DETECTION

DETECTION

The best way to see if global warming and the are associated is to use to simulate the likely climatic effects of the changing atmospheric composition, and to compare the results with observations. Such models have significantly increased confidence in the belief that current global warming is indeed due to pollution.

Whilst changes in the amount of sunlight received by the Earth may explain some of the short-term climate variability during the 20^th century, in light of the most recent evidence, and taking into account the remaining uncertainties, most of the observed warming in the last 50 years is likely to have been due to the increase in greenhouse gas concentrations.

The word "detection" by climate scientists has been used to refer to the identification of the significant change in climate during recent times and its association with the due to man-made greenhouse gas Although a global warming has taken place during the we need to be sure that mankind, rather than some natural process, is responsible for it, before committing substantial resources towards tackling the problem.