Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 35.87 21.03 23.50 8.00 05Dec2017 9 a.m. 35.78 17.45 22.67 33.67 05Dec2017 10 a.m. 36.14 10.29 27.25 60.50 05Dec2017 11 a.m. 36.80 10.07 28.67 122.33 05Dec2017 12 p.m. 38.25 10.40 27.50 251.00 05Dec2017 1 p.m. 40.04 10.96 26.00 294.00 05Dec2017 2 p.m. 41.72 10.23 24.50 287.50 05Dec2017 3 p.m. 42.44 7.49 24.50 217.75 05Dec2017 4 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 5 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 6 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 7 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 8 p.m. 38.48 2.46 39.00 0.00 05Dec2017 9 p.m. 37.22 4.92 41.00 0.00 05Dec2017 10 p.m. 36.50 4.36 43.50 0.00 05Dec2017 11 p.m. 37.40 4.87 42.50 0.00 06Dec2017 12 a.m. 37.08 4.14 46.75 0.00 06Dec2017 1 a.m. 38.61 5.76 39.25 0.00 06Dec2017 2 a.m. 40.05 7.33 35.50 0.00 06Dec2017 3 a.m. 39.26 4.85 38.33 0.00 06Dec2017 4 a.m. 37.26 2.91 43.75 0.00 06Dec2017 5 a.m. 37.58 7.16 44.50 0.00 06Dec2017 6 a.m. 40.28 7.10 38.50 0.00 06Dec2017 7 a.m. 39.29 8.50 41.00 0.00 Accuml. Values 766.05 162.28 698.17 1274.75 Num. Valid Values 20 20 20 20 Avg. Values 38.30 8.11 34.91 63.74 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.50 313.33 34.91 131.52 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6509 definition: xcompl = 1 - (RELH_avg/100) TdC = -10.7064 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 = 0.4576 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5424 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.1976 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 = 5.1757 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.6456 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.124 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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