What do you know about the
Wet Adiabatic Lapse rate?
-
Less
than dry adiabatic lapse rate
The more it slants = greater lapse rate
Lapse rate = Rate of cooling
What’s
the difference between the Dry and Wet Adiabatic Lapse Rate?
-
Unsaturated
à reaches LCL
à Saturated
- Latent “Hidden” heat - The heat either released or
absorbed as a result of a change of state.
-
When
a cloud forms….
o
The
water vapor reaches the LCL à Temperature decreases à It’s doing work à slows the rate of cooling
-
Water
vapor condenses à latent heat is released
Mixing ratio (w) - A measurement of the amount of
water vapor in the air of a given sized quantity of dry air. Grams of vapor per
kilogram of dry air.
W = Water vapor in the box
- Dewpoint Lapse Rate = As it goes up it
decreases = 2 deg C / km
-
Dew point (Td) - The temperature to which air must cool at constant pressure in
order for air to reach saturation (commonly dew to form); indicates moisture
content.
