On a 500-mb chart, shortwave troughs can be difficult to detect. However, one way to identify them is to find regions of ____, with which shortwaves align themselves.
a. maximum vorticity
b. wind shear
c. minimum vorticity
d. advection
e. absolute vorticity
Question 2
Cloud patterns in visible and infrared satellite images can be very helpful in identifying vorticity maxima in regions where clouds are present. In cloud-free areas, a type of infrared image called a(n) ____ image measures wavelengths of radiation emitted by water vapor. The swirling patterns of moisture clearly identify the position of vorticity centers.
a. infrared
b. gas
c. cloud
d. water vapor
e. Doppler
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