1. Questions about the PBL
What questions should we ask?
What are focus characteristics?
How would you try to answer these questions in observations?
That is, what would be a good observing program?

2. A PBL Definition: ”We can define the boundary layer as that part of the troposphere that is directly influenced by the earth’s surface, and responds to surface forcings with a time scale of about an hour or less” (Stull, Boundary Layer Meteorology)

6. Questions about the PBL
What questions should we ask?

7. Questions about the PBL
2. What are focus characteristics?

8. Questions about the PBL
3. How would you try to answer these questions in observations?
4. That is, what would be a good observing program?