Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 34.56 4.98 58.00 10.25 05Dec2017 9 a.m. 34.64 6.11 53.67 57.67 05Dec2017 10 a.m. 35.37 5.93 49.00 113.50 05Dec2017 11 a.m. 35.36 6.19 45.67 79.33 05Dec2017 12 p.m. 36.32 6.15 42.50 146.50 05Dec2017 1 p.m. 38.30 7.31 37.33 259.33 05Dec2017 2 p.m. 39.87 5.48 34.25 286.00 05Dec2017 3 p.m. 40.64 4.64 33.50 196.25 05Dec2017 4 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 5 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 6 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 7 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 8 p.m. 25.52 1.34 72.00 0.00 05Dec2017 9 p.m. 25.16 2.01 81.00 0.00 05Dec2017 10 p.m. 25.70 0.67 80.00 0.00 05Dec2017 11 p.m. 26.87 0.62 71.25 0.00 06Dec2017 12 a.m. 28.67 1.17 59.00 0.00 06Dec2017 1 a.m. 25.97 1.34 72.50 0.00 06Dec2017 2 a.m. 25.79 1.68 74.25 0.00 06Dec2017 3 a.m. 25.76 0.82 74.00 0.00 06Dec2017 4 a.m. 26.83 1.17 71.00 0.00 06Dec2017 5 a.m. 26.69 1.34 66.50 0.00 06Dec2017 6 a.m. 28.13 1.62 62.00 0.00 06Dec2017 7 a.m. 27.23 1.23 65.50 0.00 Accuml. Values 613.38 61.80 1202.92 1148.83 Num. Valid Values 20 20 20 20 Avg. Values 30.67 3.09 60.15 57.44 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -0.74 119.32 60.15 118.53 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3985 definition: xcompl = 1 - (RELH_avg/100) TdC = -7.4876 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 = 0.3921 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6079 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0051 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 = 2.3199 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.6064 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.039 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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