Contribution in global warming

CO2 (60%)

It is the most abundant green house gas produced by burning of fossil fuel, deforestation and change of land use. Its concentration in pre industry time was 280 and now it is 368 PPM.

CH4 (20%)

It is is product by freshwater wetlands, flooded rice field, biomass burning maintain in cattles, methanogen. Its concentration in pre industrial time was 700 ppb and now it is 1750ppb.

CFC (14%)

It is the most stable non flammable, nontoxic gas its source is legging of air conditioners refrigerators, evaporation of industrial solvent, aerosols and plastic foams.

N2O (6%)

Agriculture biomass burning industrial process burning of nitrogen rich fuel breakdown of nitrogen rich ferilizers, nitrate contaminated groundwater etc

Green House Effect

Atmosphere around Earth act as window glass pene that allows solar radiation to enter the Earth surface.

Contribution in global warming

It does not allow a long wave radiation emitted by earth to escape in space. These IR radiation are absorbed by green.

So the atmosphere radiate part of this energy back to earth called greenhouse flex.

These greenhouse gases keeps the atmosphere warm and fit for living called greenhouse effect.

Due to the presence of green house gases mean annual temperature of earth is — (15°C)

but in the absence of these gases it would drop sharply to -20°C.

The excessive increase in concentration of these gases would result in retaining more and more infra Red radiations.

It is called enhanced green house effect. This increase in global mean temperature is referred as global warming.

How to deal with global warming

  • Reducing green House gas mission by limiting the use of fossil fuels.
  • Increasing the forest area for photosynthetic utilisation of CO2.
  • Minimising the use of nitrogen ferilizers to reduce N2O.
  • Developing the substitutes for CFC.
  • Making people aware of the impacts of the impacts of climatic change.