1. Calculate the amount of net radiation (Q*) available on these two days.

SHOW YOUR WORK.

33 + 75 = 108 (33 + 75) * .8 = 86.4. 108-86.4 = 21.6

620 – 575 =  45

21.6 + 45 = 66.6 cal ^{cm-2 day-1}

2. On each day, what percentage of total insolation is comprised of diffuse (D) radiation?

{D/(S+D)}x 100 = %.

3. What atmospheric conditions likely explain the percentage differences between these two days? Interestingly, Day 2 has a higher absolute total of D. What does that suggest about the seasonality of Day 2?

4. Based only on surface albedo (r), what seasons of the year are being exhibited?

5. L¯ is less than L­ on Day 2, yet L¯ is greater than L­ on Day 1.  What does this tell us about the relative temperatures of the surface and the air immediately above ground?  Which day has an “inverted” lapse rate? Which day has a “normal” lapse rate?

DETAILED ASSIGNMENT

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