Detailed Weather Data for Project: DENI

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 17.15 5.21 62.39 11.00 02Jan2018 9 a.m. 18.68 5.08 59.82 84.00 02Jan2018 10 a.m. 20.10 2.86 54.82 134.00 02Jan2018 11 a.m. 19.67 2.96 50.67 195.00 02Jan2018 12 p.m. 21.76 2.57 43.22 266.00 02Jan2018 1 p.m. 21.87 5.90 39.26 262.00 02Jan2018 2 p.m. 23.52 4.28 40.54 195.00 02Jan2018 3 p.m. 23.41 4.83 40.42 135.00 02Jan2018 4 p.m. 23.63 4.64 37.24 66.00 02Jan2018 5 p.m. 23.52 6.62 38.58 26.00 02Jan2018 6 p.m. 23.74 6.78 40.54 0.00 02Jan2018 7 p.m. 43.18 14.53 42.80 0.00 02Jan2018 8 p.m. 23.63 5.63 44.81 0.00 02Jan2018 9 p.m. 25.83 4.60 49.76 0.00 02Jan2018 10 p.m. 24.94 8.69 49.32 0.00 02Jan2018 11 p.m. 24.84 8.40 58.37 0.00 03Jan2018 12 a.m. 25.48 7.53 60.74 0.00 03Jan2018 1 a.m. 21.20 7.35 65.63 0.00 03Jan2018 2 a.m. 22.53 8.70 64.77 0.00 03Jan2018 3 a.m. 22.53 9.07 66.12 0.00 03Jan2018 4 a.m. 18.79 8.83 73.57 0.00 03Jan2018 5 a.m. 20.43 9.44 72.15 0.00 03Jan2018 6 a.m. 22.41 11.89 63.48 0.00 03Jan2018 7 a.m. 19.89 7.06 69.83 0.00 Accuml. Values 552.72 163.45 1288.85 1374.00 Num. Valid Values 24 24 24 24 Avg. Values 23.03 6.81 53.70 57.25 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -4.98 262.99 53.70 118.14 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4630 definition: xcompl = 1 - (RELH_avg/100) TdC = -12.9436 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 = 0.3280 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6720 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0532 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 = 1.9745 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.1521 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.056 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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