| Summary: | A heat transfer model for global warming was developed which included radiation transfer to the atmosphere and the earth. The model is based on the principles of heat transfer and well established engineering data and methods. Model results agree well with NASA data. From Hottel data, a method was developed for determining the emissivity of Carbon Dioxide and the emissivity of water vapor in the atmosphere as a function of concentration.The global warming conditions were determine for the Paris Limits, increases of 1.5° and 2 °C. The results show that Carbon Dioxide contributes 25% to the total temperature increase. Accounting for the reported accuracy in the emissivity of earth and the albedo, the most sensitivity solar parameters, the accuracy of the atmospheric temperature is outside the Paris Limits. The lease sensitivity solar parameter is the concentration of Carbon Dioxide. This is because at 300 ppm, the emissivity of CO2 is close to its maximum value. Carbon Dioxide is a major contributor to global temperature. However, since the emissivity of CO2 is close to its limit, additional increase in concentration will produce a small increase in atmospheric temperature.
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