With reference to Green House Gases GHGs consider the following statements 1 Green House gases are a...........

Environment and Ecology Envirnment and Climate Change

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With reference to Green House Gases (GHGs), consider the following statements:

1. Green House gases are also called radiatively active gases as they absorb infrared radiation.

2. Under the process of greenhouse flux, earth radiates back energy to the atmosphere.

3. Atmospheric lifetime of Methane is much more than Chlorofluorocarbons.

Which of the above mentioned statements is/are not correct?

1 Only

2 and 3 Only

3 Only

All of the above

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Explanation:

GHGs are called radiatively active gases because they can absorb long wave infrared radiation.The outgoing long wave infrared radiation is absorbed by the GHGs. The atmosphere radiates back part of this energy to the earth. This downward flux of radiation is called as greenhouse flux. It keeps the earth warm.The atmospheric lifetime of CFC ranges from 45 years to 260 years. While that of Methane is about 12 years.