Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 52.07 8.56 66.29 30.00 02Dec2017 9 a.m. 55.81 9.64 64.28 195.00 02Dec2017 10 a.m. 59.54 7.32 62.93 330.00 02Dec2017 11 a.m. 64.27 5.84 58.42 411.00 02Dec2017 12 p.m. 68.56 5.34 54.57 529.00 02Dec2017 1 p.m. 73.40 5.98 52.31 532.00 02Dec2017 2 p.m. 75.25 6.28 51.46 460.00 02Dec2017 3 p.m. 76.24 9.54 51.09 354.00 02Dec2017 4 p.m. 75.25 9.54 52.56 186.00 02Dec2017 5 p.m. 73.72 3.98 55.18 49.00 02Dec2017 6 p.m. 70.75 3.90 60.86 1.00 02Dec2017 7 p.m. 71.20 11.99 55.67 0.00 02Dec2017 8 p.m. 64.94 4.19 72.88 0.00 02Dec2017 9 p.m. 64.27 4.99 74.41 0.00 02Dec2017 10 p.m. 61.75 3.96 81.13 0.00 02Dec2017 11 p.m. 59.32 4.01 86.19 0.00 03Dec2017 12 a.m. 59.67 4.53 85.34 0.00 03Dec2017 1 a.m. 58.89 3.89 87.23 0.00 03Dec2017 2 a.m. 59.00 2.47 87.96 0.00 03Dec2017 3 a.m. 57.24 3.32 91.69 0.00 03Dec2017 4 a.m. 58.01 4.80 89.92 0.00 03Dec2017 5 a.m. 57.90 4.01 90.28 0.00 03Dec2017 6 a.m. 57.02 5.89 92.05 0.00 03Dec2017 7 a.m. 57.02 7.42 92.36 0.00 Accuml. Values 1531.13 141.39 1717.06 3077.00 Num. Valid Values 24 24 24 24 Avg. Values 63.80 5.89 71.54 128.21 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.66 227.50 71.54 264.56 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2846 definition: xcompl = 1 - (RELH_avg/100) TdC = 12.5355 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 = 0.6587 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3413 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.2270 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 = 5.6783 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.9777 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.125 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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