Detailed Weather Data for Project: FSUP

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 11.28 4.50 81.51 0.00 30Dec2017 9 a.m. 10.29 4.00 78.06 8.40 30Dec2017 10 a.m. 9.61 4.20 77.14 45.10 30Dec2017 11 a.m. 9.72 4.10 75.01 123.70 30Dec2017 12 p.m. 10.20 3.60 73.34 162.40 30Dec2017 1 p.m. 10.85 2.60 70.25 177.70 30Dec2017 2 p.m. 11.57 2.50 68.14 188.40 30Dec2017 3 p.m. 12.99 2.60 65.46 206.90 30Dec2017 4 p.m. 14.11 3.20 62.49 146.40 30Dec2017 5 p.m. 13.82 3.20 62.38 42.60 30Dec2017 6 p.m. 13.21 3.80 63.91 0.00 30Dec2017 7 p.m. 10.62 2.30 43.80 0.00 30Dec2017 8 p.m. 12.65 6.00 66.40 0.00 30Dec2017 9 p.m. 12.76 7.40 68.97 0.00 30Dec2017 10 p.m. 13.05 6.30 69.72 0.00 30Dec2017 11 p.m. 13.14 2.60 68.91 0.00 31Dec2017 12 a.m. 13.35 2.10 66.98 0.00 31Dec2017 1 a.m. 13.50 2.50 64.92 0.00 31Dec2017 2 a.m. 13.96 3.00 61.04 0.00 31Dec2017 3 a.m. 12.70 3.50 58.56 0.00 31Dec2017 4 a.m. 11.01 3.30 61.07 0.00 31Dec2017 5 a.m. 9.36 3.00 62.56 0.00 31Dec2017 6 a.m. 8.56 3.90 63.00 0.00 31Dec2017 7 a.m. 7.72 3.70 63.63 0.00 Accuml. Values 280.02 87.90 1597.25 1101.60 Num. Valid Values 24 24 24 24 Avg. Values 11.67 3.66 66.55 45.90 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -11.30 141.43 66.55 94.72 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3345 definition: xcompl = 1 - (RELH_avg/100) TdC = -16.2627 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 = 0.2398 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7602 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2992 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 = 0.8679 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.7329 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.019 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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