Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 59.22 2.96 94.43 6.00 04Dec2017 9 a.m. 59.67 3.20 97.06 22.00 04Dec2017 10 a.m. 60.10 2.82 99.32 26.00 04Dec2017 11 a.m. 61.63 3.76 99.44 48.00 04Dec2017 12 p.m. 62.85 4.65 99.62 49.00 04Dec2017 1 p.m. 65.50 3.61 97.31 95.00 04Dec2017 2 p.m. 67.24 3.30 88.46 39.00 04Dec2017 3 p.m. 70.21 3.32 79.48 57.00 04Dec2017 4 p.m. 68.67 1.83 90.83 79.00 04Dec2017 5 p.m. 67.46 2.63 94.07 20.00 04Dec2017 6 p.m. 64.81 2.35 99.26 0.00 04Dec2017 7 p.m. 44.17 0.75 42.74 0.00 04Dec2017 8 p.m. 65.16 2.65 96.14 0.00 04Dec2017 9 p.m. 60.33 1.86 99.27 0.00 04Dec2017 10 p.m. 59.88 4.09 87.85 0.00 04Dec2017 11 p.m. 57.69 5.02 75.52 0.00 05Dec2017 12 a.m. 58.44 0.63 60.55 0.00 05Dec2017 1 a.m. 56.93 4.35 48.84 0.00 05Dec2017 2 a.m. 55.17 5.59 52.69 0.00 05Dec2017 3 a.m. 54.18 2.18 46.70 0.00 05Dec2017 4 a.m. 52.20 0.63 50.00 0.00 05Dec2017 5 a.m. 50.77 2.99 46.09 0.00 05Dec2017 6 a.m. 49.23 3.06 46.46 0.00 05Dec2017 7 a.m. 48.13 3.24 46.76 0.00 Accuml. Values 1419.62 71.47 1838.89 441.00 Num. Valid Values 24 24 24 24 Avg. Values 59.15 2.98 76.62 18.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.08 115.00 76.62 37.92 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2338 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.0539 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 = 0.6257 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3743 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6069 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 = 3.9713 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.5359 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.022 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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