MIL-HDBK-1003/8A
APPENDIX A (continued)
PART 3:
EARTH TEMPERATURES
The earth tempevatures (Te) to be used in the heat loss calculations are
listed below. The list presents the average earth temperature from 0 to 10
feet below the surface for the four seasons of the year and for the whole year
for the indicated locale. The temperatures were computed on the basis of the
method described in the 1965 ASHRAE technical paper entitled "Earth
Temperature and Thermal Diffusivity at Selected Stations in the United States"
by T. Kusuda and P. R. Achenback (in ASHRAE Transactions, Volume 71, Part 1,
p. 61, 1965) using the monthly average air temperatures published by the U.S.
Weather Bureau for the listed localities in the United States. Earth
temperatures are expressed in Fahrenheit degrees. AP refers to airport data,
CO to city office data, COOP to cooperative weather station data, and OBS to
observation station data. When data is not available for exact project
location, use nearest location shown in following table.
Location
Winter
Spring
Summer
Autumn
Annual
Alabama
Anniston AP
55
58
7O
67
63
Birmingham AP
54
58
71
68
63
Mobile AP
61
63
74
7l
67
Mobile CO
61
64
75
72
68
Montgomery AP
58
61
73
70
65
Montgomery CO
59
62
74
71
66
Arizona
Bisbee COOP
55
58
70
67
62
Flagstaff AP
35
39
54
50
45
Ft Huachuca
(proving ground)
55
58
71
68
63
Phoenix AP
60
64
79
75
69
Phoenix CO
61
65
80
76
70
Prescott AP
46
49
65
61
55
Tuscon AP
59
62
76
73
68
Winslow AP
45
49
65
61
55
Yuma AP
65
69
84
80
75
Arkansas
Fort Smith AP
52
46
72
68
62
Little Rock AP
53
57
72
68
62
Texarkana AP
56
60
74
71
65
70
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