globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD028083
Scopus记录号: 2-s2.0-85052384991
论文题名:
Under What Conditions Can We Trust Retrieved Cloud Drop Concentrations in Broken Marine Stratocumulus?
作者: Zhu Y.; Rosenfeld D.; Li Z.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:16
起始页码: 8754
结束页码: 8767
语种: 英语
英文关键词: cloud drop concentrations ; cloud physics ; remote sensing
英文摘要: In this study, we show how to obtain more reliable satellite-retrieved cloud drop number concentrations (Nd) from Moderate Resolution Imaging Spectroradiometer (MODIS) standard cloud products. Nd is important as a fundamental cloud property that determines cloud albedo, precipitation-forming processes, cloud longevity, and fractional cover, all of which determine cloud radiative effects. Nd is determined by cloud base aerosols and updrafts. Satellite retrievals of Nd for marine stratocumulus clouds are performed based on the assumption of a nearly adiabatic cloud column. The retrievals, however, are fraught with problems that cause large biases (e.g., the retrieved Nd for partially filled cloudy pixels are less than one third of the retrieved Nd for the convective cores) and limit the usefulness of Nd, especially in broken cloud fields. The Nd of the brightest 10% of cloudy pixels are selected because the brightest clouds are the convective cores that most closely follow adiabatic parcels, a key assumption of our retrieval. It is shown that this criterion is representative of pixels that are also fully surrounded by cloudy pixels (Nd agreement within 5%). ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113241
Appears in Collections:气候减缓与适应

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作者单位: State Laboratory of Earth Surface Process and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Meteorological Institute of Shaanxi Province, Xi'an, China; Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel; Department of Atmospheric and Oceanic Science and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States

Recommended Citation:
Zhu Y.,Rosenfeld D.,Li Z.. Under What Conditions Can We Trust Retrieved Cloud Drop Concentrations in Broken Marine Stratocumulus?[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(16)
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