Global warming - some facts and figures Topic: Gloabal warming

Category Climate system
Group GSI.IR
Location International Geological Congress,oslo 2008
Source www.۳۳igc.org
Holding Date 18 August 2008

Global warming - some facts and figures Topic: Gloabal warming

Purkait, Barendra
Geological survey of India, India


The paper deals with the global warming phenomenon with some facts and figures. Global warming is now a scientific fact established by unanimous decision of world’s top weather scientists led by UN’s Inter-governmental Panel of Climate Change (IPCC). The average temperature of the earth is increasing at the rate of 0.60C per year causing melting of glaciers, frequent storms and hurricanes, triggering floods, changing rainfall and weather patterns. The cause of global warming has been attributed to the emission of green-house gases beyond the permissible limit. Green-house gases are those gases which can trap infra-red radiation given by the Sun to provide green-house effect leading to heating up of the environment. One of the green-house gases is CO2. Water vapor and ozone also has the ability to trap the infra-red radiation, so they are also called green-house gases. Moreover, CO2 contributes largely to the green-house effect. Besides CO2, pollutants such as N2O, CH4 and CCl3F, which have strong infrared absorption, could also influence the mean global temperature. The greenhouse effect which is a natural feature of the earth’s environment keeps our planet’s surface at a warm average temperature of 150C but now plays a vital role in increasing the heat of the earth’s troposphere. Some measures have been suggested to cut down the emission of green house gases with a wish list as alternative suggestions to combat the situation.
Key words: Global warming, Green house gases, Green house effect, CO2 emission, IPCC.