Question

roblem you will derive an equation for the QG streamfunction strophic secondary circulation. You should assume constant f da and that the geostrophic flow is two-dimensional (y2); specifically 6.4. In this ageostrophic seco an -Ue( t) only andsg(y.t) only. (a) Starting with geostrophic and hydrostatic balance, pof 0z show that the maintenance of thermal wind balance requires (b) Determine the left side of the result in (a) from the ug momentum equation. Dug fu Dtg Interpret the result physically energy equation. Interpret the result physically. the ageostrophic wind: va and wW. Express (c) Determine the right side of the result in (a) from the thermodynamic (d) Now use your results from (b) and (c) in (a), using a streamfunction for all streamfunction terms on the left side of the equation. (e) Assume that the right side of your result in (d) reaches a local minimum in the midtroposphere. Sketch the ageostrophic circulation streamlines in a y-z cross-section along with arrows showing va and w. DV anomalies One anomaly is

Answer 1

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