Meteorology_455: Cnet-1

Student Information

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Questions:

A. the page before the first book in the Bible.

B. dynamical strengthening of horizontal temperature gradients.

C. the movement of fronts around a low pressure center.

D. dynamical weakening of horizontal temperature gradients.

2) Frontogenesis can occur through

A. stretching deformation

B. shear deformation

C. both of the above

D. neither of the above

3) A pure deformation flow is one with

A. vorticity and no divergence

B. divergence and no vorticity

C. both vorticity and divergence

D. no vorticity and no divergence

4) Suppose we have a geostrophic flow described by "psi" = 10^(-3)yx , and a temperature gradient of dT/dy = -10 K/(100 km) . The temperature gradient is then changing at a rate D(dT/dy)/Dt = 10^(-8) K/(m-s) . [Note: Be careful with your units!]

5)[a] For stretching deformation, if there is a temperature gradient along the axis of , then [b] isotherms will concentrate along the axis of .

6) A jet entrance region is a location of flow .

7) At a jet entrance region, the horizontal flow

A. bends downward

B. decelerates

C. turns north

D. accelerates

E. stops

8) At a jet entrance region, the horizontal wind changes in order to maintain

A. thermal wind balance

B. heat balance

C. geostrophic balance

D. A. and B. together

E. A. and C. together

9) Moving along the jet axis, in the Northern Hemisphere, cyclonic vorticity increases on the north side of the jet. This is caused primarily by what term(s) in the vorticity equation?

A. horizontal convergence (stretching)

B. horizontal advection of relative vorticity

C. horizontal advection of planetary vorticity

D. all of the above

E. none of the above

10) The cellular (v,w) flow that develops in the jet entrance region is called a circulation.