Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 34.95 4.72 62.09 30.00 07Mar2018 9 a.m. 36.48 6.63 56.65 389.00 07Mar2018 10 a.m. 39.00 6.89 51.58 575.00 07Mar2018 11 a.m. 41.09 6.17 53.42 665.00 07Mar2018 12 p.m. 43.95 7.09 43.77 628.00 07Mar2018 1 p.m. 45.93 7.52 39.37 786.00 07Mar2018 2 p.m. 49.33 6.53 36.50 731.00 07Mar2018 3 p.m. 50.99 7.49 33.58 616.00 07Mar2018 4 p.m. 51.87 4.92 33.58 425.00 07Mar2018 5 p.m. 51.76 6.45 28.39 161.00 07Mar2018 6 p.m. 50.22 6.72 33.57 23.00 07Mar2018 7 p.m. 51.64 0.45 44.01 1.00 07Mar2018 8 p.m. 46.80 4.93 44.81 0.00 07Mar2018 9 p.m. 46.26 5.18 45.17 1.00 07Mar2018 10 p.m. 44.94 4.07 49.51 0.00 07Mar2018 11 p.m. 37.13 0.96 73.13 0.00 08Mar2018 12 a.m. 34.50 1.00 82.66 0.00 08Mar2018 1 a.m. 33.62 0.13 87.90 0.00 08Mar2018 2 a.m. 31.96 0.12 97.36 0.00 08Mar2018 3 a.m. 32.85 0.04 98.89 0.00 08Mar2018 4 a.m. 33.30 0.25 98.95 0.00 08Mar2018 5 a.m. 38.57 0.52 95.48 0.00 08Mar2018 6 a.m. 38.44 0.33 97.12 0.00 08Mar2018 7 a.m. 38.34 0.27 98.71 9.00 Accuml. Values 1003.93 89.38 1486.20 5040.00 Num. Valid Values 24 24 24 24 Avg. Values 41.83 3.72 61.92 210.00 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.46 143.81 61.92 433.34 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3808 definition: xcompl = 1 - (RELH_avg/100) TdC = -1.2184 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 = 0.4876 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5124 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.6318 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 = 3.4322 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.4778 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.120 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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