Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 32.90 11.02 53.25 105.75 07Mar2018 9 a.m. 35.66 13.65 49.67 339.33 07Mar2018 10 a.m. 38.48 11.63 46.50 545.25 07Mar2018 11 a.m. 41.96 10.22 40.67 725.00 07Mar2018 12 p.m. 45.50 9.79 33.25 849.00 07Mar2018 1 p.m. 48.86 8.95 28.33 899.00 07Mar2018 2 p.m. 51.35 7.16 24.50 865.00 07Mar2018 3 p.m. 52.88 4.25 23.75 776.00 07Mar2018 4 p.m. 54.77 4.08 22.00 618.50 07Mar2018 5 p.m. 54.81 6.60 22.00 360.25 07Mar2018 6 p.m. 53.42 1.79 22.00 92.00 07Mar2018 7 p.m. 47.30 5.14 32.00 0.00 07Mar2018 8 p.m. 44.42 2.01 38.50 0.00 07Mar2018 9 p.m. 43.16 5.37 41.00 0.00 07Mar2018 10 p.m. 42.20 6.26 43.00 0.00 07Mar2018 11 p.m. 41.85 5.42 45.00 0.00 08Mar2018 12 a.m. 41.40 3.52 45.00 0.00 08Mar2018 1 a.m. 41.27 1.01 44.75 0.00 08Mar2018 2 a.m. 42.12 0.89 44.50 0.00 08Mar2018 3 a.m. 38.90 3.58 52.67 0.00 08Mar2018 4 a.m. 39.56 1.23 49.50 0.00 08Mar2018 5 a.m. 41.36 0.89 46.00 0.00 08Mar2018 6 a.m. 39.24 2.01 49.50 0.00 08Mar2018 7 a.m. 39.29 1.45 49.50 6.00 Accuml. Values 1052.66 127.92 946.84 6181.08 Num. Valid Values 24 24 24 24 Avg. Values 43.86 5.33 39.45 257.55 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.59 205.82 39.45 531.45 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6055 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.3540 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 = 0.5047 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4953 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.9849 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 = 5.9641 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.8950 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.195 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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