Exponential Analysis in Assessing the Contribution of Greenhouse Gases Emissions to Global Warming

M. Ya. Antonovskii

Several carbon cycle models listed in the IPCC materials are used for assessing the atmospheric CO2 response to various scenarios for the CO2 anthropogenic emission into the atmosphere. The same materials present the Green function expressions of these models in terms of this exponential approximation, i.e., in the form of a sum of exponents. The uncertainties that occur when the Green function is substituted by its exponential approximation are investigated. The reason of such an analysis is a classic conclusion that a general problem of the exponential approximation refers to the class of inconsistent problems.