6. Locate points A and B in Figure 6 on the map in Figure 8. First, identify whi

Question

6. Locate points A and B in Figure 6 on the map in Figure 8. First, identify which point (A or B) received a greater amount of solar radiation. Second estimate the difference in 7. Given that at least some clouds were present at both points, explain why the values of incoming shortwave radiation are so different between these points. The infrared image in Figure 9 shows temperatures of around-55°C in central Oklahoma at 2000 UTC. Why are these values so much lower than the values earlier in the day at 1745 UTC? 8. 14

Explanation / Answer

6.Ans) In the image we can identify the points A and B at left side and right side of the image. Point A mentioned as a high amount of incoming solar radiation (short wave radiation) and part B mentioned as a low amount of incoming solar radiation. In the image Part A shows the range of incoming solar radiation is 950 to 1077W/m2 and Point B show the range from 64 to 256 W/m2. In these two points we can clearly observe the difference the amount of incoming solar radiation. Basically net amount incoming solar radiation to earth is depending upon the clear sky, cloudy sky and scatters the aerosols (dust particles) in the sky. Cloudy sky and more amounts of aerosols cannot transfer the solar radiation to the earth and solar radiation reflects to the back. Therefore on the earth incoming solar radiation is different at different parts.

7.Ans) In the two images of incoming solar radiation and infrared cloud imagery are obtained from different time steps. Whereas there is no clouds these signal shows the more amount of short wave radiation. But in the image identified the less amount of short wave radiation due to other particles of aerosols, snow and smog reflected the incoming solar radiation to the sky.

8.Ans) Obviously night time temperature are slowly decreasing and decreasing is vary from place to place because of topography of land, distribution of vegetation, urban places, soil moisture and main parameter is wind speed. Blowing of wind on land is controlling the solar radiation. May these parameters dominate that place on that time, therefore Oklahoma shows the less radiation compare than other places.

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