الفهرس 
Chapter 1Only 14 pages are availabe for public view
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Abstract
This study discus the effect of some atmospheric factors on solar radiation at New Demietta area, where this data collected depend on different atmospheric parameter like Temperature, Relaive Humidity, Pressure, Rain, Cloud, and Amount of sunshine during period from 1/1/2003 to 31/12/2004. from the data of cloud cover we can estimate global radiation on the area with maximum of error 8% in January where sky is almost over cast. Predicated global solar radiation in New Demietta by using the aid of sunshine duration (n/N) may provide very good estimated to solar radiation. The physical parameterization of Angstrom coefficients is very sensitive to cloud cover amount, cloud transmissivity, ground albedo and atmospheric backscattering Albedo. GCM outputs from climate change indicates some changes as in Temperature and Vapour pressure at New Demietta. The weather in New Damietta is different from Old one in bases of the following:Temperature at New Demietta is less than Old one by at least one degree allover the year.It was found that Relative Humidity at New Damietta is also less than Old one this may be attributed to the location effects. There is slight increase in wind speed at New Demietta allover the year, this increase is associated with some changes in wind direction. GCM out puts indicates some changes as increase in temperature and vapour pressure at New and Old Damietta.This also should effect on comfort index, as September month on it some people partially feel uncomfortable to month all people feel totally uncomfortable in New Damietta. And similarly in Old Demietta June will be convert from month partially feel uncomfortable to month totally uncomfortable.