2. Draw a force diagram similar to in problem 1, but near the ground in a place where the frictional force is important. Make sure that your frictional force opposes the direction of motion, the coriolis force is to the right of motion, and all forces add up to zero (are balanced).

3. Would you expect the wind to be more consistently in geostrophic balance over land, or over the ocean? Why? What different land characteristics might be associated with winds that are in geostrophic balance?

4. On the attatched surface chart, circle and label areas where the wind barbs are (approximately) in and out of geostrophic balance. Remember that these wind barbs give the tail of the arrow, to show which way the wind is coming from. Remember that the geostrophic wind is parallel to the isobars with highs to the right. Does your hypothesis in question 3 seem to hold true?