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DOI10.1175/JCLI-D-17-0317.1
Probability Distribution for the Visually Observed Fractional Cloud Cover over the Ocean
Aleksandrova, Marina1; Gulev, Sergey K.1,2; Belyaev, Konstantin1,3
2018-04-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2018
卷号31期号:8页码:3207-3232
文章类型Review
语种英语
国家Russia; Brazil
英文摘要

The authors suggest a three-parameter bounded distribution from the family of mixed gamma distributions for characterizing the probability density distributions of fractional total and low cloud cover over the global oceans. The authors derive both the continuous form of this distribution and its discrete counterpart, which can be directly applied to cloud cover reports. The distribution is applied to the cloud cover characteristics reported by voluntary observing ships (VOS) for the period from 1950 to 2011 after filtering nighttime observations with poor lunar illumination. The suggested distribution demonstrates a high goodness of fit to the data and good skill in capturing probability distributions with different shapes. The authors present seasonal climatologies of the parameters of the derived distribution for the chosen 60-yr period and demonstrate that applying the PDF-based concept to the analysis of cloud cover allows identification of areas where similar mean cloud amounts can be produced by probability distributions with very different shapes. The roles of the different parameters of the distribution in producing the observed cloud conditions in different regions of the World Ocean are discussed. The application of the derived probability distribution allows for accurate estimation of the percentiles of the distribution, which represent the probabilities of specific cloud conditions. These probabilities are presented for both total and low cloud cover, as well as for daytime and nighttime. The authors also discuss the applicability of the suggested distribution for the validation of different cloud cover data products over the globe and the prospects of additional applications.


英文关键词Climatology Cloud cover Clouds Statistical techniques
领域气候变化
收录类别SCI-E
WOS记录号WOS:000428694000014
WOS关键词NORTH-ATLANTIC OCEAN ; SURFACE WIND SPEEDS ; AIR-SEA FLUXES ; SOLAR-RADIATION ; PART II ; REANALYSIS PRODUCTS ; VOS OBSERVATIONS ; ARCTIC CLOUD ; CLIMATE SENSITIVITY ; EASTERN PACIFIC
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/19364
专题气候变化
作者单位1.Shirshov Inst Oceanol, Moscow, Russia;
2.Moscow MV Lomonosov State Univ, Moscow, Russia;
3.Univ Fed Bahia, Dept Math, Salvador, BA, Brazil
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GB/T 7714
Aleksandrova, Marina,Gulev, Sergey K.,Belyaev, Konstantin. Probability Distribution for the Visually Observed Fractional Cloud Cover over the Ocean[J]. JOURNAL OF CLIMATE,2018,31(8):3207-3232.
APA Aleksandrova, Marina,Gulev, Sergey K.,&Belyaev, Konstantin.(2018).Probability Distribution for the Visually Observed Fractional Cloud Cover over the Ocean.JOURNAL OF CLIMATE,31(8),3207-3232.
MLA Aleksandrova, Marina,et al."Probability Distribution for the Visually Observed Fractional Cloud Cover over the Ocean".JOURNAL OF CLIMATE 31.8(2018):3207-3232.
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