Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 41.20 2.60 97.22 9.20 03Dec2017 9 a.m. 41.88 0.70 94.94 139.30 03Dec2017 10 a.m. 49.03 1.80 83.57 337.10 03Dec2017 11 a.m. 58.44 8.60 76.41 325.70 03Dec2017 12 p.m. 62.74 10.00 68.25 442.50 03Dec2017 1 p.m. 65.68 10.10 59.59 450.80 03Dec2017 2 p.m. 67.14 11.10 55.58 398.70 03Dec2017 3 p.m. 68.41 10.80 52.33 234.50 03Dec2017 4 p.m. 69.19 12.40 47.36 180.20 03Dec2017 5 p.m. 66.02 8.70 57.34 30.50 03Dec2017 6 p.m. 63.21 8.20 72.33 0.00 03Dec2017 7 p.m. 52.39 27.10 48.14 0.00 03Dec2017 8 p.m. 63.70 13.10 73.26 0.00 03Dec2017 9 p.m. 63.59 14.40 76.25 0.00 03Dec2017 10 p.m. 63.48 13.20 77.05 0.00 03Dec2017 11 p.m. 63.45 14.30 75.83 0.00 04Dec2017 12 a.m. 63.50 14.40 75.71 0.00 04Dec2017 1 a.m. 63.73 13.80 78.17 0.00 04Dec2017 2 a.m. 63.77 13.00 80.17 0.00 04Dec2017 3 a.m. 63.97 13.30 78.86 0.00 04Dec2017 4 a.m. 64.18 12.60 77.76 0.00 04Dec2017 5 a.m. 64.74 11.70 76.78 0.00 04Dec2017 6 a.m. 64.99 12.10 77.45 0.00 04Dec2017 7 a.m. 65.17 11.70 79.08 0.00 Accuml. Values 1473.62 269.70 1739.43 2548.50 Num. Valid Values 24 24 24 24 Avg. Values 61.40 11.24 72.48 106.19 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 16.33 433.95 72.48 219.12 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2752 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.4440 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 = 0.6419 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3581 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.5728 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 = 5.0536 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.9836 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.138 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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