Detailed Weather Data for Project: COUN

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 8.31 3.70 70.66 0.00 30Dec2017 9 a.m. 8.06 6.20 69.52 80.80 30Dec2017 10 a.m. 8.80 8.50 65.67 174.50 30Dec2017 11 a.m. 9.90 7.10 63.35 246.00 30Dec2017 12 p.m. 11.25 6.30 61.00 322.30 30Dec2017 1 p.m. 12.69 5.50 57.77 354.40 30Dec2017 2 p.m. 13.48 8.10 53.53 367.50 30Dec2017 3 p.m. 14.05 8.40 48.72 353.40 30Dec2017 4 p.m. 13.48 8.50 47.50 241.80 30Dec2017 5 p.m. 12.47 7.60 49.23 71.30 30Dec2017 6 p.m. 10.62 8.10 55.93 0.00 30Dec2017 7 p.m. 5.90 2.70 59.04 0.00 30Dec2017 8 p.m. 8.33 6.10 63.01 0.00 30Dec2017 9 p.m. 7.92 8.50 65.10 0.00 30Dec2017 10 p.m. 7.59 10.20 63.71 0.00 30Dec2017 11 p.m. 7.48 8.80 60.62 0.00 31Dec2017 12 a.m. 7.59 4.80 63.32 0.00 31Dec2017 1 a.m. 6.57 7.20 66.01 0.00 31Dec2017 2 a.m. 6.04 6.40 65.35 0.00 31Dec2017 3 a.m. 5.70 6.90 64.58 0.00 31Dec2017 4 a.m. 5.65 3.40 64.97 0.00 31Dec2017 5 a.m. 5.18 3.90 64.54 0.00 31Dec2017 6 a.m. 4.64 2.40 63.96 0.00 31Dec2017 7 a.m. 5.11 2.30 61.45 0.00 Accuml. Values 206.80 151.60 1468.54 2212.00 Num. Valid Values 24 24 24 24 Avg. Values 8.62 6.32 61.19 92.17 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -12.99 243.92 61.19 190.19 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3881 definition: xcompl = 1 - (RELH_avg/100) TdC = -18.8804 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 = 0.2182 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7818 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.4641 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 = 0.8792 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.0066 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.035 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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