Pertaining to Lab 3 Q14, why is the peak net radiation approximately the same on the two dates seen in figures 3-5 and 3-6?     The weather conditions must have been the same on those dates (i.e. clouds, pressure, temperature, etc.)     The data for both days must have been taken on surfaces with the same albedo      Botswana is right on the equator so it has very little variation throughout the year     The latent heat, sensible, heat, and soil fluxes when averaged together are about the same on both days     The sun angles are similar on both dates

Elements Of Electromagnetics
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ISBN:9780190698614
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Pertaining to Lab 3 Q14, why is the peak net radiation approximately the same on the two dates seen in figures 3-5 and 3-6?

   

The weather conditions must have been the same on those dates (i.e. clouds, pressure, temperature, etc.)

   

The data for both days must have been taken on surfaces with the same albedo 

   

Botswana is right on the equator so it has very little variation throughout the year

   

The latent heat, sensible, heat, and soil fluxes when averaged together are about the same on both days

   

The sun angles are similar on both dates

Surplus net radiation at the surface can be expended
in three general ways:
sensible heat flux to the atmosphere (energy
expended in heating the air at Earth's surface),
soil heat flux (energy expended in heating the
soil)
latent heat flux (energy used in evaporating
moisture from the surface).
Figures 3-5 and 3-6 show the net surface radiation
at Maun on March 19, 2000, and September 24, 2000,
respectively.
800-
Net radiation
600-
400-
200-
Soil flux
0-
Sensible
heat
-200-
-400
Energy (watts per square meter)
00:00
Latent
heat
- 00:90
12:00-
- 00:81
- 00:00
March 19
Figure 3-5. Net surface radiation-Maun, Botswana,
March 19, 2000.
Lab 3 The Surface Energy Budget
14. Why is the peak net radiation approximately the same
on the two dates?
15. How does the net surface radiation pattern differ
between the two dates during daylight hours?
800
600-
400-
200
Energy (watts per square meter)
0-
-200-
-400-
Latent
heat
- 00:00
- 00:90
12:00
Net radiationobb
Soil flux
- 00:8
Sensible
heat
- 00:00
September 24
Figure 3-6. Net surface radiation-Maun, Botswana,
September 24, 2000.
31
Transcribed Image Text:Surplus net radiation at the surface can be expended in three general ways: sensible heat flux to the atmosphere (energy expended in heating the air at Earth's surface), soil heat flux (energy expended in heating the soil) latent heat flux (energy used in evaporating moisture from the surface). Figures 3-5 and 3-6 show the net surface radiation at Maun on March 19, 2000, and September 24, 2000, respectively. 800- Net radiation 600- 400- 200- Soil flux 0- Sensible heat -200- -400 Energy (watts per square meter) 00:00 Latent heat - 00:90 12:00- - 00:81 - 00:00 March 19 Figure 3-5. Net surface radiation-Maun, Botswana, March 19, 2000. Lab 3 The Surface Energy Budget 14. Why is the peak net radiation approximately the same on the two dates? 15. How does the net surface radiation pattern differ between the two dates during daylight hours? 800 600- 400- 200 Energy (watts per square meter) 0- -200- -400- Latent heat - 00:00 - 00:90 12:00 Net radiationobb Soil flux - 00:8 Sensible heat - 00:00 September 24 Figure 3-6. Net surface radiation-Maun, Botswana, September 24, 2000. 31
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