Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0242.1 |
Primary Modes of Global Drop Size Distributions | |
Dolan, B.1; Fuchs, B.1; Rutledge, S. A.1; Barnes, E. A.1; Thompson, E. J.2 | |
2018-05-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:5页码:1453-1476 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Understanding drop size distribution (DSD) variability has important implications for remote sensing and numerical modeling applications. Twelve disdrometer datasets across three latitude bands are analyzed in this study, spanning a broad range of precipitation regimes: light rain, orographic, deep convective, organized midlatitude, and tropical oceanic. Principal component analysis (PCA) is used to reveal comprehensive modes of global DSD spatial and temporal variability. Although the locations contain different distributions of individual DSD parameters, all locations are found to have the same modes of variability. Based on PCA, six groups of points with unique DSD characteristics emerge. The physical processes that underpin these groups are revealed through supporting radar observations. Group 1 (group 2) is characterized by high (low) liquid water content (LWC), broad (narrow) distribution widths, and large (small) median drop diameters D-0. Radar analysis identifies group 1 (group 2) as convective (stratiform) rainfall. Group 3 is characterized by weak, shallow radar echoes and large concentrations of small drops, indicative of warm rain showers. Group 4 identifies heavy stratiform precipitation. The low latitudes exhibit distinct bimodal distributions of the normalized intercept parameter N-w, LWC, and D-0 and are found to have a clustering of points (group 5) with high rain rates, large N-w, and moderate D-0, a signature of robust warm rain processes. A distinct group associated with ice-based convection (group 6) emerges in the midlatitudes. Although all locations exhibit the same covariance of parameters associated with these groups, it is likely that the physical processes responsible for shaping the DSDs vary as a function of location. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434270600006 |
WOS关键词 | DUAL-POLARIZED RADAR ; MICROPHYSICS PARAMETERIZATION ; STRATIFORM RAINS ; DRAFT STRENGTH ; SQUALL LINE ; WARM POOL ; PART I ; RAINDROP ; PRECIPITATION ; DISDROMETER |
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/29542 |
专题 | 地球科学 |
作者单位 | 1.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 2.Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA |
推荐引用方式 GB/T 7714 | Dolan, B.,Fuchs, B.,Rutledge, S. A.,et al. Primary Modes of Global Drop Size Distributions[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(5):1453-1476. |
APA | Dolan, B.,Fuchs, B.,Rutledge, S. A.,Barnes, E. A.,&Thompson, E. J..(2018).Primary Modes of Global Drop Size Distributions.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(5),1453-1476. |
MLA | Dolan, B.,et al."Primary Modes of Global Drop Size Distributions".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.5(2018):1453-1476. |
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