What is Adiabatic Lapse Rate? 20 10 20 20 30 4040 50 60
Lapse Rate: dT/dz T- temperature z altitude
Convection The temperature profile of the atmosphere is a result of an interaction between radiation and convection. Radiation
Air cools, becomes more dense, sinks Air warms, becomes less dense, rises Cool air Hot land (land heats up quickly) Cool sea However, when air is hot, it tends to expand, which lowers its density. Thus, hot air tends to rise and transfer heat upward. This is the process of Convection.
When a parcel of air expands, it pushes on the air around it. Since the parcel does work but gains no heat, it loses internal energy so that its temperature decreases. The process of expanding and contracting without exchanging heat is an adiabatic process. COLD MOIST AIR WARM MOIST AIR
Adiabatic Lapse Rate Dry Adiabatic Lapse Rate Moist Adiabatic Lapse Rate