DOI: 10.1016/j.atmosres.2017.08.021
Scopus记录号: 2-s2.0-85028515773
论文题名: On the intra-annual variation of cloudiness over the Mediterranean region
作者: Ioannidis E. ; Lolis C.J. ; Papadimas C.D. ; Hatzianastassiou N. ; Bartzokas A.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 208 起始页码: 246
结束页码: 256
语种: 英语
英文关键词: Cloudiness in the Mediterranean
; ECA&D
; Factor analysis
; Intra-annual variability
; MODIS
; NCEP/NCAR reanalysis
Scopus关键词: Factor analysis
; Image reconstruction
; Multivariant analysis
; Radiometers
; Satellite imagery
; Statistical methods
; Cloudiness in the Mediterranean
; Dimensionality reduction
; Intra-annual variability
; Moderate resolution imaging spectroradiometer
; MODIS
; Reanalysis
; Statistical methodologies
; Temperature and humidities
; Clouds
; annual variation
; cloud cover
; data set
; decadal variation
; factor analysis
; MODIS
; multivariate analysis
; seasonal variation
; Black Sea
; Mediterranean Sea
英文摘要: The seasonal variability of cloudiness in the Mediterranean region is studied, through the examination of the mean day-to-day intra-annual variation of gridded NCEP/NCAR total cloud cover for the period 1948–2014. A dimensionality reduction process is followed by using a multivariate statistical methodology and three main modes of seasonal variation are found. The first mode is characterized by a winter maximum and a summer minimum and prevails mainly over the Mediterranean and Black Sea areas; a weak see-saw teleconnection over the Alps represents the opposite intra-annual variation. The second mode presents maxima in early autumn and late spring and minima in late summer and winter and prevails over the SW Europe and NW Africa inland regions. The third mode shows a maximum in June and a minimum in October and prevails over the eastern part of central Europe. The main characteristics of these modes are attributed to the seasonal variation of: i) the temperature and humidity of the lower and the middle troposphere affecting static stability and ii) the intensity and the position of the main circulation systems affecting the region, as for example the Azores subtropical anticyclone and the Mediterranean depressions. The examination of inter-decadal changes in the seasonal variation of cloud cover in the above core regions reveals a long-term decrease of cloudiness during the 66-year period 1948–2014. A comparison with contemporary satellite MODerate resolution Imaging Spectroradiometer (MODIS) and surface based European Climate Assessment & Dataset (ECA&D) station cloud cover data is carried out for the above core regions, evidencing a similarity among the data sets as to their seasonal variability, which supports the validity of the NCEP/NCAR reanalysis cloud cover results. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108873
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Laboratory of Meteorology, Department of Physics, University of Ioannina, Ioannina, 45110, Greece
Recommended Citation:
Ioannidis E.,Lolis C.J.,Papadimas C.D.,et al. On the intra-annual variation of cloudiness over the Mediterranean region[J]. Atmospheric Research,2018-01-01,208