Use the following 5 exercises to help understand how to locate air masses.
Need a quick review of air masses?
Exercise 1: Indicate where the dividing line is between cP and mT Airmasses
Across the top there are a series of buttons:
 | Erase last line = this button erases the latest line you've drawn; pressing twice will erase the last two lines, etc. |
| Colors = Use these to select the color of the isolines you draw |
| Show Solution = If you want to see how we analyzed the data, press this button |
Exercise 2: Indicate where the dividing line is between mP and cP Airmasses
Exercise 3: Indicate where the dividing line is between cold and a warm airmass
Exercise 4: Draw a blue line between the cold and a warm airmass
Exercise 5: Indicate where different Airmass Source Regions are found