Atmospheric Moisture

1. Atmospheric Moisture Tutorial Start

2. SALR DALR ELR ALR Environmental Lapse Rate Temperature of a parcel of air Dew Point Temperature Environmental lapse rate, air parcel temperature at ground level, dew point temperature are the only readings that can be varied in this model. End

3. SALR DALR ELR ALR For each 100m increase in height, there is a decrease in temperature at the environmental lapse rate. End

4. SALR DALR ELR ALR Unsaturated air cools at dry adiabatic lapse rate (DALR) while saturated air cools at saturated adiabatic lapse rate (SALR). End

5. SALR DALR ELR ALR If the upward movement of air does not lead to condensation, the air parcel temperature will fall at the DALR. End

6. SALR DALR ELR ALR If dew point temperature is reached, condensation occurs. The air cools at a lower rate (SALR) because of the release of latent heat. End

7. SALR DALR ELR ALR Now, let’s change the temperature of the air parcel at ground level from 8 to 12. End

8. SALR DALR DALR ELR ELR ALR ALR Since the air parcel temperature is always higher than the dew point temperature, the air cools at dry adiabatic lapse rate. End

9. DALR ELR ALR Now, we change it to 8 and notice the changes. End

10. SALR DALR DALR ELR ELR ALR ALR This time, the air parcel temperatures above 700m are lower than dew point temperatures, and the air cools at the saturated adiabatic lapse rate. End

11. SALR DALR ELR ALR Unstable air can bring about rain and snow. End

12. SALR DALR ELR ALR That’s the end of this tutorial. End