Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 01Jan2018 8 a.m. 7.47 2.89 81.50 5.00 01Jan2018 9 a.m. 9.23 2.31 71.43 65.00 01Jan2018 10 a.m. 13.17 2.59 68.49 295.00 01Jan2018 11 a.m. 16.38 1.23 62.94 460.00 01Jan2018 12 p.m. 16.92 0.84 55.92 554.00 01Jan2018 1 p.m. 19.44 0.50 55.18 588.00 01Jan2018 2 p.m. 21.76 0.22 50.48 553.00 01Jan2018 3 p.m. 22.51 0.28 39.92 454.00 01Jan2018 4 p.m. 24.06 0.95 43.16 304.00 01Jan2018 5 p.m. 21.52 1.19 41.81 125.00 01Jan2018 6 p.m. 19.22 2.01 49.20 4.00 01Jan2018 7 p.m. 25.05 0.85 46.03 0.00 01Jan2018 8 p.m. 17.58 1.57 54.02 0.00 01Jan2018 9 p.m. 17.24 0.44 53.66 0.00 01Jan2018 10 p.m. 17.35 0.17 55.61 0.00 01Jan2018 11 p.m. 17.13 0.11 57.07 0.00 02Jan2018 12 a.m. 16.36 0.27 57.26 0.00 02Jan2018 1 a.m. 15.39 0.30 58.66 0.00 02Jan2018 2 a.m. 16.70 0.10 63.12 0.00 02Jan2018 3 a.m. 16.59 0.13 64.40 0.00 02Jan2018 4 a.m. 15.39 0.33 64.40 0.00 02Jan2018 5 a.m. 15.60 0.58 62.02 0.00 02Jan2018 6 a.m. 16.70 0.67 64.22 0.00 02Jan2018 7 a.m. 16.59 0.72 59.22 0.00 Accuml. Values 415.34 21.25 1379.72 3407.00 Num. Valid Values 24 24 24 24 Avg. Values 17.31 0.89 57.49 141.96 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -8.16 34.19 57.49 292.93 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4251 definition: xcompl = 1 - (RELH_avg/100) TdC = -15.0733 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 = 0.2821 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7179 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.4678 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 = 1.4176 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.7058 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.036 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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