Detailed Weather Data for Project: BIGH

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 41.49 0.60 84.45 16.20 02Dec2017 9 a.m. 44.56 0.80 73.60 159.30 02Dec2017 10 a.m. 49.89 0.90 54.69 311.10 02Dec2017 11 a.m. 54.16 4.40 48.02 432.70 02Dec2017 12 p.m. 56.08 2.70 47.51 504.80 02Dec2017 1 p.m. 56.25 2.70 49.23 518.90 02Dec2017 2 p.m. 59.20 0.90 44.86 465.80 02Dec2017 3 p.m. 60.19 1.20 45.26 360.40 02Dec2017 4 p.m. 60.39 4.10 46.96 216.90 02Dec2017 5 p.m. 59.74 5.00 48.23 33.00 02Dec2017 6 p.m. 56.26 1.80 56.62 0.00 02Dec2017 7 p.m. 62.24 10.30 68.28 0.00 02Dec2017 8 p.m. 51.44 1.30 70.88 0.00 02Dec2017 9 p.m. 50.45 1.30 74.64 0.00 02Dec2017 10 p.m. 51.10 1.40 68.36 0.00 02Dec2017 11 p.m. 50.74 2.10 68.56 0.00 03Dec2017 12 a.m. 50.79 3.10 64.23 0.00 03Dec2017 1 a.m. 50.40 3.10 66.00 0.00 03Dec2017 2 a.m. 48.92 4.60 70.65 0.00 03Dec2017 3 a.m. 47.53 3.80 73.96 0.00 03Dec2017 4 a.m. 47.07 3.20 75.95 0.00 03Dec2017 5 a.m. 45.46 2.30 81.83 0.00 03Dec2017 6 a.m. 46.13 2.80 84.29 0.00 03Dec2017 7 a.m. 46.99 3.50 83.81 0.00 Accuml. Values 1247.47 67.90 1550.87 3019.10 Num. Valid Values 24 24 24 24 Avg. Values 51.98 2.83 64.62 125.80 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 11.10 109.25 64.62 259.58 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3538 definition: xcompl = 1 - (RELH_avg/100) TdC = 4.7447 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 = 0.5710 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4290 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.8328 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 = 4.6510 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.8498 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.089 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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