Which of the three latitudes would receive the lowest insolation on 12/22? on th

Question

Which of the three latitudes would receive the lowest insolation on 12/22? on the chart below use the data from figure 16-4 to plot the average daily at the top of the atmosphere (in w/m^2) for the 22nd day of each month at the equator 45degree and 90degree n. Connect the values for each latitude with a labeled line (you may also use a red line for the equator, a green line for 45degree N. and a blue line for 90degree N). Alter completing the chart above, answer the following questions. Keep in mind that these data show the insolation at the top of the atmosphere-they take into account the angle of incidence of incoming radiation and the length of day. but ignore the effects of the atmosphere. During a year, which of the three latitudes experiences the least variation in average daily insolation at the lop of the atmosphere? Why?

Explanation / Answer

5) in the diagram above

a) the equator experience the least variation in insolation at the top of the atmsophere

b) reason : These least variation in insolation result only from the yearly changes in the altitude of the Sun above the horizon, as the duration of daylight at the equator is always 12 hours.

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