ICM File Formats

The Integrated Climatic Model uses several file formats for modeling pavement temperature and moisture profiles.  The format of these files is outlined below.

ICM Files (*.icm)

ICM files are generated by the hourly climatic database and contain all of the information needed to run the Integrated Climatic Model numerical engine.

StartDate(YYYYMMDD) EndDate(YYYYMMDD): The period for which this file contains data for.
19960701-20011231

Longitude, Latitude,ELEVATION, Annual Water Table Depth(-1 if using seasonal), spring  water  table depth , summer water table,  fall water table,  winter water table,MEAN ANNUAL TEMPERATURE, FREEZING DEGREE DAYS,ANNUAL RAINFALL, monthly average humidity (12 total-start January)
-86.23,32.18,227,-1,10,20,19,10,64.8035,12.8717,44.1237,72.3013,69.6847,65.7183,70.4444,70.5253,75.7314,75.2074,74.7334,74.5993,72.8259,74.0491,75.2558

Month, Day, Year, Sunrise time (decimal-24 hour), sunset, daily solar radiation maximum. Sunrise/Sunset calculated from Lat/Long.  Solar radiation data from rad.dat file, correct for Lat/Long.
7 1 1996 4.95899 19.041 3730.48

Hour, temperature, precipitation, wind speed, percent sunshine, hourly ground water depth.
0 72 0 0 100 20
1 71.1 0 0 100 20
2 70 0 3 100 20
3 70 0 0 100 20
4 70 0 3 75 20
5 72 0 0 100 20
6 77 0 6 100 20
7 82 0 6 100 20
8 87.1 0 7 100 20
9 90 0 7 100 20
10 91 0 7 100 20
11 93 0 5 75 20
12 91.9 0 5 25 20
13 93.9 0 6 100 20
14 95 0 5 75 20
15 93 0 5 100 20
16 91 0 6 100 20
17 89.1 0 5 100 20
18 86 0 3 100 20
19 84 0 4 100 20
20 81 0 4 100 20
21 80.1 0 4 100 20
22 79 0 5 100 20
23 77 0 3 100 20

Hourly Climatic Database Files (*.hcd)

Hourly climatic database files contain information for a specific weather station.  To add a weather station to those that are available within the ME-PDG, create a new *.hcd file.  Assign a number unused in the station.dat file (described below).  Add that number to the station.dat file list.

YYYYMMDDHH,Temperature (F),Wind speed (mph),% Sun shine, Precipitation, Relative humidity.
1997060100,57.9,9,0,0.2,97
1997060101,57.9,9,0,0.35,97
1997060102,57.9,5,0,0.18,100
1997060103,59,9,0,0.06,93
1997060104,59,10,0,0.05,93
1997060105,59,12,0,0.07,96
1997060106,59,12,0,0.07,96
1997060107,60.1,9,0,0.03,96
1997060108,61,9,0,0.03,97
1997060109,62.1,9,0,0.06,96
1997060110,63,5,0,0,97
1997060111,64,4,0,0.01,96
1997060112,64.9,3,0,0.04,97
1997060113,68,0,0,0,90
1997060114,69.1,0,0,0,87
1997060115,69.1,0,0,0,84
1997060116,69.1,0,0,0,84
1997060117,69.1,0,0,0,78
1997060118,66.9,0,25,0,87
1997060119,64.9,4,100,0,97
1997060120,64,0,100,0,100
1997060121,62.1,0,50,0,100
1997060122,60.1,3,0,0,100
1997060123,62.1,0,0,0,100
1997060200,62.1,0,0,0,100

Station File (station.dat)

The station.dat file contains all of the hourly climatic database weather stations.  Each weather station included has the following information.

Weather station number, weather station abbreviation, location (city|state), latitude, longitude, elevation, first date in file (YYYMMDD)
25704,ADK,ADAK| AK,ADAK NAS,51.53,-176.39,17,19960701