ملخص
Abstract: In this paper, the relationship between Carbon dioxide (CO2) and the Mediterranean Sea surface temperature has been analyzed using reliable data series available at the Surface Ocean CO2 Atlas (SOCAT). The results revealed direct relationship between the above two variables which means that the widely documented increase in the sea surface temperature might be due to the continuous increase CO2 concentration.in the Mediterranean sea water and on its surface resulting from chemical exchange between air and water. The predicted anomalies of sea surface temperature and inorganic carbon for the periods 2006-2055 and 2050-2099 have been calculated using the Coupled Model Inter-comparison Project Phase five (CMIP5) for the Representative Concentration Pathways Scenario (RCP8.5). The results showed a dramatic future increase in the concentration of inorganic carbon as well as sea surface temperature in the Mediterranean Sea. This increase in fact, will affect negatively the marine biological system as a result of the varied thermal and chemical characteristics of the Mediterranean sea and also will harm and reduce many types of marine organisms that are a source of livelihood and food for fishermen and consumers