Detailed Weather Data for Project: TORO

Date Time TAIR WSPD RELH SRAD 31Dec2017 8 a.m. 7.52 5.50 65.81 3.30 31Dec2017 9 a.m. 7.52 5.30 63.08 144.20 31Dec2017 10 a.m. 9.88 5.20 57.52 272.10 31Dec2017 11 a.m. 11.26 5.30 54.45 263.40 31Dec2017 12 p.m. 12.63 4.60 55.13 406.50 31Dec2017 1 p.m. 13.98 4.90 52.40 465.60 31Dec2017 2 p.m. 14.92 4.60 49.23 443.00 31Dec2017 3 p.m. 15.67 4.90 46.77 366.70 31Dec2017 4 p.m. 16.09 5.60 45.71 223.40 31Dec2017 5 p.m. 14.41 5.30 47.36 52.80 31Dec2017 6 p.m. 12.33 4.20 51.15 0.00 31Dec2017 7 p.m. 11.57 3.90 38.71 0.00 31Dec2017 8 p.m. 9.37 2.90 57.36 0.00 31Dec2017 9 p.m. 8.17 3.60 59.98 0.00 31Dec2017 10 p.m. 6.75 3.80 62.87 0.00 31Dec2017 11 p.m. 5.56 3.40 65.82 0.00 01Jan2018 12 a.m. 4.42 4.10 68.78 0.00 01Jan2018 1 a.m. 3.33 4.10 69.22 0.00 01Jan2018 2 a.m. 2.07 4.30 70.53 0.00 01Jan2018 3 a.m. 1.11 3.40 70.24 0.00 01Jan2018 4 a.m. 0.43 3.20 71.04 0.00 01Jan2018 5 a.m. -0.38 3.90 71.85 0.00 01Jan2018 6 a.m. -1.10 3.90 72.31 0.00 01Jan2018 7 a.m. -1.77 3.90 70.33 0.00 Accuml. Values 185.74 103.80 1437.65 2641.00 Num. Valid Values 24 24 24 24 Avg. Values 7.74 4.33 59.90 110.04 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -13.48 167.01 59.90 227.07 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4010 definition: xcompl = 1 - (RELH_avg/100) TdC = -19.5941 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 = 0.2122 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7878 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.7702 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 = 0.8732 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.8026 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.031 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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