|
ALASKA
/ Bethel
Latitude (N): 60.78
Longitude
(W): 161.80
Elevation (feet): 151
Annual Precipitation (inches): 16
Annual heating degree days (base 65 deg. F): 13,330
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
26 deg.
|
48 deg.
|
27 deg.
|
3 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
2.5 |
4.8 |
2.2 |
0.2 |
|
BTU/ft2
|
793 |
1,523 |
698 |
63 |
| On
vertical surface |
|
kWh/m2
|
4.2 |
3.0 |
2.5 |
1.1 |
|
BTU/ft2
|
1,332 |
952 |
793 |
349 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
-5 |
42 |
8 |
2 |
| Daily
Max. - Degrees F |
21 |
59 |
52 |
15 |
| Wind
Speed - miles/hour |
14.1 |
11.2 |
11.6 |
14.3 |
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