Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 43.70 16.72 24.00 114.75 06Mar2018 9 a.m. 46.58 17.45 24.33 336.00 06Mar2018 10 a.m. 49.95 21.42 22.50 567.00 06Mar2018 11 a.m. 52.76 20.88 19.00 736.67 06Mar2018 12 p.m. 55.53 21.14 15.00 860.75 06Mar2018 1 p.m. 57.14 21.47 15.00 904.00 06Mar2018 2 p.m. 59.22 21.08 12.25 877.50 06Mar2018 3 p.m. 59.45 24.05 11.50 773.25 06Mar2018 4 p.m. 60.26 22.20 10.25 620.75 06Mar2018 5 p.m. 59.00 22.54 10.50 410.75 06Mar2018 6 p.m. 55.22 27.51 14.00 85.00 06Mar2018 7 p.m. 52.16 17.22 17.00 0.00 06Mar2018 8 p.m. 49.46 13.87 21.00 0.00 06Mar2018 9 p.m. 48.56 15.77 21.50 0.00 06Mar2018 10 p.m. 46.52 16.25 22.33 0.00 06Mar2018 11 p.m. 43.92 17.00 24.75 0.00 07Mar2018 12 a.m. 40.28 13.25 35.50 0.00 07Mar2018 1 a.m. 38.21 11.18 40.50 0.00 07Mar2018 2 a.m. 37.22 13.76 43.25 0.00 07Mar2018 3 a.m. 34.34 8.05 49.00 0.00 07Mar2018 4 a.m. 34.07 9.79 50.25 0.00 07Mar2018 5 a.m. 32.81 10.07 54.00 0.00 07Mar2018 6 a.m. 32.31 12.97 54.00 0.00 07Mar2018 7 a.m. 31.64 13.20 56.50 3.50 Accuml. Values 1120.31 408.84 667.91 6289.92 Num. Valid Values 24 24 24 24 Avg. Values 46.68 17.03 27.83 262.08 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.16 657.82 27.83 540.81 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.7217 definition: xcompl = 1 - (RELH_avg/100) TdC = -9.4769 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 = 0.5282 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4718 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.2480 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 = 7.8933 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 14.3387 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.375 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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