Class number 3/27 Jan 26, 2011 Density, buoyancy, p', vertical acceleration.

Scanned notes from Sil

Loose ends from last class:

Skew-T moisture distortion: (upper level dryness would look dry on WV imagery too)

Today's material:

Briefing

from Sil - interpretation of Doppler radial velocity

Density temperature: relative importance of T, qv, and qc components
Poor man's pseudo-buoyancy (parcel T excess) in s-h-h* diagrams

From buoyancy to vertical momentum dynamics: book stuff (continued from class 2)

The buoyancy "force" on a density anomaly
Buoyancy viewed as a vorticity source
Buoyancy and nonhydrostatic PGF "" " "
What is nonhydrostatic p'
p' in a density current a warm bubble a cloud in shear
Net upward force on a crenellated buoyant blob (in 2D): pdf

crenellated solutions by fft in matlab figure code1 code2

How to invert (entropy, qv, p) to get density (for buoyancy): HOMEWORK

Wyoming soundings site - skewT or text files

Open questions, assignments, and loose ends for next class:

Mazatlan q, PW example skewt

Testable questions about today's material:

* How many variables are needed to specify the state of moist air (assuming thermo. equilibrium)?
* Do these 3 variables suffice?

{p, T, theta} -- no (why?)
{q, RH, T} -- no (why?)
etc
{qtot, p, h} Under what conditions? (saturation)