Detailed Weather Data for Project: SARD

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 63.82 17.50 84.22 19.30 05Mar2018 9 a.m. 65.55 7.10 80.39 190.90 05Mar2018 10 a.m. 59.92 18.20 56.40 490.20 05Mar2018 11 a.m. 56.14 25.20 49.17 706.80 05Mar2018 12 p.m. 57.52 30.00 43.34 739.90 05Mar2018 1 p.m. 58.60 28.90 38.72 824.50 05Mar2018 2 p.m. 58.53 26.70 36.53 784.90 05Mar2018 3 p.m. 58.68 27.90 32.75 671.70 05Mar2018 4 p.m. 58.75 23.20 30.16 462.10 05Mar2018 5 p.m. 58.12 20.50 32.92 225.90 05Mar2018 6 p.m. 58.06 21.80 31.37 94.00 05Mar2018 7 p.m. 55.35 33.40 26.64 0.90 05Mar2018 8 p.m. 55.69 15.40 35.91 0.00 05Mar2018 9 p.m. 53.71 11.20 44.95 0.00 05Mar2018 10 p.m. 52.12 6.50 45.89 0.00 05Mar2018 11 p.m. 48.58 2.50 55.81 0.00 06Mar2018 12 a.m. 44.46 3.00 52.83 0.00 06Mar2018 1 a.m. 38.82 4.30 63.29 0.00 06Mar2018 2 a.m. 37.11 3.20 67.52 0.00 06Mar2018 3 a.m. 36.46 2.10 74.01 0.00 06Mar2018 4 a.m. 35.01 3.30 74.81 0.00 06Mar2018 5 a.m. 34.81 2.30 79.37 0.00 06Mar2018 6 a.m. 35.28 5.40 80.48 0.00 06Mar2018 7 a.m. 31.87 4.80 81.19 1.40 Accuml. Values 1212.96 344.40 1298.67 5212.50 Num. Valid Values 24 24 24 24 Avg. Values 50.54 14.35 54.11 217.19 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 10.30 554.14 54.11 448.17 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4589 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.4397 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 = 0.5595 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4405 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.1732 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 = 5.7616 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 9.4653 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.256 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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