Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-16-0043.1 |
Droplet Concentration and Spectral Broadening in Southeast Pacific Stratocumulus Clouds | |
Snider, Jefferson R.; Leon, David; Wang, Zhien | |
2017-03-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Several airborne field experiments have been conducted to verify model descriptions of cloud droplet activation. Measurements of cloud condensation nuclei and updraft are inputs to a parcel model that predicts droplet concentration and droplet size distributions (spectra). Experiments conducted within cumulus clouds have yielded the most robust agreement between model and observation. Investigations of stratocumulus clouds are more varied, in part because of the difficulty of gauging the effects of entrainment and drizzle on droplet concentration and spectra. Airborne lidar is used here to supplement the approach used in prior studies of droplet activation in stratocumulus clouds. A model verification study was conducted using data acquired during the Southern Hemispheric VAMOS Ocean-Cloud-Aerosol-Land Study Regional Experiment. Consistency between observed and modeled droplet concentrations is achieved, but only after accounting for the effects of entrainment and drizzle on concentrations produced by droplet activation. In addition, predicted spectral dispersions are 74% of the measured dispersions following correction for instrument broadening. This result is consistent with the conjecture that differential activation (at cloud base) and internal mixing (i.e., mixing without entrainment) are important drivers of true spectral broadening. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399332300001 |
WOS关键词 | CONDENSATION NUCLEI ; SIZE DISTRIBUTIONS ; SPECTROMETER PROBE ; AEROSOL ACTIVATION ; LIQUID WATER ; PART I ; MICROPHYSICS ; AIRCRAFT ; SUPERSATURATION ; CLOSURE |
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/29614 |
专题 | 地球科学 |
作者单位 | Univ Wyoming, Dept Atmospher Sci, Laramie, WY 82071 USA |
推荐引用方式 GB/T 7714 | Snider, Jefferson R.,Leon, David,Wang, Zhien. Droplet Concentration and Spectral Broadening in Southeast Pacific Stratocumulus Clouds[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(3). |
APA | Snider, Jefferson R.,Leon, David,&Wang, Zhien.(2017).Droplet Concentration and Spectral Broadening in Southeast Pacific Stratocumulus Clouds.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(3). |
MLA | Snider, Jefferson R.,et al."Droplet Concentration and Spectral Broadening in Southeast Pacific Stratocumulus Clouds".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.3(2017). |
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