The detection of climate change due to the enhanced greenhouse effect

The greenhouse effectis accepted as an undisputed fact from both theoretical and observational considerations. In Earth's atmosphere, the primary greenhousegas is water vapor. The specific concern today is that increasing concentrations of anthropogenically introduced greenhousegases will, sooner or later, irreversibly alter the climate of Earth. Detecting climate change has been complicated by uncertainties in historical observationsand measurements. Thus, the primary concern for the GEDEX project is how can climate change and enhanced greenhouse effectsbe unambiguously detected and quantified. Specifically examined are the areas of: Earth surface temperature; the free atmosphere (850 millibars and above); space-based measurements; measurement uncertainties; and modeling the observed temperature record.