Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 58.44 11.63 100.48 5.00 04Mar2018 9 a.m. 58.33 10.97 100.48 21.00 04Mar2018 10 a.m. 59.43 10.75 100.54 48.00 04Mar2018 11 a.m. 60.87 10.97 100.54 114.00 04Mar2018 12 p.m. 62.62 5.27 100.54 139.00 04Mar2018 1 p.m. 63.28 10.53 100.42 89.00 04Mar2018 2 p.m. 63.50 11.41 100.55 57.00 04Mar2018 3 p.m. 64.27 9.21 100.48 91.00 04Mar2018 4 p.m. 67.35 13.38 95.65 120.00 04Mar2018 5 p.m. 68.34 13.38 88.39 109.00 04Mar2018 6 p.m. 67.24 9.21 92.00 38.00 04Mar2018 7 p.m. 59.13 4.17 18.68 22.00 04Mar2018 8 p.m. 65.05 10.31 100.49 0.00 04Mar2018 9 p.m. 63.07 9.65 100.48 0.00 04Mar2018 10 p.m. 65.37 11.19 100.49 0.00 04Mar2018 11 p.m. 66.04 8.34 100.54 0.00 05Mar2018 12 a.m. 65.05 9.00 100.54 0.00 05Mar2018 1 a.m. 64.17 10.97 100.60 0.00 05Mar2018 2 a.m. 63.50 13.16 100.48 0.00 05Mar2018 3 a.m. 62.62 11.63 100.48 0.00 05Mar2018 4 a.m. 62.51 11.41 100.54 0.00 05Mar2018 5 a.m. 61.52 11.41 100.54 0.00 05Mar2018 6 a.m. 59.54 10.53 100.60 0.00 05Mar2018 7 a.m. 53.94 32.47 58.54 1.00 Accuml. Values 1505.19 270.95 2263.07 854.00 Num. Valid Values 24 24 24 24 Avg. Values 62.72 11.29 94.29 35.58 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.06 435.96 94.29 73.43 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0571 definition: xcompl = 1 - (RELH_avg/100) TdC = 16.1201 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 = 0.6512 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3488 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.1799 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 = 1.1332 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.8802 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.021 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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