Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 42.82 6.00 73.29 90.30 03Mar2018 9 a.m. 47.93 11.20 62.41 287.60 03Mar2018 10 a.m. 53.22 11.90 54.64 461.50 03Mar2018 11 a.m. 58.53 12.00 47.28 598.80 03Mar2018 12 p.m. 62.87 11.50 42.75 689.20 03Mar2018 1 p.m. 65.98 11.30 40.03 718.10 03Mar2018 2 p.m. 67.64 12.10 39.04 713.70 03Mar2018 3 p.m. 67.96 12.80 39.19 576.70 03Mar2018 4 p.m. 67.84 12.80 40.85 424.30 03Mar2018 5 p.m. 67.28 12.30 42.29 214.90 03Mar2018 6 p.m. 65.21 12.20 44.83 53.60 03Mar2018 7 p.m. 55.49 13.10 67.83 0.00 03Mar2018 8 p.m. 60.24 10.80 51.59 0.00 03Mar2018 9 p.m. 59.22 11.00 52.41 0.00 03Mar2018 10 p.m. 56.62 8.40 57.63 0.00 03Mar2018 11 p.m. 54.72 8.20 60.61 0.00 04Mar2018 12 a.m. 53.17 8.90 61.61 0.00 04Mar2018 1 a.m. 51.78 9.00 61.81 0.00 04Mar2018 2 a.m. 50.49 7.20 60.97 0.00 04Mar2018 3 a.m. 48.31 5.60 63.53 0.00 04Mar2018 4 a.m. 47.37 5.70 65.03 0.00 04Mar2018 5 a.m. 45.66 4.60 69.15 0.00 04Mar2018 6 a.m. 45.34 6.00 70.05 0.00 04Mar2018 7 a.m. 45.91 4.40 70.72 0.00 Accuml. Values 1341.61 229.00 1339.54 4828.70 Num. Valid Values 24 24 24 24 Avg. Values 55.90 9.54 55.81 201.20 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.28 368.46 55.81 415.17 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4419 definition: xcompl = 1 - (RELH_avg/100) TdC = 4.6759 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 = 3.9575 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 = 6.7313 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.9705 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.219 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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