Detailed Weather Data for Project: FOSS

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 58.59 11.86 92.75 7.00 04Mar2018 9 a.m. 59.54 10.36 92.67 28.00 04Mar2018 10 a.m. 60.26 12.86 91.50 72.50 04Mar2018 11 a.m. 60.08 13.94 93.67 60.00 04Mar2018 12 p.m. 60.39 15.21 94.75 88.25 04Mar2018 1 p.m. 60.50 14.54 96.00 98.33 04Mar2018 2 p.m. 62.51 15.32 89.75 106.00 04Mar2018 3 p.m. 63.99 14.54 86.75 104.00 04Mar2018 4 p.m. 65.97 16.83 82.00 146.25 04Mar2018 5 p.m. 69.12 16.44 74.75 316.25 04Mar2018 6 p.m. 66.74 15.88 78.00 86.00 04Mar2018 7 p.m. 64.22 12.30 87.00 0.00 04Mar2018 8 p.m. 62.78 12.30 88.00 0.00 04Mar2018 9 p.m. 61.70 14.54 91.00 0.00 04Mar2018 10 p.m. 61.88 17.22 91.00 0.00 04Mar2018 11 p.m. 61.97 20.75 90.50 0.00 05Mar2018 12 a.m. 61.25 18.12 90.25 0.00 05Mar2018 1 a.m. 60.12 20.08 88.75 0.00 05Mar2018 2 a.m. 57.20 14.43 88.00 0.00 05Mar2018 3 a.m. 55.46 15.73 68.67 0.00 05Mar2018 4 a.m. 53.01 18.85 38.75 0.00 05Mar2018 5 a.m. 48.47 15.32 43.50 0.00 05Mar2018 6 a.m. 46.85 22.42 42.50 0.00 05Mar2018 7 a.m. 44.87 16.89 45.00 2.00 Accuml. Values 1427.47 376.73 1925.51 1114.58 Num. Valid Values 24 24 24 24 Avg. Values 59.48 15.70 80.23 46.44 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.27 606.16 80.23 95.83 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1977 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.9080 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 = 0.6281 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3719 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0487 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 = 3.4060 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.4034 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.095 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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