Detailed Weather Data for Project: PATM

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 49.71 9.29 97.59 49.00 07Nov2017 9 a.m. 50.47 9.66 95.38 59.00 07Nov2017 10 a.m. 49.91 9.77 95.08 86.00 07Nov2017 11 a.m. 51.01 9.52 90.56 134.00 07Nov2017 12 p.m. 52.00 9.80 87.14 221.00 07Nov2017 1 p.m. 54.41 9.78 81.03 171.00 07Nov2017 2 p.m. 54.54 10.86 80.79 201.00 07Nov2017 3 p.m. 52.99 13.22 85.98 184.00 07Nov2017 4 p.m. 50.58 12.30 92.57 46.00 07Nov2017 5 p.m. 49.37 12.08 92.21 6.00 07Nov2017 6 p.m. 48.49 11.41 93.80 -3.00 07Nov2017 7 p.m. 46.08 2.71 99.49 -2.00 07Nov2017 8 p.m. 47.50 10.78 95.20 -3.00 07Nov2017 9 p.m. 47.16 8.95 95.99 -2.00 07Nov2017 10 p.m. 46.62 9.47 98.68 -3.00 07Nov2017 11 p.m. 46.40 8.23 98.75 -2.00 08Nov2017 12 a.m. 46.40 6.11 98.93 -2.00 08Nov2017 1 a.m. 46.06 6.96 99.17 -3.00 08Nov2017 2 a.m. 45.52 6.06 99.35 -2.00 08Nov2017 3 a.m. 45.52 7.02 99.36 -2.00 08Nov2017 4 a.m. 44.98 8.22 99.43 -2.00 08Nov2017 5 a.m. 44.98 8.00 99.36 -2.00 08Nov2017 6 a.m. 45.19 6.65 99.49 -1.00 08Nov2017 7 a.m. 45.30 6.54 99.49 -1.00 Accuml. Values 1161.16 213.39 2274.82 1127.00 Num. Valid Values 24 24 24 24 Avg. Values 48.38 8.89 94.78 46.96 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.10 343.34 94.78 96.90 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0522 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.2854 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 = 0.5421 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4579 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0508 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 = 0.6217 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.9319 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.016 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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