Which is true of upper atmospheric circulation?
A) It refers to the winds in the thermosphere.
B) These winds are unrelated to surface weather patterns and of no consequence to the atmosphere's general circulation.
C) Middle and upper tropospheric circulation is an important component of the atmosphere's general circulation.
D) These winds flow principally from the east. in the mesosphere.

Question

Quizplus · Accepted Answer

Middle and upper tropospheric circulation is an important component of the atmosphere's general circulation, which plays a key role in driving surface weather patterns and climate.

Answer: A and D are both incorrect.
 Upper atmospheric circulation does not refer to winds in the thermosphere or mesosphere. These regions have very thin, almost non-existent atmospheres and do not have significant circulation patterns.

Which Is True of Upper Atmospheric Circulation