Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 29Dec2017 8 a.m. 32.18 13.70 95.25 1.00 29Dec2017 9 a.m. 32.72 14.61 92.33 11.33 29Dec2017 10 a.m. 33.98 15.32 90.00 51.50 29Dec2017 11 a.m. 35.36 14.91 88.33 90.00 29Dec2017 12 p.m. 36.36 17.50 89.00 95.75 29Dec2017 1 p.m. 37.22 20.24 89.00 97.00 29Dec2017 2 p.m. 38.16 14.32 87.50 81.75 29Dec2017 3 p.m. 39.65 14.88 84.75 123.75 29Dec2017 4 p.m. 41.22 11.13 81.25 103.75 29Dec2017 5 p.m. 41.45 10.96 81.25 59.75 29Dec2017 6 p.m. 38.30 4.92 91.00 0.00 29Dec2017 7 p.m. 37.94 5.37 93.00 0.00 29Dec2017 8 p.m. 36.95 3.36 94.50 0.00 29Dec2017 9 p.m. 37.40 4.25 96.67 0.00 29Dec2017 10 p.m. 38.72 3.28 96.00 0.00 29Dec2017 11 p.m. 39.74 3.36 93.00 0.00 30Dec2017 12 a.m. 39.92 4.31 92.50 0.00 30Dec2017 1 a.m. 39.47 4.75 92.50 0.00 30Dec2017 2 a.m. 38.90 9.17 93.33 0.00 30Dec2017 3 a.m. 37.88 6.93 94.00 0.00 30Dec2017 4 a.m. 31.24 18.17 94.25 0.00 30Dec2017 5 a.m. 28.58 20.58 90.50 0.00 30Dec2017 6 a.m. 26.74 19.57 88.00 0.00 30Dec2017 7 a.m. 24.71 20.69 88.00 0.00 Accuml. Values 864.79 276.28 2175.91 715.58 Num. Valid Values 24 24 24 24 Avg. Values 36.03 11.51 90.66 29.82 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 2.24 444.53 90.66 61.53 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0934 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.8452 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 = 0.4381 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5619 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4780 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 = 0.6872 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.2286 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.019 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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