الفهرس 
Cover EnglishOnly 14 pages are availabe for public view
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Abstract
Climate change is a serious and urgent issue. The Earth has already wormed by 0.7oC since around the year 1900 and is committed to further warming over coming decades simply due to past emissions. On current trends, average global temperatures could rise by 2-3oC within the next fifty years or so, with several degrees more in the pipeline by the end of the century if emissions continue to grow Future climate change will affect water supply, food production, human health, availability of land and ecosystem The present study focus on some green house gases GHG such as Co2, NO2, N2O, Nox, CH4 and water vapor emissions, also with SO2 emissions to the atmosphere. also, study GHGs induced climate change (CC) as a global phenomenon which affects many activities as it affects the agriculture sector. also, Detection and analyzing the GHGs emission trends then find the regression equations for those GHGs to predict their emissions through the current century. Predict the global and local change in temperature & sea level implication using emission scenarios of GHGs and sulpher dioxide through MAGICC and SCENGEN model. Also predict Egypt annual mean surface air temperature and sea level rise from the evaluated global map in SENGEN maps. Study the potential impact of climate change on wheat crop production and water consumptive use was carried out in the present study. CERES-wheat model, embedded in the Decision Support System for Agrotechnology Transfer (DSSAT 3.5) was used for the crop simulations with current and possible future management practices. Equilibrium doubled CO2 climate change scenarios were derived from the Canadian Climate Center (CCCM) and the Geophysical Fluid Dynamic Laboratory (GFD 3) General Circulation Models (GCMs). These scenarios predict consistent increases in air temperature, slight increases in solar radiation and precipitation changes that will happened in the future. The Calibration and validation test was carried out in the present study. Simulation of wheat yield was carried out on data covering to years under the normal weather conditions and climate change conditions. The response of wheat productivity and water consumption to different sowing dates, irrigation water amounts and skipping irrigations at different growth stages under climate change conditions (MAGICC/SCENGEN and GCMs) were studied. A number of adaptation strategies are suggested here. Results of simulation studies indicate that wheat grain yield was increased under high temperature of +1.5oC about 3.2% as compared with current climate. On the other hand, results of GCMs studies (+3.5oC) indicate that the two considered climate change scenarios resulted in simulated decrease in grain yield by 10% as compared with that productivity under current conditions. Results of adaptation strategies indicate that wheat plants have to be sown between 1st and 15th of November in Middle Egypt to reduce unfavorable effects of climate change on wheat production under climate change conditions (+3.5oC) and to increase the benefit associated with future climate (+1.5oC).