Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. -25.28 4.47 8.85 7.00 05Dec2017 9 a.m. -24.84 3.22 9.03 37.00 05Dec2017 10 a.m. -24.84 3.08 9.16 48.00 05Dec2017 11 a.m. -24.39 2.75 8.91 64.00 05Dec2017 12 p.m. -23.62 1.87 8.97 159.00 05Dec2017 1 p.m. -24.84 1.80 8.91 270.00 05Dec2017 2 p.m. -23.75 0.62 9.22 329.00 05Dec2017 3 p.m. -23.30 0.48 9.22 252.00 05Dec2017 4 p.m. -22.76 0.61 8.61 174.00 05Dec2017 5 p.m. -24.84 0.19 8.91 71.00 05Dec2017 6 p.m. -24.50 0.21 8.97 1.00 05Dec2017 7 p.m. 49.89 1.28 43.41 0.00 05Dec2017 8 p.m. -24.29 0.96 8.97 1.00 05Dec2017 9 p.m. -24.29 0.93 8.85 0.00 05Dec2017 10 p.m. -24.95 0.91 8.85 0.00 05Dec2017 11 p.m. -24.39 1.37 8.91 0.00 06Dec2017 12 a.m. -24.61 0.86 8.91 0.00 06Dec2017 1 a.m. -24.61 0.65 8.85 0.00 06Dec2017 2 a.m. -24.61 0.56 8.97 0.00 06Dec2017 3 a.m. -24.50 1.52 8.85 0.00 06Dec2017 4 a.m. -24.18 2.59 8.97 0.00 06Dec2017 5 a.m. -24.39 3.01 8.85 0.00 06Dec2017 6 a.m. -24.29 2.30 8.85 0.00 06Dec2017 7 a.m. -24.29 2.37 8.91 0.00 Accuml. Values -510.47 38.61 248.91 1413.00 Num. Valid Values 24 24 24 24 Avg. Values -21.27 1.61 10.37 58.88 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -29.59 62.12 10.37 121.49 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.8963 definition: xcompl = 1 - (RELH_avg/100) TdC = -50.9755 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 = 0.0691 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.9309 definition: del_lambda2 = 1 - del_lambda1 Qn = -1.#IND 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 = 0.4488 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.2965 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: -1.#IO inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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