Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 31Dec2017 8 a.m. 13.41 6.30 69.93 0.00 31Dec2017 9 a.m. 13.35 6.20 69.64 66.90 31Dec2017 10 a.m. 14.43 7.00 62.39 322.30 31Dec2017 11 a.m. 15.03 7.30 56.49 421.40 31Dec2017 12 p.m. 15.71 6.70 51.40 566.10 31Dec2017 1 p.m. 17.01 6.00 47.11 537.10 31Dec2017 2 p.m. 17.98 5.80 43.29 503.10 31Dec2017 3 p.m. 18.21 5.30 41.80 374.80 31Dec2017 4 p.m. 18.75 5.30 40.17 288.30 31Dec2017 5 p.m. 18.41 3.60 40.77 133.70 31Dec2017 6 p.m. 17.51 4.60 45.53 6.70 31Dec2017 7 p.m. 13.28 2.70 43.59 0.00 31Dec2017 8 p.m. 15.26 3.40 49.49 0.00 31Dec2017 9 p.m. 13.91 2.90 51.45 0.00 31Dec2017 10 p.m. 13.10 2.90 52.15 0.00 31Dec2017 11 p.m. 12.54 4.10 54.47 0.00 01Jan2018 12 a.m. 11.43 4.40 57.58 0.00 01Jan2018 1 a.m. 10.54 4.50 58.90 0.00 01Jan2018 2 a.m. 9.84 4.70 61.77 0.00 01Jan2018 3 a.m. 9.21 4.90 65.72 0.00 01Jan2018 4 a.m. 7.79 6.10 67.97 0.00 01Jan2018 5 a.m. 6.82 5.70 71.00 0.00 01Jan2018 6 a.m. 5.74 5.10 73.83 0.00 01Jan2018 7 a.m. 4.51 4.20 75.61 0.00 Accuml. Values 313.77 119.70 1352.05 3220.40 Num. Valid Values 24 24 24 24 Avg. Values 13.07 4.99 56.34 134.18 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -10.51 192.60 56.34 276.89 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4366 definition: xcompl = 1 - (RELH_avg/100) TdC = -17.5338 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 = 0.2500 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7500 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.2613 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 = 1.2104 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.1576 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.047 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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