Geoscience Reference
In-Depth Information
600
Manaus March 23 (forest)
500
Solar
Net solar
Net
400
300
200
100
0
0
6
12
Time (hrs)
18
24
−
100
All-day average values
Solar (W m
−
2
)
Net Solar (W m
−
2
)
Longwave (W m
−
2
)
Net (W m
−
2
)
175
154
−
15
139
600
Manaus March 23 (pasture)
500
Solar
Net solar
Net
400
300
200
100
0
0
6
12
18
24
−
100
Time (hrs)
All-day average values
Solar (W m
−
2
)
Net solar (W m
−
2
)
Longwave (W m
−
2
)
Net (W m
−
2
)
175
135
−
15
120
Figure 26.7
Diurnal variation
in all-day average radiation
fluxes calculated in 2(g).
(f ) Had the farmer neglected soil heat flux he would have estimated greater
available energy during the day when evaporation is the dominant flux,
and less at night when sensible heat is the dominant flux. The net effect
would have been to overestimate the all-day average evaporation flux.
