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Potential Evapotranspiration (PET) |
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Potential Evapotranspiration (PET) |
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Potential Evapotranspiration (PET)
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Potential Evapotranspiration (PET) |
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Potential Evapotranspiration (PET) |
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DRAINMOD can also use files containing daily PET data. An example from a PET file is shown in Table 1. There are two lines for each month. The first line contains the station ID in columns 1-6, the year in columns 8-11 and the month in columns 12-13. The daily PET in hundredths of inches for day 1 of the month is in columns 17-20.. PET for day 2 is in columns 21-24 and so on. Line 1 contains the daily PET for days 1-14 and line 2 for days 15-31 (Table 2).
Table 1. Example of a PET file.
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999999 1983 9 13 4 11 18 23 24 22 20 19 20 21 18 13 2
10 9 14 15 15 11 7 10 11 11 10 9 11 10 5 3
999999 198310 11 12 13 15 13 13 12 8 9 9 2 7 9 9
9 10 9 8 9 3 3 4 2 8 3 8 6 8 9 7 6
999999 198311 7 2 7 1 3 5 4 7 6 4 8 5 2 4
2 4 4 4 6 5 7 6 4 3 5 5 4 3 7 4
999999 198312 4 4 1 4 2 1 4 3 3 4 4 1 4 4
1 4 3 2 2 2 1 2 3 3 3 3 1 1 0 1 0
999999 1984 1 2 2 2 3 1 3 2 3 3 1 0 1 0 1
1 1 1 0 1 1 1 0 2 2 2 4 4 4 3 3 3
999999 1984 2 2 4 5 1 2 0 0 1 4 6 6 8 6 2
8 8 8 10 7 8 6 7 1 10 8 6 1 5 4
999999 1984 3 4 4 5 6 1 1 4 7 4 4 7 6 1 9
9 12 10 9 3 10 12 13 11 11 7 8 10 5 3 11 9
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Table 2. Explanation of the lines 1 and 2 from Table 1.
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Line 1 of a Month
DAY OF MONTH
ID YEAR M 1 2 3 4 5 6 7 8 9 10 11 12 13 14
999999 1983 9 13 4 11 18 23 24 22 20 19 20 21 18 13 2
Line 2 of a Month
DAY OF MONTH
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
10 9 14 15 15 11 7 10 11 11 10 9 11 10 5 3
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* M is the Month