Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 46.36 0.49 65.44 26.00 03Mar2018 9 a.m. 50.86 0.12 57.56 331.00 03Mar2018 10 a.m. 54.61 0.65 49.32 539.00 03Mar2018 11 a.m. 57.34 1.88 44.62 672.00 03Mar2018 12 p.m. 60.42 1.46 43.95 748.00 03Mar2018 1 p.m. 62.73 1.76 39.56 760.00 03Mar2018 2 p.m. 64.17 1.69 38.64 708.00 03Mar2018 3 p.m. 65.80 2.32 37.42 590.00 03Mar2018 4 p.m. 66.70 1.70 34.43 421.00 03Mar2018 5 p.m. 65.16 1.92 32.54 160.00 03Mar2018 6 p.m. 62.19 0.55 38.76 24.00 03Mar2018 7 p.m. 50.56 1.54 98.96 1.00 03Mar2018 8 p.m. 54.50 0.30 56.77 1.00 03Mar2018 9 p.m. 53.40 0.80 60.98 1.00 03Mar2018 10 p.m. 51.75 0.81 58.97 1.00 03Mar2018 11 p.m. 52.86 0.70 53.48 0.00 04Mar2018 12 a.m. 53.73 0.91 54.27 1.00 04Mar2018 1 a.m. 53.19 0.93 54.88 1.00 04Mar2018 2 a.m. 52.74 1.13 56.28 1.00 04Mar2018 3 a.m. 52.30 0.62 56.16 0.00 04Mar2018 4 a.m. 52.30 0.29 58.67 1.00 04Mar2018 5 a.m. 51.75 0.05 61.16 0.00 04Mar2018 6 a.m. 51.87 1.38 58.36 1.00 04Mar2018 7 a.m. 51.08 0.70 65.38 2.00 Accuml. Values 1338.37 24.70 1276.56 4990.00 Num. Valid Values 24 24 24 24 Avg. Values 55.77 1.03 53.19 207.92 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.20 39.74 53.19 429.04 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4681 definition: xcompl = 1 - (RELH_avg/100) TdC = 3.9001 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 = 0.6004 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3996 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.1408 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 = 7.1101 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.0075 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.145 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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