Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028867 |
Characteristics of Optically Thin Coastal Florida Cumuli Derived From Surface-Based Lidar Measurements | |
Delgadillo, Rodrigo1,2; Voss, Kenneth J.1; Zuidema, Paquita2 | |
2018-09-27 | |
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:18页码:10591-10605 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The optical depths and sizes of optically thin passive shallow cumuli are characterized with a micropulse lidar. The measurements are from a coastal south Florida location spanning a 10-week synoptically suppressed winter time period with almost no upper-level clouds present. Clouds are distinguished from aerosol through visual comparison to zenith-viewing time-lapse camera images, establishing an instrument-specific particle backscatter coefficient threshold. Sun photometers provide a continuous independent aerosol optical depth estimate applied within the lidar retrieval of cloud optical depth. The focus is on clouds that do not attenuate the lidar signal. Clouds with optical depths less than one constitute more than 13% of the sampled data set, with decreasing optical depths occurring more frequently. Most of the clouds are less than 60m thick and are located below 1km. The optically thin regions occur most frequently in individual 15-s samples, corresponding to a horizontal width of less than 100m, with occasional stratiform segments extending up to 2km. Many segments border optically thicker regions, but some are self-contained, reflecting small-scale humidity variations near-saturation. To our knowledge, this study is the first to apply micropulse lidar data toward characterizing these low, shallow, broken clouds, too small for robust characterization from space but whose ubiquitiousness renders them radiatively important. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447807300032 |
WOS关键词 | TRADE-WIND CUMULI ; CLOUD TYPE ; RADIATIVE IMPACTS ; TRANSITION-ZONE ; AEROSOLS ; SIGNALS ; INSTRUMENTS ; SCATTERING ; RETRIEVAL ; SENSORS |
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/32475 |
专题 | 气候变化 |
作者单位 | 1.Univ Miami, Dept Phys, Coral Gables, FL 33124 USA; 2.Univ Miami, Dept Atmospher Sci, Rosenstiel Sch Marine & Atmospher Sci, Coral Gables, FL 33124 USA |
推荐引用方式 GB/T 7714 | Delgadillo, Rodrigo,Voss, Kenneth J.,Zuidema, Paquita. Characteristics of Optically Thin Coastal Florida Cumuli Derived From Surface-Based Lidar Measurements[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(18):10591-10605. |
APA | Delgadillo, Rodrigo,Voss, Kenneth J.,&Zuidema, Paquita.(2018).Characteristics of Optically Thin Coastal Florida Cumuli Derived From Surface-Based Lidar Measurements.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(18),10591-10605. |
MLA | Delgadillo, Rodrigo,et al."Characteristics of Optically Thin Coastal Florida Cumuli Derived From Surface-Based Lidar Measurements".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.18(2018):10591-10605. |
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