Detailed Weather Data for Project: COUN

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 29.30 3.00 89.00 47.10 08Nov2017 9 a.m. 33.10 1.00 83.71 215.50 08Nov2017 10 a.m. 34.99 2.70 83.01 372.10 08Nov2017 11 a.m. 41.65 0.20 63.04 496.50 08Nov2017 12 p.m. 45.10 1.20 53.04 563.40 08Nov2017 1 p.m. 49.71 0.40 43.53 575.30 08Nov2017 2 p.m. 51.10 1.30 34.73 526.60 08Nov2017 3 p.m. 52.11 3.40 31.40 422.60 08Nov2017 4 p.m. 53.31 3.30 30.07 275.60 08Nov2017 5 p.m. 52.18 4.40 31.10 103.00 08Nov2017 6 p.m. 48.67 3.20 35.75 0.60 08Nov2017 7 p.m. 37.74 6.40 54.36 0.00 08Nov2017 8 p.m. 42.93 2.90 45.93 0.00 08Nov2017 9 p.m. 40.28 3.20 50.70 0.00 08Nov2017 10 p.m. 38.41 2.50 55.34 0.00 08Nov2017 11 p.m. 35.64 1.90 61.77 0.00 09Nov2017 12 a.m. 35.08 4.40 62.46 0.00 09Nov2017 1 a.m. 36.34 5.60 60.62 0.00 09Nov2017 2 a.m. 35.82 4.90 63.40 0.00 09Nov2017 3 a.m. 36.07 0.60 64.09 0.00 09Nov2017 4 a.m. 35.26 1.60 63.68 0.00 09Nov2017 5 a.m. 33.60 1.30 69.70 0.00 09Nov2017 6 a.m. 33.85 1.80 69.48 0.00 09Nov2017 7 a.m. 35.49 3.40 69.93 0.00 Accuml. Values 967.71 64.60 1369.84 3598.30 Num. Valid Values 24 24 24 24 Avg. Values 40.32 2.69 57.08 149.93 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.62 103.94 57.08 309.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4292 definition: xcompl = 1 - (RELH_avg/100) TdC = -3.1330 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 = 0.4748 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5252 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.1107 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 = 3.6621 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.2609 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.086 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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