AVIA 2350

Vertical Air Motion Lab

Why a sinking layer of air settles down, and a rising one stirs up. Run it slowly and watch the top and bottom warm — or cool — at two different rates, and watch the ΔT gauge on the right fall or climb.

ALTITUDE
ALOFT
SURFACE
-39°C
-27°C
LESS STABLE
ΔT
12°

Temperature vs. time elapsed

Top of layer Base of layer
20° 0° -20° -40° START END
Press a RUN button — the amber line traces the top of the layer, the green line traces the base. Their slopes are the two warming/cooling rates.
TOP T-39°C
BASE T-27°C
ΔT (LAPSE)12°C
STATELESS STABLE
STANDBY — select RUN SUBSIDENCE or RUN ASCENT.