Annual Soil Swing, and Phase Constants for U.S. Cities*
Note: The 'Phase Constant' represents the coldest day of the year.
|
State |
City |
Tm (oC) |
As(oC) |
To(Days) |
|
|
|
|
|
AL |
Birmingham |
18.3 |
10.6 |
31 |
|
Montgomery |
19.4 |
10.0 |
31 |
|
|
|
|
|
AZ |
Phoenix |
22.8 |
12.8 |
33 |
|
Tucson |
21.1 |
10.0 |
34 |
|
|
|
|
|
AR |
Little
Rock |
17.8 |
11.7 |
32 |
|
|
|
|
|
CA |
Los
Angeles |
17.8 |
3.9 |
54 |
|
Merced |
20.0 |
13.9 |
33 |
|
San Diego |
17.8 |
3.9 |
54 |
|
|
|
|
|
CO |
Colorado
Springs |
10.6 |
11.7 |
36 |
|
Denver |
11.1 |
12.2 |
37 |
|
Grand
Junction |
12.8 |
13.9 |
32 |
|
|
|
|
|
DC |
Washington |
13.9 |
12.2 |
36 |
|
|
|
|
|
FL |
Appalachico. |
21.1 |
8.3 |
36 |
|
Jacksonville |
21.7 |
7.8 |
32 |
|
|
|
|
|
GA |
Atlanta |
16.7 |
10.6 |
32 |
|
Augusta |
18.3 |
10.0 |
30 |
|
Macon |
19.4 |
9.4 |
33 |
|
|
|
|
|
ID |
Boise |
11.7 |
11.7 |
34 |
|
Idaho
Falls |
7.8 |
12.8 |
34 |
|
|
|
|
|
IL |
Chicago |
10.6 |
13.9 |
37 |
|
E. St.
Louis |
13.9 |
13.3 |
34 |
|
Urbana |
11.7 |
14.4 |
35 |
|
|
|
|
|
State |
City |
Tm (oC) |
As(oC) |
To(Days) |
|
|
|
|
|
IN |
Fort
Wayne |
11.7 |
13.3 |
35 |
|
Indianapolis |
12.8 |
13.3 |
34 |
|
South
Bend |
11.1 |
13.9 |
37 |
|
|
|
|
|
IA |
Des
Moines |
11.1 |
15.6 |
35 |
|
Sioux
City |
10.6 |
16.1 |
34 |
|
|
|
|
|
KS |
Dodge
City |
13.9 |
13.9 |
35 |
|
Topeka |
13.3 |
14.4 |
35 |
|
|
|
|
|
KY |
Louisville |
15.6 |
12.2 |
33 |
|
|
|
|
|
LA |
Lake
Charles |
21.1 |
8.9 |
32 |
|
New
Orleans |
21.1 |
8.3 |
32 |
|
Shreveport |
18.9 |
10.6 |
32 |
|
|
|
|
|
MA |
Portland |
8.9 |
12.2 |
39 |
|
|
|
|
|
MS |
Plymouth |
10.6 |
11.7 |
43 |
|
|
|
|
|
MI |
Battle
Creek |
10.0 |
13.3 |
35 |
|
Detroit |
10.0 |
13.9 |
39 |
|
Sau St.
Marie |
5.6 |
14.4 |
40 |
|
|
|
|
|
MN |
Duluth |
5.0 |
15.6 |
37 |
|
Int.
Falls |
3.9 |
17.2 |
34 |
|
Minneapolis |
8.3 |
16.1 |
35 |
|
|
|
|
|
MS |
Biloxi |
21.1 |
9.4 |
32 |
|
Columbus |
18.3 |
10.6 |
32 |
|
Jackson |
19.4 |
10.0 |
31 |
|
|
|
|
|
MO |
Columbia |
13.9 |
13.3 |
35 |
|
Kansas
City |
14.4 |
14.4 |
35 |
|
Springfield |
14.4 |
12.8 |
34 |
|
|
|
|
|
State |
City |
Tm (oC) |
As(oC) |
To(Days) |
|
|
|
|
|
MT |
Billings |
9.4 |
12.8 |
37 |
|
Great
Falls |
8.9 |
12.8 |
36 |
|
Missoula |
7.8 |
11.7 |
32 |
|
|
|
|
|
NB |
Grand
Junction |
11.1 |
15.0 |
35 |
|
Lincoln |
11.7 |
15.6 |
34 |
|
N. Platte |
10.6 |
14.4 |
35 |
|
|
|
|
|
NV |
Ely |
8.3 |
12.2 |
35 |
|
Las Vegas |
20.6 |
12.8 |
32 |
|
Winnemucca |
11.1 |
12.2 |
33 |
|
|
|
|
|
NJ |
Trenton |
12.8 |
12.2 |
38 |
|
|
|
|
|
NM |
Albuquerque |
15.0 |
12.2 |
31 |
|
Roswell |
17.2 |
12.2 |
30 |
|
|
|
|
|
NY |
Albany |
10.0 |
13.9 |
38 |
|
Binghamton |
8.9 |
13.3 |
38 |
|
Niagara
Falls |
10.0 |
13.3 |
24 |
|
Syracuse |
10.0 |
13.3 |
38 |
|
|
|
|
|
NC |
New Bern |
18.3 |
9.4 |
35 |
|
Greensboro |
15.6 |
11.1 |
31 |
|
|
|
|
|
ND |
Bismark |
6.7 |
17.2 |
33 |
|
Grand
Forks |
5.6 |
18.3 |
35 |
|
Williston |
7.2 |
16.1 |
34 |
|
|
|
|
|
OH |
Akron |
11.1 |
12.8 |
37 |
|
Columbus |
12.8 |
12.2 |
34 |
|
Dayton |
13.3 |
13.3 |
35 |
|
Toledo |
10.6 |
13.9 |
36 |
|
|
|
|
|
State |
City |
Tm (oC) |
As(oC) |
To(Days) |
|
|
|
|
|
OK |
Altus |
18.3 |
13.3 |
33 |
|
Oklahoma
City |
16.7 |
12.8 |
34 |
|
Tulsa |
16.7 |
12.8 |
34 |
|
|
|
|
|
OR |
Astoria |
11.7 |
5.0 |
45 |
|
Medford |
12.8 |
9.4 |
34 |
|
Portland |
12.2 |
7.2 |
37 |
|
|
|
|
|
PA |
Middletown |
12.8 |
12.8 |
35 |
|
Philadelphia |
12.8 |
12.2 |
34 |
|
Pittsburg |
11.1 |
12.8 |
36 |
|
Wilkes-Barre |
11.1 |
12.8 |
36 |
|
|
|
|
|
SC |
Charleston |
18.9 |
8.9 |
32 |
|
Greenville |
16.7 |
10.6 |
33 |
|
Sumpter |
18.3 |
10.0 |
32 |
|
|
|
|
|
SD |
Huron |
8.3 |
16.7 |
35 |
|
Rapid
City |
10.0 |
13.9 |
38 |
|
|
|
|
|
TN |
Bristol |
15.0 |
11.1 |
32 |
|
Knoxville |
16.1 |
11.7 |
31 |
|
Memphis |
17.2 |
11.7 |
32 |
|
Nashville |
15.6 |
11.7 |
32 |
|
|
|
|
|
TX |
El Paso |
18.9 |
11.1 |
28 |
|
Ft. Worth |
20.0 |
11.7 |
34 |
|
Houston |
21.7 |
8.9 |
33 |
|
San
Antonio |
22.2 |
8.9 |
32 |
|
|
|
|
|
UT |
Salt Lake
City |
11.7 |
13.3 |
35 |
|
|
|
|
|
VT |
Burlington |
7.8 |
14.4 |
37 |
|
|
|
|
|
State |
City |
Tm (oC) |
As(oC) |
To(Days) |
|
|
|
|
|
VA |
Norfolk |
16.1 |
11.1 |
37 |
|
Richmond |
15.6 |
10.6 |
33 |
|
Roanoke |
15.0 |
11.1 |
33 |
|
|
|
|
|
WA |
Moses
Lake |
11.7 |
12.8 |
29 |
|
Seattle |
11.7 |
6.7 |
36 |
|
Spokane |
9.4 |
11.7 |
32 |
|
|
|
|
|
WV |
Charleston |
14.4 |
11.1 |
33 |
|
Elkins |
11.1 |
11.1 |
32 |
|
|
|
|
|
WI |
Green Bay |
7.8 |
14.4 |
37 |
|
Madison |
9.4 |
15.0 |
36 |
|
|
|
|
|
WY |
Casper |
9.4 |
13.3 |
37 |
|
Cheyenne |
8.9 |
11.7 |
39 |
|
Lander |
7.8 |
13.3 |
38 |
|
Sheridan |
8.9 |
13.3 |
35 |
*Adapted from Closed-Loop/Ground-Source Heat Pump Systems Installation Guide. NRECA Research Project 86-1. Oklahoma State University. 1988. and Perry, Robert H. and Chilton, Cecil H. Chemical Engineer's Handbook. 5th Ed. New York, McGraw Hill Book Company, 1973. |