The Earth's atmosphere consists of many greenhouse gases which absorbs & emits radiation coming from the sun from the sum & thus keeps our planet warm. In the absence of such gases, our planet would have been a frozen one. It is these gases that make the Earth's atmosphere congenial for sustaining life. The greenhouse gases are Water vapour, Carbon dioxide, Methane, Nitrous oxide & Ozone. But, human activities like deforestation & burning of fossil fuels are increasing the atmospheric concentration of these greenhouse gases which leads to a change (increase) in the average temperature of the Earth. The average surface temperature of the Earth has increased by 0.8 °C since the early 20th century. If the increase in these greenhouse gases over the coming years continues with the present rate, then there would be a considerable environmental, economic & social disruption, if adequate mitigation & adaptation measures are not implemented. The Carbon emission from various sectors constitute to about 72% of the total anthropogenic (human induced) greenhouse emissions. The various sectors that contribute towards carbon emission are land use, land use changes & deforestation; peat; power; agriculture; transportation; petroleum; & others in order of their importance. The transportation sector alone contributes 19.2% of carbon emission and has a potential to reduce emission by 4%, so the focus of the paper will be on impact on Climate Change due to Transportation sector.
