Detailed Weather Data for Project: KAWL

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 12.63 4.10 50.73 0.00 02Jan2018 9 a.m. 13.14 3.50 50.91 38.00 02Jan2018 10 a.m. 15.46 3.80 45.38 201.20 02Jan2018 11 a.m. 16.93 1.80 44.02 279.40 02Jan2018 12 p.m. 19.90 3.00 39.03 479.70 02Jan2018 1 p.m. 20.71 3.90 37.88 409.20 02Jan2018 2 p.m. 22.77 4.40 35.45 303.50 02Jan2018 3 p.m. 22.96 4.30 34.32 259.20 02Jan2018 4 p.m. 23.14 5.70 33.99 92.40 02Jan2018 5 p.m. 22.14 6.40 35.84 17.60 02Jan2018 6 p.m. 21.34 7.10 36.31 0.00 02Jan2018 7 p.m. 31.80 6.20 56.28 0.00 02Jan2018 8 p.m. 19.04 5.10 40.13 0.00 02Jan2018 9 p.m. 16.84 4.60 44.92 0.00 02Jan2018 10 p.m. 15.73 5.20 47.60 0.00 02Jan2018 11 p.m. 14.07 6.20 52.65 0.00 03Jan2018 12 a.m. 13.39 6.80 56.53 0.00 03Jan2018 1 a.m. 14.14 7.80 55.76 0.00 03Jan2018 2 a.m. 14.74 7.20 55.60 0.00 03Jan2018 3 a.m. 13.32 5.80 58.40 0.00 03Jan2018 4 a.m. 12.76 4.40 60.96 0.00 03Jan2018 5 a.m. 12.36 3.00 67.27 0.00 03Jan2018 6 a.m. 13.75 2.60 62.95 0.00 03Jan2018 7 a.m. 16.74 6.40 60.74 0.00 Accuml. Values 419.81 119.30 1163.65 2080.20 Num. Valid Values 24 24 24 24 Avg. Values 17.49 4.97 48.49 86.67 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -8.06 191.95 48.49 178.86 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5151 definition: xcompl = 1 - (RELH_avg/100) TdC = -17.0781 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 = 0.2836 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7164 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.4317 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 = 1.7389 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.5892 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.050 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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