Detailed Weather Data for Project: OOLO

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. -901.00 -901.00 -901.00 -901.00 04Dec2017 9 a.m. -901.00 -901.00 -901.00 -901.00 04Dec2017 10 a.m. -901.00 -901.00 -901.00 -901.00 04Dec2017 11 a.m. 68.74 9.10 76.86 140.90 04Dec2017 12 p.m. 71.76 11.10 69.42 243.20 04Dec2017 1 p.m. 74.19 13.20 61.87 189.60 04Dec2017 2 p.m. 75.85 14.50 56.68 238.00 04Dec2017 3 p.m. 76.78 11.70 51.68 165.10 04Dec2017 4 p.m. 76.51 12.50 43.19 110.00 04Dec2017 5 p.m. 70.34 12.50 38.97 16.20 04Dec2017 6 p.m. 64.47 11.00 36.11 0.00 04Dec2017 7 p.m. 40.14 3.50 30.49 0.00 04Dec2017 8 p.m. 60.15 16.50 28.94 0.00 04Dec2017 9 p.m. 54.43 18.20 38.86 0.00 04Dec2017 10 p.m. 50.63 15.60 38.29 0.00 04Dec2017 11 p.m. 47.62 11.70 40.31 0.00 05Dec2017 12 a.m. 44.62 10.30 45.01 0.00 05Dec2017 1 a.m. 42.91 10.40 47.57 0.00 05Dec2017 2 a.m. 40.82 10.40 48.75 0.00 05Dec2017 3 a.m. 38.59 9.80 48.57 0.00 05Dec2017 4 a.m. 36.72 9.90 46.69 0.00 05Dec2017 5 a.m. 35.13 9.80 43.81 0.00 05Dec2017 6 a.m. 34.59 9.00 43.26 0.00 05Dec2017 7 a.m. 34.57 7.90 42.53 0.00 Accuml. Values 1139.57 238.60 977.86 1103.00 Num. Valid Values 21 21 21 21 Avg. Values 54.27 11.36 46.56 52.52 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.37 438.75 46.56 108.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5344 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.1981 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 = 0.5889 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4111 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.1326 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 = 7.7221 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.2259 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.169 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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