气候变化领域集成服务门户(CCPortal): On the distinctiveness of observed oceanic raindrop distributions

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DOI	10.5194/acp-19-6969-2019
	On the distinctiveness of observed oceanic raindrop distributions
	Duncan D.I.; Eriksson P.; Pfreundschuh S.; Klepp C.; Jones D.C.
发表日期	2019
ISSN	16807316
起始页码	6969
结束页码	6984
卷号	19 期号:10
英文摘要	Representation of the drop size distribution (DSD) of rainfall is a key element of characterizing precipitation in models and observations, with a functional form necessary to calculate the precipitation flux and the drops' interaction with radiation. With newly available oceanic disdrometer measurements, this study investigates the validity of commonly used DSDs, potentially useful a priori constraints for retrievals, and the impacts of DSD variability on radiative transfer. These data are also compared with leading satellite-based estimates over ocean, with the disdrometers observing a larger number of small drops and significantly more variability in number concentrations. This indicates that previous appraisals of raindrop variability over ocean may have been underestimates. Forward model errors due to DSD variability are shown to be significant for both active and passive sensors. The modified gamma distribution is found to be generally adequate to describe rain DSDs but may cause systematic errors for high-latitude or stratocumulus rain retrievals. Depending on the application, an exponential or generalized gamma function may be preferable for representing oceanic DSDs. An unsupervised classification algorithm finds a variety of DSD shapes that differ from commonly used DSDs but does not find a singular set that best describes the global variability. © 2019 Author(s).
语种	英语
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144382
作者单位	Department of Earth Space, and Environment, Chalmers University of Technology, Gothenburg, 412 96, Sweden; CliSAP/CEN, Meteorological Institute, Universität Hamburg, Hamburg, 20146, Germany; British Antarctic Survey, Cambridge, CB3 0ET, United Kingdom; European Centre for Medium-Range Weather Forecasts, Shinfield Park, Reading, RG2 9AX, United Kingdom
推荐引用方式 GB/T 7714	Duncan D.I.,Eriksson P.,Pfreundschuh S.,et al. On the distinctiveness of observed oceanic raindrop distributions[J],2019,19(10).
APA	Duncan D.I.,Eriksson P.,Pfreundschuh S.,Klepp C.,&Jones D.C..(2019).On the distinctiveness of observed oceanic raindrop distributions.Atmospheric Chemistry and Physics,19(10).
MLA	Duncan D.I.,et al."On the distinctiveness of observed oceanic raindrop distributions".Atmospheric Chemistry and Physics 19.10(2019).