Annual Soil Swing, and Phase Constants for U.S. Cities* ÍÁÈÀÊôÐÔ±í3£ºÃÀ¹ú¸÷³ÇÊÐµÄÆ½¾ùµØÎ¡¢Äê¶ÈµØÎ²¨¶¯¼°Ïàλ³£Êý* Note: The 'Phase Constant' represents the coldest day of the year.
The warmest day of the year is approximately 6 months (~182 days) after To. |
ÖÝ |
City ³ÇÊÐ |
Tm (oF) | As(oF) | Coldest
Day of Year Äê¶È×îÀäÌìÊý To(Days) |
Warmest
Day of Year Äê¶È×îÈÈÌìÊý T1(Days) |
|
Birmingham |
|
|
|
|
¡¡ | Montgomery |
|
|
|
|
¡¡ | ¡¡ | ¡¡ | |||
|
Phoenix |
|
|
|
|
¡¡ | Tucson |
|
|
|
|
|
|
|
|
|
|
|
Little Rock |
|
|
|
|
|
|
|
|
|
|
|
Los Angeles |
|
|
|
|
|
Merced |
|
|
|
|
|
San Diego |
|
|
|
|
|
|
|
|
|
|
|
Colorado Springs |
|
|
|
|
|
Denver |
|
|
|
|
|
Grand Junction |
|
|
|
|
|
|
|
|
|
|
|
Washington |
|
|
|
|
|
|
|
|
|
|
|
Appalachio. |
|
|
|
¡¡ |
¡¡ | Jacksonville |
|
|
|
|
|
|
|
|
|
|
|
Atlanta |
|
|
|
|
|
Augusta |
|
|
|
|
|
Macon |
|
|
|
|
|
|
|
|
|
|
|
Des Moines |
|
|
|
¡¡ |
¡¡ | Sioux City |
|
|
|
¡¡ |
¡¡ | ¡¡ | ¡¡ | ¡¡ | ¡¡ | ¡¡ |
|
Boise |
|
|
|
|
¡¡ | Idaho Falls |
|
|
|
|
|
|
|
|
|
|
|
Chicago |
|
|
|
|
|
E. St. Louis |
|
|
|
|
|
Urbana |
|
|
|
|
|
|
|
|
|
|
|
Ft. Wayne |
|
|
|
|
|
Indianapolis |
|
|
|
|
|
South Bend |
|
|
|
|
|
|
|
|
|
|
|
Dodge City |
|
|
|
|
|
Topeka |
|
|
|
|
|
|
|
|
|
|
|
Louisville |
|
|
|
|
ÖÝ |
City ³ÇÊÐ |
Tm (oF) | As(oF) | Coldest
Day of Year Äê¶È×îÀäÌìÊý To(Days) |
Warmest
Day of Year Äê¶È×îÈÈÌìÊý T1(Days) |
|
Lake Charles |
|
|
|
|
¡¡ | New Orleans |
|
|
|
|
¡¡ | Shreveport |
|
|
|
|
|
Portland |
|
|
|
|
|
|
|
|
|
|
|
Plymouth |
|
|
|
|
|
|
|
|
|
|
|
Battle Creek |
|
|
|
|
|
Detroit |
|
|
|
|
|
Sau St. Marie |
|
|
|
|
|
|
|
|
|
|
|
Duluth |
|
|
|
|
|
Int. Fals |
|
|
|
|
|
Minneapolis |
|
|
|
|
|
|
|
|
|
|
|
Biloxi |
|
|
|
|
|
Columbus |
|
|
|
|
Jackson |
|
|
|
||
|
Columbia |
|
|
|
¡¡ |
¡¡ | Kansas City |
|
|
|
|
|
Springfield |
|
|
|
|
|
Billings |
|
|
|
|
|
Great Falls |
|
|
|
|
|
Missoula |
|
|
|
|
|
|
|
|
|
|
|
Grand Junction |
|
|
|
¡¡ |
¡¡ | Lincoln |
|
|
|
¡¡ |
N. Platte |
|
|
|
||
¡¡ | ¡¡ | ¡¡ | ¡¡ | ¡¡ | ¡¡ |
|
Ely |
|
|
|
|
¡¡ | Las Vegas |
|
|
|
|
|
Winnemucca |
|
|
|
|
|
Trenton |
|
|
|
|
|
|
|
|
|
|
|
Albuquerque |
|
|
|
|
|
Roswell |
|
|
|
|
|
|
|
|
|
|
|
Albany |
|
|
|
|
|
Binghamton |
|
|
|
|
Niagra Falls |
|
|
|
¡¡ | |
Syracuse |
|
|
|
ÖÝ |
City ³ÇÊÐ |
Tm (oF) | As(oF) | Coldest
Day of Year Äê¶È×îÀäÌìÊý To(Days) |
Warmest
Day of Year Äê¶È×îÈÈÌìÊý T1(Days) |
|
Lake Charles |
|
|
|
|
¡¡ | New Orleans |
|
|
|
|
¡¡ | Shreveport |
|
|
|
|
|
Portland |
|
|
|
|
|
|
|
|
|
|
|
Plymouth |
|
|
|
|
|
|
|
|
|
|
|
Battle Creek |
|
|
|
|
|
Detroit |
|
|
|
|
|
Sau St. Marie |
|
|
|
|
|
|
|
|
|
|
|
Duluth |
|
|
|
|
|
Int. Fals |
|
|
|
|
|
Minneapolis |
|
|
|
|
|
|
|
|
|
|
|
Biloxi |
|
|
|
|
|
Columbus |
|
|
|
|
Jackson |
|
|
|
||
|
Columbia |
|
|
|
¡¡ |
¡¡ | Kansas City |
|
|
|
|
|
Springfield |
|
|
|
|
|
Billings |
|
|
|
|
|
Great Falls |
|
|
|
|
|
Missoula |
|
|
|
|
|
|
|
|
|
|
|
Grand Junction |
|
|
|
¡¡ |
¡¡ | Lincoln |
|
|
|
¡¡ |
N. Platte |
|
|
|
||
¡¡ | ¡¡ | ¡¡ | ¡¡ | ¡¡ | ¡¡ |
|
Ely |
|
|
|
|
¡¡ | Las Vegas |
|
|
|
|
|
Winnemucca |
|
|
|
|
|
Trenton |
|
|
|
|
|
|
|
|
|
|
|
Albuquerque |
|
|
|
|
|
Roswell |
|
|
|
|
|
|
|
|
|
|
|
Albany |
|
|
|
|
|
Binghamton |
|
|
|
|
Niagra Falls |
|
|
|
¡¡ | |
Syracuse |
|
|
|
*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. |