Detailed Weather Data for Project: DENI

Date Time TAIR WSPD RELH SRAD 31Dec2017 8 a.m. 24.73 13.83 84.75 6.00 31Dec2017 9 a.m. 23.29 12.42 83.09 30.00 31Dec2017 10 a.m. 23.18 14.13 86.57 89.00 31Dec2017 11 a.m. 22.86 16.00 80.84 125.00 31Dec2017 12 p.m. 21.87 17.62 71.86 163.00 31Dec2017 1 p.m. 22.86 17.13 67.03 194.00 31Dec2017 2 p.m. 23.74 15.82 65.45 173.00 31Dec2017 3 p.m. 23.20 15.18 55.01 146.00 31Dec2017 4 p.m. 23.85 15.65 51.47 94.00 31Dec2017 5 p.m. 24.62 13.48 44.32 33.00 31Dec2017 6 p.m. 25.50 11.69 42.67 1.00 31Dec2017 7 p.m. 21.20 7.01 44.75 0.00 31Dec2017 8 p.m. 22.42 13.56 42.80 0.00 31Dec2017 9 p.m. 21.65 12.62 42.25 0.00 31Dec2017 10 p.m. 20.55 13.97 45.54 0.00 31Dec2017 11 p.m. 19.24 12.67 43.77 0.00 01Jan2018 12 a.m. 19.00 14.43 48.96 0.00 01Jan2018 1 a.m. 17.82 19.32 51.72 0.00 01Jan2018 2 a.m. 17.58 10.86 54.40 0.00 01Jan2018 3 a.m. 15.84 7.88 56.42 0.00 01Jan2018 4 a.m. 15.73 9.73 57.27 0.00 01Jan2018 5 a.m. 14.95 10.49 61.48 0.00 01Jan2018 6 a.m. 13.62 10.58 61.29 0.00 01Jan2018 7 a.m. 12.74 10.62 62.88 0.00 Accuml. Values 492.02 316.69 1406.59 1054.00 Num. Valid Values 24 24 24 24 Avg. Values 20.50 13.20 58.61 43.92 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -6.39 509.55 58.61 90.62 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4139 definition: xcompl = 1 - (RELH_avg/100) TdC = -13.1592 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 = 0.3074 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6926 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2990 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 = 1.5823 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.8418 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.074 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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