Detailed Weather Data for Project: PATM

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 60.24 2.57 92.15 28.00 06Nov2017 9 a.m. 62.01 1.12 88.42 79.00 06Nov2017 10 a.m. 63.43 4.01 86.28 94.00 06Nov2017 11 a.m. 63.64 5.71 84.09 142.00 06Nov2017 12 p.m. 64.20 7.38 85.06 178.00 06Nov2017 1 p.m. 63.99 5.32 94.35 168.00 06Nov2017 2 p.m. 64.09 8.74 95.69 157.00 06Nov2017 3 p.m. 64.20 7.31 92.39 123.00 06Nov2017 4 p.m. 64.53 8.79 85.12 115.00 06Nov2017 5 p.m. 62.33 6.50 89.22 66.00 06Nov2017 6 p.m. 59.81 7.67 92.94 -2.00 06Nov2017 7 p.m. 47.84 10.00 94.72 -2.00 06Nov2017 8 p.m. 55.63 5.39 98.99 -3.00 06Nov2017 9 p.m. 55.18 6.88 98.99 -3.00 06Nov2017 10 p.m. 54.41 8.78 99.05 -3.00 06Nov2017 11 p.m. 53.22 7.60 98.82 -3.00 07Nov2017 12 a.m. 52.66 10.15 98.74 -3.00 07Nov2017 1 a.m. 52.00 7.42 98.74 -2.00 07Nov2017 2 a.m. 51.12 4.84 98.86 -2.00 07Nov2017 3 a.m. 50.79 5.45 98.74 -2.00 07Nov2017 4 a.m. 50.68 5.41 98.44 -2.00 07Nov2017 5 a.m. 49.91 7.14 98.80 -2.00 07Nov2017 6 a.m. 48.60 6.78 98.88 -2.00 07Nov2017 7 a.m. 48.92 7.26 98.80 1.00 Accuml. Values 1363.44 158.22 2266.28 1120.00 Num. Valid Values 24 24 24 24 Avg. Values 56.81 6.59 94.43 46.67 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.78 254.58 94.43 96.30 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0557 definition: xcompl = 1 - (RELH_avg/100) TdC = 12.8821 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 = 0.6083 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3917 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0257 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 = 0.9000 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.0557 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.017 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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