What did a study of jet contrails undertaken after the grounding of commercial flights after the September 11,2001 terrorist attacks find?
A)The study found that contrails have a very limited effect on Earth's energy budget.
B)The study found that contrails reduce diurnal temperature ranges in regions with a high density aircraft.
C)The study found that contrails contribute more to cloud-albedo forcing than cloud-greenhouse forcing.
D)The study found that contrails are difficult to distinguish from natural cirrus clouds.

Question

Quizplus · Accepted Answer

The study found that contrails reduce diurnal temperature ranges in regions with a high density of aircraft, as the absence of contrails during the grounding period led to a noticeable increase in the temperature range.

What Did a Study of Jet Contrails Undertaken After the Grounding