Detailed Weather Data for Project: DENI

Date Time TAIR WSPD RELH SRAD 01Jan2018 8 a.m. 12.52 10.10 63.31 25.00 01Jan2018 9 a.m. 13.30 11.29 63.91 229.00 01Jan2018 10 a.m. 14.29 11.95 60.62 417.00 01Jan2018 11 a.m. 17.26 8.35 56.04 561.00 01Jan2018 12 p.m. 19.99 7.30 49.57 645.00 01Jan2018 1 p.m. 20.98 8.30 45.54 662.00 01Jan2018 2 p.m. 22.96 10.92 40.05 613.00 01Jan2018 3 p.m. 24.40 8.85 37.67 500.00 01Jan2018 4 p.m. 26.71 8.18 37.97 330.00 01Jan2018 5 p.m. 24.49 7.16 36.75 122.00 01Jan2018 6 p.m. 22.75 6.11 40.78 2.00 01Jan2018 7 p.m. 23.63 5.40 43.89 0.00 01Jan2018 8 p.m. 20.10 7.01 49.26 0.00 01Jan2018 9 p.m. 19.56 4.74 52.99 0.00 01Jan2018 10 p.m. 18.36 3.94 53.72 0.00 01Jan2018 11 p.m. 17.91 3.65 57.51 0.00 02Jan2018 12 a.m. 17.15 3.23 59.40 0.00 02Jan2018 1 a.m. 16.70 2.98 61.05 0.00 02Jan2018 2 a.m. 16.14 3.09 67.21 0.00 02Jan2018 3 a.m. 15.49 3.74 66.91 0.00 02Jan2018 4 a.m. 15.49 2.79 65.93 0.00 02Jan2018 5 a.m. 14.18 3.30 69.41 0.00 02Jan2018 6 a.m. 16.59 3.08 71.12 0.00 02Jan2018 7 a.m. 17.02 4.80 65.99 0.00 Accuml. Values 448.00 150.26 1316.60 4106.00 Num. Valid Values 24 24 24 24 Avg. Values 18.67 6.26 54.86 171.08 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -7.41 241.77 54.86 353.03 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4514 definition: xcompl = 1 - (RELH_avg/100) TdC = -14.9444 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 = 0.2928 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7072 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.0761 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 = 1.5984 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.6939 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.071 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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