Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 42.96 1.19 42.92 23.00 06Dec2017 9 a.m. 44.29 1.43 40.35 92.00 06Dec2017 10 a.m. 44.94 0.04 49.88 136.00 06Dec2017 11 a.m. 46.47 0.40 43.28 152.00 06Dec2017 12 p.m. 49.01 3.97 29.43 237.00 06Dec2017 1 p.m. 49.78 1.80 27.23 199.00 06Dec2017 2 p.m. 50.32 1.58 31.20 160.00 06Dec2017 3 p.m. 51.08 0.28 28.75 129.00 06Dec2017 4 p.m. 50.56 0.14 33.64 81.00 06Dec2017 5 p.m. 50.22 2.81 32.72 21.00 06Dec2017 6 p.m. 48.02 0.54 34.98 1.00 06Dec2017 7 p.m. 35.06 5.06 44.76 0.00 06Dec2017 8 p.m. 44.29 1.26 52.44 0.00 06Dec2017 9 p.m. 43.84 0.51 51.83 0.00 06Dec2017 10 p.m. 45.72 2.64 42.61 0.00 06Dec2017 11 p.m. 46.38 1.87 46.40 0.00 07Dec2017 12 a.m. 47.03 1.70 50.55 0.00 07Dec2017 1 a.m. 46.26 0.54 55.61 0.00 07Dec2017 2 a.m. 36.81 2.59 73.14 0.00 07Dec2017 3 a.m. 35.49 2.22 73.26 0.00 07Dec2017 4 a.m. 34.50 0.25 79.30 0.00 07Dec2017 5 a.m. 36.05 0.33 75.76 0.00 07Dec2017 6 a.m. 41.52 2.15 60.80 0.00 07Dec2017 7 a.m. 39.56 3.92 64.90 0.00 Accuml. Values 1060.18 39.22 1165.74 1231.00 Num. Valid Values 24 24 24 24 Avg. Values 44.17 1.63 48.57 51.29 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.76 63.10 48.57 105.84 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5143 definition: xcompl = 1 - (RELH_avg/100) TdC = -3.3657 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 = 0.5073 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4927 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0014 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 = 5.1099 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.5335 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.049 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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