Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 14.95 0.12 54.64 21.00 02Jan2018 9 a.m. 17.69 0.28 47.31 99.00 02Jan2018 10 a.m. 19.89 1.01 38.03 272.00 02Jan2018 11 a.m. 21.76 0.46 44.51 218.00 02Jan2018 12 p.m. 23.20 0.90 40.60 278.00 02Jan2018 1 p.m. 25.05 0.26 37.97 259.00 02Jan2018 2 p.m. 25.61 0.48 29.12 173.00 02Jan2018 3 p.m. 26.49 0.20 31.44 84.00 02Jan2018 4 p.m. 26.17 0.72 29.61 41.00 02Jan2018 5 p.m. 26.15 0.25 32.54 13.00 02Jan2018 6 p.m. 25.83 0.54 35.71 0.00 02Jan2018 7 p.m. 35.06 5.26 47.31 0.00 02Jan2018 8 p.m. 25.38 1.10 35.90 0.00 02Jan2018 9 p.m. 24.62 1.98 39.74 1.00 02Jan2018 10 p.m. 23.29 0.99 45.48 0.00 02Jan2018 11 p.m. 21.20 1.05 51.89 0.00 03Jan2018 12 a.m. 21.33 0.84 55.19 0.00 03Jan2018 1 a.m. 21.97 0.06 47.25 0.00 03Jan2018 2 a.m. 20.77 0.14 48.60 0.00 03Jan2018 3 a.m. 20.55 2.33 50.79 0.00 03Jan2018 4 a.m. 19.00 0.65 58.12 0.00 03Jan2018 5 a.m. 19.99 1.81 57.26 0.00 03Jan2018 6 a.m. 18.57 2.45 54.46 0.00 03Jan2018 7 a.m. 16.27 0.01 59.77 0.00 Accuml. Values 540.79 23.89 1073.24 1459.00 Num. Valid Values 24 24 24 24 Avg. Values 22.53 1.00 44.72 60.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -5.26 38.44 44.72 125.44 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5528 definition: xcompl = 1 - (RELH_avg/100) TdC = -15.5002 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 = 0.3239 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6761 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0065 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 = 2.3173 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.1134 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.030 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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