(3) Consider the 500mb geopotential height chart at 00Z 24 September 2013 shown below, then do the following: (a) Estimate the geostrophic wind at Greensboro (GSO-72317) and compare it to the actual wind. Is it a good approximation? "b) Base on the y-momentum equation below, estimate the flow acceleration in y direction: Dv/Dt. Is it consistent with the actual wind direction as shown in the chart? Dv + fu = - Dt dy

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