Global climate change; A discussion of major uncertainties

This paper addresses the substantial uncertainties that exist regarding the scientific aspects and modeling of potential greenhouse gas-induced climate change. Uncertainties in the identification of temperature trends in the historical record, the quantification of future emissions and concentrations, and the prediction of potential climate change are examined. These uncertainties make it impossible at this time to produce reliable predictions of future climate change, due to increased greenhouse gas emissions, for use in developing policy options and response strategies.