CCIS - Climate Change Information System

Each of the last three decades has been successively warmer at the Earth’s surface than any preceding decade since 1850. The globally averaged temperature data show a warming of 0.85 [0.65 to 1.06] °C over the period 1880 to 2012. IPCC Assessment Report 5 states that Global mean temperatures will continue to rise over the 21st century if greenhouse gas (GHG) emissions continue unabated and temperature change will not be regionally uniform;. It is virtually certain that, in most places, there will be more temperature extremes as global mean temperatures increase (IPCC 2014).

Changes in average rainfall in a warmer world will exhibit substantial spatial variation. Some regions will experience increases, other regions will experience decreases and yet others will not experience significant changes at all. There is high confidence that the contrast of annual mean precipitation between dry and wet regions and that the contrast between wet and dry seasons will increase over most of the globe as temperatures increase.

This portal contains district specific observed and future climate scenarios. IMD gridded data are used to depict the observed/past climate. IPCC scenarios are used to depict future climate scenarios of Tamil Nadu. Please select from the available options to begin query. The available data is not intended for commercial purposes. Please contact us if you have any questions or feedback.