This study documents multidecadal variations in low-level, upper-level, and total cloud cover over land and ocean independently obtained from surface synoptic observations and from satellite data produced by the International Satellite Cloud Climatology Project. Substantial agreement exists between global mean time series of surfaceand satellite-observed upper-level cloud cover, indicating that...

The paper analyzes the influence of atmospheric circulation on cloudiness and cloud types during July August 2016 in Petuniabukta Svalbard-Lufthavn. For meteorological parameters, basic statistical measures were calculated average diurnal patterns analyzed. Taking data from reanalysis (NCEP/NCAR-The National Centers for Atmospheric Prediction/The Center Research) regarding mean sea-level pressu...

This work concerns the 10? North, 20? North African band. Area renowned for having some of poorest countries in world. It is also home to Sahelian strip and part Sahara. The this zone have a relatively low electrification rate compared enlightened country. To solve problem, these want turn renewable energies such as photovoltaics (renewable energy obtained through solar radiation). Therefore, u...

The influence of clouds on Earth ́s radiation balance is a key component of the atmospheric system. Therefore, the determination of cloud cover is an important activity traditionally performed by human observations and broadcasted by meteorological services observers in Synop and Metar reports. However, human observations are subject to large errors of estimation, and their temporal resolution i...