1. Questions about the PBL 1.What questions should we ask? 2.What are focus characteristics? 3.How would you try to answer these questions in observations? 4.That is, what would be a good observing program?

2. Questions about the PBL 1.What questions should we ask? What is the PBL height? How does the PBL change with yearly, daily, etc. cycles? Do sea breezes affect the PBL? Does elevation affect the PBL? How do weather systems affect the PBL? Does the PBL depth change with latitude? Depth of component layers? What’s going on in the entrainment layer? Eddy size/frequency/magnitude?

3. Questions about the PBL 2.What are focus characteristics? Height or depth of PBL, inversion Degree of mixing Strength of turbulence Temperature vs. z Moisture vs z. Momentum vs z.

4. 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? Soundings (wx balloons, dropsonde, tall towers, airplanes, radar, wind profiler) Pressure sensor, anemometer, thermometer, hygrometer Visual plumes