Question

Ben Santer showed that if atmospheric temperature increases are due to the sun then it is stratosphere (upper layer) that should show the increase in temperature, but his data shows that the current increases in global temperature are in the troposphere (lower layer).

T or F

With reference to the above question, the increase in temperature in the troposphere especially within the last 75 years is primarily due to

the sun

random fluctuations in temperature

events unrelated to human activity

increases in CO2 levels by humans burning fossil fuels

Answer 1

The answer for the first question is ---- True.

Explanation :

As per Ben Santer data, tropospheric warming is on higher side from the past 20 years.

Satellite microwave sounders have monitored the microwave emissions of oxygen molecules based on the temperature which showed there is increase in temperature in troposphere over the past 2 decades. This was due to volcanic eruptions in early 21 st century along with human activity which included pollution.

The answer to the second question is ---- increase in CO2 levels by humans burning fossil fuels.

There is significant increase in the temperature levels in troposphere as compared to the upper layers of the earth. This is mainly due to the human activity. There is use of fossil fuels by humans which creates pollution and increase the atmospheric temperature and on the long run this has resulted in global warming and climatic changes.

Thank you.