Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 6.31 1.80 62.45 0.00 02Jan2018 9 a.m. 6.91 1.70 62.61 40.80 02Jan2018 10 a.m. 8.85 1.30 58.31 153.90 02Jan2018 11 a.m. 13.23 1.60 47.43 379.20 02Jan2018 12 p.m. 15.48 2.20 41.41 196.30 02Jan2018 1 p.m. 16.66 2.20 44.85 176.70 02Jan2018 2 p.m. 18.79 5.10 38.49 237.10 02Jan2018 3 p.m. 20.39 6.50 34.48 216.50 02Jan2018 4 p.m. 21.25 5.70 35.03 102.10 02Jan2018 5 p.m. 21.94 5.50 34.44 34.00 02Jan2018 6 p.m. 20.03 4.30 36.86 0.10 02Jan2018 7 p.m. 25.95 4.40 59.79 0.00 02Jan2018 8 p.m. 15.46 5.00 45.41 0.00 02Jan2018 9 p.m. 14.77 4.50 48.89 0.00 02Jan2018 10 p.m. 14.54 3.70 50.38 0.00 02Jan2018 11 p.m. 15.13 4.30 50.39 41.10 03Jan2018 12 a.m. 16.23 7.70 48.64 0.00 03Jan2018 1 a.m. 17.38 7.10 47.30 0.00 03Jan2018 2 a.m. 19.26 6.60 44.28 0.00 03Jan2018 3 a.m. 17.80 4.90 47.60 0.00 03Jan2018 4 a.m. 15.49 2.30 54.40 0.00 03Jan2018 5 a.m. 16.16 3.70 54.83 0.00 03Jan2018 6 a.m. 17.29 4.50 58.21 0.00 03Jan2018 7 a.m. 18.27 7.00 60.97 0.00 Accuml. Values 393.58 103.60 1167.45 1577.80 Num. Valid Values 24 24 24 24 Avg. Values 16.40 4.32 48.64 65.74 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -8.67 166.69 48.64 135.66 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5136 definition: xcompl = 1 - (RELH_avg/100) TdC = -17.5994 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 = 0.2751 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7249 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0547 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 = 1.6531 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.4060 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.041 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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