Detailed Weather Data for Project: FSUP

Date Time TAIR WSPD RELH SRAD 01Jan2018 8 a.m. -5.33 0.50 67.93 0.00 01Jan2018 9 a.m. -3.77 1.40 66.80 87.50 01Jan2018 10 a.m. -1.03 3.50 60.18 280.90 01Jan2018 11 a.m. 2.68 3.40 51.03 458.00 01Jan2018 12 p.m. 6.67 3.00 44.74 571.10 01Jan2018 1 p.m. 9.79 3.30 42.10 592.80 01Jan2018 2 p.m. 12.00 4.70 40.20 554.70 01Jan2018 3 p.m. 13.95 6.50 38.71 435.20 01Jan2018 4 p.m. 13.30 5.70 40.31 48.40 01Jan2018 5 p.m. 13.53 7.20 37.79 54.40 01Jan2018 6 p.m. 12.87 8.20 37.26 3.50 01Jan2018 7 p.m. 21.16 1.80 37.57 0.00 01Jan2018 8 p.m. 9.43 8.30 40.88 0.00 01Jan2018 9 p.m. 8.56 8.20 42.67 0.00 01Jan2018 10 p.m. 8.44 10.30 44.22 0.00 01Jan2018 11 p.m. 7.39 9.00 44.59 0.00 02Jan2018 12 a.m. 5.67 5.50 46.93 0.00 02Jan2018 1 a.m. 5.20 7.20 49.89 0.00 02Jan2018 2 a.m. 3.70 4.90 50.76 0.00 02Jan2018 3 a.m. 4.30 9.10 53.71 0.00 02Jan2018 4 a.m. 6.62 7.60 54.96 0.00 02Jan2018 5 a.m. 6.76 5.50 54.04 0.00 02Jan2018 6 a.m. 7.68 5.70 54.41 0.00 02Jan2018 7 a.m. 7.07 2.10 52.90 0.00 Accuml. Values 176.65 132.60 1154.58 3086.50 Num. Valid Values 24 24 24 24 Avg. Values 7.36 5.53 48.11 128.60 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -13.69 213.35 48.11 265.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5189 definition: xcompl = 1 - (RELH_avg/100) TdC = -22.3726 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 = 0.2097 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7903 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.0985 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 = 1.1158 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.1439 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.045 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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