Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 46.90 0.94 32.29 22.00 06Mar2018 9 a.m. 49.77 2.15 31.62 329.00 06Mar2018 10 a.m. 53.94 4.54 30.22 532.00 06Mar2018 11 a.m. 54.93 2.16 25.09 695.00 06Mar2018 12 p.m. 56.70 2.24 24.54 803.00 06Mar2018 1 p.m. 56.14 2.25 20.02 841.00 06Mar2018 2 p.m. 58.57 5.40 24.18 807.00 06Mar2018 3 p.m. 57.45 0.96 28.63 674.00 06Mar2018 4 p.m. 57.36 1.53 25.89 510.00 06Mar2018 5 p.m. 55.60 0.29 27.17 319.00 06Mar2018 6 p.m. 49.55 0.25 36.14 108.00 06Mar2018 7 p.m. 49.77 0.20 34.49 6.00 06Mar2018 8 p.m. 43.84 0.22 47.67 0.00 06Mar2018 9 p.m. 42.53 0.37 49.51 0.00 06Mar2018 10 p.m. 41.76 0.43 53.17 0.00 06Mar2018 11 p.m. 39.54 0.70 52.68 0.00 07Mar2018 12 a.m. 38.57 1.04 56.65 1.00 07Mar2018 1 a.m. 38.44 0.90 63.18 0.00 07Mar2018 2 a.m. 37.13 0.50 62.45 0.00 07Mar2018 3 a.m. 36.25 0.69 65.80 0.00 07Mar2018 4 a.m. 35.60 0.43 67.76 1.00 07Mar2018 5 a.m. 34.50 1.15 69.95 0.00 07Mar2018 6 a.m. 33.96 0.19 70.82 0.00 07Mar2018 7 a.m. 33.51 3.45 71.85 2.00 Accuml. Values 1102.31 32.98 1071.77 5650.00 Num. Valid Values 24 24 24 24 Avg. Values 45.93 1.37 44.66 235.42 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.74 53.06 44.66 485.79 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5534 definition: xcompl = 1 - (RELH_avg/100) TdC = -3.6306 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 = 0.5220 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4780 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.4718 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 = 5.8865 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.7309 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.143 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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