Detailed Weather Data for Project: COUN

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 42.62 21.50 70.08 72.30 05Mar2018 9 a.m. 42.76 27.30 59.42 267.20 05Mar2018 10 a.m. 43.30 36.10 56.84 426.60 05Mar2018 11 a.m. 43.99 28.30 54.76 554.40 05Mar2018 12 p.m. 44.89 26.00 51.31 599.50 05Mar2018 1 p.m. 47.53 25.00 37.38 748.50 05Mar2018 2 p.m. 50.14 29.80 24.66 728.60 05Mar2018 3 p.m. 50.88 32.10 21.40 637.60 05Mar2018 4 p.m. 51.57 32.20 20.79 495.60 05Mar2018 5 p.m. 51.85 31.00 21.71 307.00 05Mar2018 6 p.m. 51.44 27.80 22.63 114.30 05Mar2018 7 p.m. 35.56 4.60 61.39 0.00 05Mar2018 8 p.m. 47.17 10.90 24.80 0.00 05Mar2018 9 p.m. 45.10 10.30 27.46 0.00 05Mar2018 10 p.m. 43.02 10.50 29.81 0.00 05Mar2018 11 p.m. 43.88 15.30 30.98 0.00 06Mar2018 12 a.m. 41.88 12.30 34.12 0.00 06Mar2018 1 a.m. 40.06 12.50 38.49 0.00 06Mar2018 2 a.m. 39.38 14.30 41.35 0.00 06Mar2018 3 a.m. 41.49 20.40 37.60 0.00 06Mar2018 4 a.m. 41.00 20.30 35.44 0.00 06Mar2018 5 a.m. 40.51 21.70 34.77 0.00 06Mar2018 6 a.m. 40.95 27.00 34.38 0.00 06Mar2018 7 a.m. 41.22 30.10 34.22 0.00 Accuml. Values 1062.21 527.30 905.79 4951.60 Num. Valid Values 24 24 24 24 Avg. Values 44.26 21.97 37.74 206.32 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.81 848.43 37.74 425.74 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6226 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.7441 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 = 0.5080 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4920 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.6282 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 = 6.2268 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 14.4015 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.352 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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