Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 12.67 1.90 57.30 0.00 02Jan2018 9 a.m. 12.94 0.70 56.85 15.90 02Jan2018 10 a.m. 14.20 0.40 57.29 80.90 02Jan2018 11 a.m. 15.91 0.20 56.26 154.70 02Jan2018 12 p.m. 17.28 0.60 54.45 185.50 02Jan2018 1 p.m. 18.12 0.50 51.80 176.50 02Jan2018 2 p.m. 19.45 0.50 46.80 196.10 02Jan2018 3 p.m. 20.68 0.60 45.01 174.70 02Jan2018 4 p.m. 22.08 0.70 42.49 166.80 02Jan2018 5 p.m. 21.97 0.40 42.43 92.00 02Jan2018 6 p.m. 20.61 1.10 44.07 5.80 02Jan2018 7 p.m. 37.54 0.60 43.30 0.00 02Jan2018 8 p.m. 16.70 2.60 47.69 0.00 02Jan2018 9 p.m. 16.09 2.80 50.03 0.00 02Jan2018 10 p.m. 15.96 2.50 51.37 0.00 02Jan2018 11 p.m. 15.55 2.60 53.40 0.00 03Jan2018 12 a.m. 16.81 3.40 51.31 0.00 03Jan2018 1 a.m. 18.16 5.20 49.81 0.00 03Jan2018 2 a.m. 18.46 6.20 50.34 0.00 03Jan2018 3 a.m. 20.07 2.40 50.34 0.00 03Jan2018 4 a.m. 21.83 1.60 49.30 0.00 03Jan2018 5 a.m. 23.00 2.20 48.83 0.00 03Jan2018 6 a.m. 20.43 1.70 54.65 0.00 03Jan2018 7 a.m. 20.80 1.90 54.81 0.00 Accuml. Values 457.30 43.30 1209.93 1248.90 Num. Valid Values 24 24 24 24 Avg. Values 19.05 1.80 50.41 52.04 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -7.19 69.67 50.41 107.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4959 definition: xcompl = 1 - (RELH_avg/100) TdC = -15.7934 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 = 0.2959 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7041 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.1668 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 = 1.7890 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.0378 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.027 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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