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Although many researchers believe the dominating climatic systems in Iran in the past cold and warm eras are similar to our contemporary era, but all believe that the their operating domain and their shares in supplying water resources in Iran have been under extensive changes and fluctuations. It is said that these fluctuations in our age are mostly due to human performance, and its consequences have already become weaker. In this paper, it has been tried to determine the contribution of Iran's atmospheric precipitation to Mediterranean systems - Caspian, Sudanese - Persian Gulf and Monsoon - Omani by means of analyzing the average rainfall data of Iran during a 50-year statistical period. The findings of this study, which are the result of a research project at Najafabad Islamic Azad University, show that: of the 415 billion cubic meters of precipitation, Iran has the highest moisture contribution for the Mediterranean-Caspian Sea system with 240 cubic meters. Then the contribution of the Sudanese-Persian Gulf system to 152 cubic meters, and only 22.5 cubic meters of these precipitation is related to humidity injected from the Sea of Oman and monsoon systems. Ups and downs in Iran not only have changed the distribution of atmospheric water resources in Iran, but also controlled the historical management of water resources in Iran. The heating of Iran's temperature in the next few decades would be assumed to be unaffected by the blue contribution of atmospheric atmospheric systems. It can be said with certainty that the capacity of natural water storage in Iran's territorial zone will be reduced to a one-thirds increase in temperature, and these changes will put civilian presence in central Iran at serious risk. [ABSTRACT FROM AUTHOR]

Although many researchers believe the dominating climatic systems in Iran in the past cold and warm eras are similar to our contemporary era, but all believe that the their operating domain and their shares in supplying water resources in Iran have been under extensive changes and fluctuations. It is said that these fluctuations in our age are mostly due to human performance, and its consequences have already become weaker. In this paper, it has been tried to determine the contribution of Iran's atmospheric precipitation to Mediterranean systems - Caspian, Sudanese - Persian Gulf and Monsoon - Omani by means of analyzing the average rainfall data of Iran during a 50-year statistical period. The findings of this study, which are the result of a research project at Najafabad Islamic Azad University, show that: of the 415 billion cubic meters of precipitation, Iran has the highest moisture contribution for the Mediterranean-Caspian Sea system with 240 cubic meters. Then the contribution of the Sudanese-Persian Gulf system to 152 cubic meters, and only 22.5 cubic meters of these precipitation is related to humidity injected from the Sea of Oman and monsoon systems. Ups and downs in Iran not only have changed the distribution of atmospheric water resources in Iran, but also controlled the historical management of water resources in Iran. The heating of Iran's temperature in the next few decades would be assumed to be unaffected by the blue contribution of atmospheric atmospheric systems. It can be said with certainty that the capacity of natural water storage in Iran's territorial zone will be reduced to a one-thirds increase in temperature, and these changes will put civilian presence in central Iran at serious risk. [ABSTRACT FROM AUTHOR]