Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-9451-2017 |
An A-train and MERRA view of cloud, thermodynamic, and dynamic variability within the subtropical marine boundary layer | |
Kahn, Brian H.1; Matheou, Georgios1; Yue, Qing1; Fauchez, Thomas2; Fetzer, Eric J.1; Lebsock, Matthew1; Martins, Joao3; Schreier, Mathias M.1; Suzuki, Kentaroh4; Teixeira, Joao1 | |
2017-08-07 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:15 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Portugal; Japan |
英文摘要 | The global-scale patterns and covariances of subtropical marine boundary layer (MBL) cloud fraction and spatial variability with atmospheric thermodynamic and dynamic fields remain poorly understood. We describe an approach that leverages coincident NASA A-train and the Modern Era Retrospective-Analysis for Research and Applications (MERRA) data to quantify the relationships in the subtropical MBL derived at the native pixel and grid resolution. A new method for observing four subtropical oceanic regions that capture transitions from stratocumulus to trade cumulus is demonstrated, where stratocumulus and cumulus regimes are determined from infrared-based thermodynamic phase. Visible radiances are normally distributed within stratocumulus and are increasingly skewed away from the coast, where trade cumulus dominates. Increases in MBL depth, wind speed, and effective radius (r(e)), and reductions in 700-1000 hPa moist static energy differences and 700 and 850 hPa vertical velocity correspond with increases in visible radiance skewness. We posit that a more robust representation of the cloudy MBL is obtained using visible radiance rather than retrievals of optical thickness that are limited to a smaller subset of cumulus. The method using the combined A-train and MERRA data set has demonstrated that an increase in r(e) within shallow cumulus is strongly related to higher MBL wind speeds that further correspond to increased precipitation occurrence according to CloudSat, previously demonstrated with surface observations. Hence, the combined data sets have the potential of adding global context to process-level understanding of the MBL. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407329400006 |
WOS关键词 | ATMOSPHERIC INFRARED SOUNDER ; LIQUID WATER PATH ; OPTICAL-THICKNESS ; EFFECTIVE RADIUS ; MODIS ; STRATOCUMULUS ; AIRS ; FEEDBACKS ; PRECIPITATION ; CIRCULATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/23924 |
专题 | 地球科学 |
作者单位 | 1.CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA; 2.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 3.Inst Portugues Mar & Atmosfera, Dept Meteorol & Geophys, Lisbon, Portugal; 4.Univ Tokyo, Atmosphere & Ocean Res Inst, Div Climate Syst Res, Kashiwa, Chiba, Japan |
推荐引用方式 GB/T 7714 | Kahn, Brian H.,Matheou, Georgios,Yue, Qing,et al. An A-train and MERRA view of cloud, thermodynamic, and dynamic variability within the subtropical marine boundary layer[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(15). |
APA | Kahn, Brian H..,Matheou, Georgios.,Yue, Qing.,Fauchez, Thomas.,Fetzer, Eric J..,...&Teixeira, Joao.(2017).An A-train and MERRA view of cloud, thermodynamic, and dynamic variability within the subtropical marine boundary layer.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(15). |
MLA | Kahn, Brian H.,et al."An A-train and MERRA view of cloud, thermodynamic, and dynamic variability within the subtropical marine boundary layer".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.15(2017). |
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