C.,Rutledge, Steven A.,Pierce, Jeffrey R.,&van den Heever, Susan C..(2017).A global lightning parameterization based on statistical relationships among environmental factors, aerosols, and convective clouds in the TRMM climatology.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(14). |
MLA | Stolz, Douglas C.,et al."A global lightning parameterization based on statistical relationships among environmental factors, aerosols, and convective clouds in the TRMM climatology".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.14(2017). |
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