#2 a) How many degrees warmer is the earth’s surface due to the (natural) greenh

Question

#2

a) How many degrees warmer is the earth’s surface due to the (natural) greenhouse effect compared to what it would be if we had no atmosphere? You can find this answer in the book or on line; it was also cited in class.

b) Explain this higher temperature (qualitatively) in terms of the transparency of our atmosphere in a particular wavelength range.

c) By what fraction have humans increased the carbon dioxide (CO2) in the atmosphere? This increase started with the Industrial Revolution, so for your starting concentration, find a value that goes back at least to 1800.

please show your answer in a,b,c

Explanation / Answer

A) If there were no natural greenhouse effect, the Earth’s average surface temperature would have been very cold at -18°C instead of 15°C which is most comfortable for us.

B) Light, some infrared, some ultraviolet, and microwaves, pass through the atmosphere and reaches the Earth's surface Which is responsible for the heating of the earth and maintain it's average temperature.

C) Global CO2 concentration has increased by more than 45% since the start of the Industrial Revolution. It has been increased from 280ppm in 1800s to almost 410ppm presently.

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