Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 43.30 0.54 77.66 35.00 06Mar2018 9 a.m. 48.24 0.60 46.15 382.00 06Mar2018 10 a.m. 53.19 11.48 23.50 568.00 06Mar2018 11 a.m. 55.49 8.49 15.69 704.00 06Mar2018 12 p.m. 56.48 9.78 16.30 786.00 06Mar2018 1 p.m. 58.01 9.87 16.42 797.00 06Mar2018 2 p.m. 60.21 10.11 13.73 745.00 06Mar2018 3 p.m. 61.20 8.53 12.27 630.00 06Mar2018 4 p.m. 61.11 7.97 13.55 463.00 06Mar2018 5 p.m. 59.43 11.20 13.12 153.00 06Mar2018 6 p.m. 57.90 8.91 15.69 23.00 06Mar2018 7 p.m. 48.56 6.00 34.73 0.00 06Mar2018 8 p.m. 54.61 11.94 18.31 0.00 06Mar2018 9 p.m. 52.74 13.66 26.31 0.00 06Mar2018 10 p.m. 48.02 16.51 33.63 0.00 06Mar2018 11 p.m. 45.05 16.37 38.22 0.00 07Mar2018 12 a.m. 42.30 14.69 42.55 0.00 07Mar2018 1 a.m. 41.09 12.47 47.86 0.00 07Mar2018 2 a.m. 39.22 12.02 48.35 0.00 07Mar2018 3 a.m. 38.03 9.95 49.27 0.00 07Mar2018 4 a.m. 37.24 9.34 55.30 0.00 07Mar2018 5 a.m. 36.48 9.15 58.85 0.00 07Mar2018 6 a.m. 33.30 0.77 65.51 0.00 07Mar2018 7 a.m. 31.75 0.15 68.25 7.00 Accuml. Values 1162.92 220.50 851.22 5293.00 Num. Valid Values 24 24 24 24 Avg. Values 48.46 9.19 35.47 220.54 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.14 354.78 35.47 455.09 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6453 definition: xcompl = 1 - (RELH_avg/100) TdC = -5.4871 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 = 0.5427 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4573 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.1758 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 = 7.5560 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 8.5887 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.244 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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