Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Consider the following statements about radiative forcing

Which of the above is/are correct?

• A.
  1 only
• B.
  2 only
• C.
  1 and 2 only
• D.
  None of these

Answer 1

The correct option is C

1 and 2 only
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> “Positive forcing” is exerted by climatic factors that contribute to the warming of Earth’s surface, whereas “negative forcing” is exerted by factors that cool Earth’s surface.
In general, radiative forcing is positive when GHG concentrations increase.