Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 47.86 5.90 67.92 17.30 04Mar2018 9 a.m. 52.07 6.80 60.14 70.70 04Mar2018 10 a.m. 57.42 11.80 49.97 139.90 04Mar2018 11 a.m. 59.59 12.20 51.04 168.40 04Mar2018 12 p.m. 62.17 13.60 50.32 377.90 04Mar2018 1 p.m. 63.05 14.20 49.48 379.00 04Mar2018 2 p.m. 63.14 14.40 48.88 427.50 04Mar2018 3 p.m. 62.55 14.10 49.85 342.20 04Mar2018 4 p.m. 61.14 13.30 52.72 139.60 04Mar2018 5 p.m. 58.44 13.50 59.25 49.00 04Mar2018 6 p.m. 56.41 13.20 65.81 0.90 04Mar2018 7 p.m. 52.21 7.60 18.63 0.00 04Mar2018 8 p.m. 55.00 11.60 70.38 0.00 04Mar2018 9 p.m. 54.70 11.40 73.57 0.00 04Mar2018 10 p.m. 54.57 10.30 77.48 0.00 04Mar2018 11 p.m. 54.01 9.60 83.76 0.00 05Mar2018 12 a.m. 52.65 10.30 97.36 0.00 05Mar2018 1 a.m. 53.31 10.80 95.02 0.00 05Mar2018 2 a.m. 54.28 9.50 90.43 0.00 05Mar2018 3 a.m. 54.39 9.50 86.53 0.00 05Mar2018 4 a.m. 54.50 9.60 86.00 0.00 05Mar2018 5 a.m. 54.97 6.20 86.15 0.00 05Mar2018 6 a.m. 55.33 6.50 88.96 0.00 05Mar2018 7 a.m. 47.86 19.80 73.60 0.00 Accuml. Values 1341.62 265.70 1633.25 2112.40 Num. Valid Values 24 24 24 24 Avg. Values 55.90 11.07 68.05 88.02 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.28 427.51 68.05 181.62 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3195 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.5778 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 = 0.6014 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3986 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.9941 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 = 4.8326 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.6394 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.128 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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