- consider the diagram to the right, notice that:
- T
_{up}< T_{sp}< T_{e}- where T
_{up}is the temperature of an unsaturated parcel = 0°C - T
_{sp}= temperature of a saturated parcel = 10°C - T
_{e}= environmental temperature = 20°C.
- where T
- generally, notice that T
_{e}is always larger than T_{sp}and T_{up}at any level - Hence, an unsaturated or saturated parcel will always be cooler than the environment and will sink back down to the ground
- This is an example of
*absolute stability* - The condition for absolute
stability is:
**G**_{d}**>****G**_{m}**>****G**_{e}
- G
_{d}is the*dry adiabatic lapse rate*(10°C km^{-1}) - G
_{m}is the*moist adiabatic lapse rate*(6°C km^{-1}) - G
_{e}is the*environmental lapse rate*(variable - 0°C km^{-1}in this case)
Q: How would you characterize the stability of an inversion layer? |