Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 31Dec2017 8 a.m. 16.25 6.88 81.50 8.50 31Dec2017 9 a.m. 15.98 7.46 79.33 55.67 31Dec2017 10 a.m. 16.12 8.89 72.75 189.00 31Dec2017 11 a.m. 18.74 9.02 62.33 418.33 31Dec2017 12 p.m. 20.44 8.61 50.25 523.75 31Dec2017 1 p.m. 22.10 7.90 40.67 546.33 31Dec2017 2 p.m. 22.73 9.06 35.00 504.75 31Dec2017 3 p.m. 22.46 10.18 32.75 388.50 31Dec2017 4 p.m. 22.10 8.95 31.25 254.25 31Dec2017 5 p.m. 20.39 7.44 32.50 90.25 31Dec2017 6 p.m. 16.52 7.16 38.00 0.00 31Dec2017 7 p.m. 15.26 7.16 44.00 0.00 31Dec2017 8 p.m. 14.18 7.61 48.00 0.00 31Dec2017 9 p.m. 13.37 6.49 51.50 0.00 31Dec2017 10 p.m. 12.56 5.97 55.33 0.00 31Dec2017 11 p.m. 11.80 4.75 58.00 0.00 01Jan2018 12 a.m. 10.99 5.42 59.25 0.00 01Jan2018 1 a.m. 10.00 4.42 61.75 0.00 01Jan2018 2 a.m. 9.01 4.14 64.25 0.00 01Jan2018 3 a.m. 8.30 3.95 66.00 0.00 01Jan2018 4 a.m. 7.43 4.25 67.75 0.00 01Jan2018 5 a.m. 6.71 4.14 69.50 0.00 01Jan2018 6 a.m. 5.72 3.24 73.00 0.00 01Jan2018 7 a.m. 5.09 4.81 74.50 0.00 Accuml. Values 344.25 157.90 1349.16 2979.33 Num. Valid Values 24 24 24 24 Avg. Values 14.34 6.58 56.22 124.14 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -9.81 254.06 56.22 256.16 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4378 definition: xcompl = 1 - (RELH_avg/100) TdC = -16.8967 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 = 0.2595 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7405 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.0878 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 = 1.2838 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.4413 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.053 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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