Vertical Structure and the Thermal Wind

Reading, Ch. 12 of N-G Online Wallace and Hobbs 7.2.7

Where you heat mattersImpacts of heating

on stability in trop vs. strat

Stability and Isentropes

Shear (note: not Sheer)

Two kinds of vertical shear Examples (board)

Vertical shear of geostrophic wind has a special name _______________________

Thermal Wind Equation Take vertical derivative of Vg, use hypsometric (see

derivation in text) The link between pressure/height/wind and temperature. Doesn't “blow”, but if it did, it would with colder

temperatures (smaller thicknesses) to left, and harder with more temperature contrast!

Explains a lot, like the existence of the polar jet!

Thermal Wind Example

Cold and Warm Core

Thought Experiment, Low center which gets more intense with height (stronger winds)

Multi Color Dry Erase How about the reverse? What is this example of?

Which is it?

Backing

Veering - WAA

To the Charts/Skew-Ts