Climate changes is part of the global changes that represents a global challenge of the world. There's a wide range of evidence which indicates our climate is warming: Increasing temperatures at the surface, above the surface, and in the depths of the ocean,changes in rainfall patterns,changes in nature, sea-level rise, melting glaciers, reduction in Arctic sea-ice, shrinking ice-sheets.
HADCM3 – is the second coupled atmosphere-ocean general circulation model (AOGCM) developed at the Hadley Centre in the United Kingdom and it was one of the major models used in the IPCC Third Assessment Report in 2001.