Detailed Weather Data for Project: PATM

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 45.52 6.13 99.49 21.00 08Nov2017 9 a.m. 46.29 4.94 99.41 26.00 08Nov2017 10 a.m. 46.40 3.62 99.41 21.00 08Nov2017 11 a.m. 46.85 3.64 99.49 29.00 08Nov2017 12 p.m. 47.50 5.64 99.49 40.00 08Nov2017 1 p.m. 47.39 6.61 99.43 41.00 08Nov2017 2 p.m. 47.05 7.80 99.47 40.00 08Nov2017 3 p.m. 46.96 6.90 99.49 42.00 08Nov2017 4 p.m. 47.17 4.62 99.43 19.00 08Nov2017 5 p.m. 46.94 4.63 99.47 4.00 08Nov2017 6 p.m. 46.06 6.40 99.35 -1.00 08Nov2017 7 p.m. 52.11 1.49 95.75 -3.00 08Nov2017 8 p.m. 45.86 2.26 99.43 -2.00 08Nov2017 9 p.m. 45.73 1.49 99.41 -2.00 08Nov2017 10 p.m. 46.51 3.52 99.47 -2.00 08Nov2017 11 p.m. 46.17 4.01 99.54 -2.00 09Nov2017 12 a.m. 46.06 3.78 99.41 -2.00 09Nov2017 1 a.m. 45.95 2.38 99.47 -2.00 09Nov2017 2 a.m. 46.29 1.19 99.49 -2.00 09Nov2017 3 a.m. 46.40 2.53 99.47 -2.00 09Nov2017 4 a.m. 45.75 2.94 99.49 -1.00 09Nov2017 5 a.m. 45.84 2.44 99.47 -2.00 09Nov2017 6 a.m. 44.74 2.64 99.41 -2.00 09Nov2017 7 a.m. 42.89 2.53 99.43 2.00 Accuml. Values 1114.43 94.13 2383.17 260.00 Num. Valid Values 24 24 24 24 Avg. Values 46.43 3.92 99.30 10.83 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.02 151.46 99.30 22.35 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0070 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.9107 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 = 0.5261 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4739 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.8071 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 = 0.0792 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.0922 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.000 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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