Detailed Weather Data for Project: COUN

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 40.95 31.70 36.17 85.90 06Mar2018 9 a.m. 41.34 28.10 41.31 225.40 06Mar2018 10 a.m. 38.35 26.50 61.37 224.60 06Mar2018 11 a.m. 37.27 24.50 65.42 287.00 06Mar2018 12 p.m. 37.45 17.70 65.73 364.70 06Mar2018 1 p.m. 35.31 21.30 74.76 347.00 06Mar2018 2 p.m. 35.51 23.80 66.30 346.80 06Mar2018 3 p.m. 36.36 14.30 59.33 223.20 06Mar2018 4 p.m. 37.18 10.20 55.12 156.90 06Mar2018 5 p.m. 36.68 5.00 57.43 204.20 06Mar2018 6 p.m. 36.30 4.70 58.43 71.60 06Mar2018 7 p.m. 44.82 0.80 31.80 5.80 06Mar2018 8 p.m. 34.93 3.20 62.46 0.00 06Mar2018 9 p.m. 34.30 2.80 63.32 0.00 06Mar2018 10 p.m. 33.44 2.80 64.66 0.00 06Mar2018 11 p.m. 32.63 2.00 66.06 0.00 07Mar2018 12 a.m. 31.98 2.00 66.58 0.00 07Mar2018 1 a.m. 31.91 1.80 66.86 0.00 07Mar2018 2 a.m. 31.48 1.50 67.45 0.00 07Mar2018 3 a.m. 30.31 5.90 70.46 0.00 07Mar2018 4 a.m. 27.68 11.40 75.98 0.00 07Mar2018 5 a.m. 26.60 10.20 79.67 0.00 07Mar2018 6 a.m. 29.25 2.40 78.20 0.00 07Mar2018 7 a.m. 29.84 4.30 74.92 0.00 Accuml. Values 831.88 258.90 1509.79 2543.10 Num. Valid Values 24 24 24 24 Avg. Values 34.66 10.79 62.91 105.96 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 1.48 416.57 62.91 218.66 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3709 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.7880 definition: TdC = TAIR_avg - ((14.55 + (0.114*TAIR_avg))*xcompl +pow((2.5 + 0.007*TAIR_avg)*xcompl, 3) + (15.9 +0.117*TAIR_avg)*pow(xcompl, 14)) del_lambda1 = 0.4263 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5737 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.0168 definition: Qn = 0.00714*SRAD_avg + 0.00000526*SRAD_avg*pow(TAIR_avg+17.8, 1.87) +0.00000394*pow(SRAD_avg, 2) - 0.00000000239*pow(SRAD_avg, 2)*pow(TAIR_avg-7.2, 2) - 1.02 es_ea = 2.5291 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.6837 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.100 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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