Detailed Weather Data for Project: PINE

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 61.88 8.00 91.24 0.00 04Dec2017 9 a.m. 61.97 9.40 92.07 7.30 04Dec2017 10 a.m. 63.16 10.20 92.28 64.50 04Dec2017 11 a.m. 65.08 10.70 90.16 78.20 04Dec2017 12 p.m. 67.59 12.80 87.78 92.90 04Dec2017 1 p.m. 69.46 11.70 84.66 87.70 04Dec2017 2 p.m. 71.53 10.00 79.40 62.50 04Dec2017 3 p.m. 72.48 7.70 77.77 74.70 04Dec2017 4 p.m. 74.52 9.80 72.29 169.30 04Dec2017 5 p.m. 75.00 9.20 68.53 26.10 04Dec2017 6 p.m. 73.83 7.90 70.60 0.00 04Dec2017 7 p.m. 43.97 5.30 39.67 0.00 04Dec2017 8 p.m. 71.74 8.40 71.64 0.00 04Dec2017 9 p.m. 63.54 8.30 92.33 0.00 04Dec2017 10 p.m. 61.36 12.10 84.40 0.00 04Dec2017 11 p.m. 59.11 8.50 79.72 0.00 05Dec2017 12 a.m. 57.52 8.00 73.88 0.00 05Dec2017 1 a.m. 57.97 19.80 47.15 0.00 05Dec2017 2 a.m. 55.54 18.00 48.18 0.00 05Dec2017 3 a.m. 54.01 12.20 45.99 0.00 05Dec2017 4 a.m. 52.52 14.00 43.49 0.00 05Dec2017 5 a.m. 50.68 13.50 42.93 0.00 05Dec2017 6 a.m. 48.94 9.80 45.70 0.00 05Dec2017 7 a.m. 48.09 9.50 46.46 0.00 Accuml. Values 1481.50 254.80 1668.32 663.20 Num. Valid Values 24 24 24 24 Avg. Values 61.73 10.62 69.51 27.63 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 16.52 409.97 69.51 57.02 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3049 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.9994 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 = 0.6443 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3557 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3777 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 = 5.6637 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.4006 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.094 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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