Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 46.98 21.92 49.50 104.00 05Mar2018 9 a.m. 49.22 19.98 45.00 322.00 05Mar2018 10 a.m. 51.08 27.29 37.25 544.75 05Mar2018 11 a.m. 54.20 23.64 29.00 640.67 05Mar2018 12 p.m. 58.01 21.36 19.00 865.75 05Mar2018 1 p.m. 59.48 18.86 16.00 907.00 05Mar2018 2 p.m. 60.57 16.16 12.50 852.75 05Mar2018 3 p.m. 60.84 16.78 12.25 635.50 05Mar2018 4 p.m. 61.88 15.27 10.00 621.00 05Mar2018 5 p.m. 61.34 13.31 10.00 433.25 05Mar2018 6 p.m. 58.10 11.18 10.00 101.00 05Mar2018 7 p.m. 51.80 7.16 13.00 0.00 05Mar2018 8 p.m. 48.92 4.70 17.00 0.00 05Mar2018 9 p.m. 45.77 3.91 24.50 0.00 05Mar2018 10 p.m. 45.44 5.00 23.33 0.00 05Mar2018 11 p.m. 48.11 4.08 17.00 0.00 06Mar2018 12 a.m. 48.42 3.19 16.50 0.00 06Mar2018 1 a.m. 46.62 2.80 18.75 0.00 06Mar2018 2 a.m. 44.01 2.74 23.50 0.00 06Mar2018 3 a.m. 43.34 8.28 25.50 0.00 06Mar2018 4 a.m. 42.80 13.92 26.75 0.00 06Mar2018 5 a.m. 42.80 13.98 26.00 0.00 06Mar2018 6 a.m. 43.83 15.88 23.75 0.00 06Mar2018 7 a.m. 43.07 15.77 25.00 3.00 Accuml. Values 1216.63 307.16 531.08 6030.67 Num. Valid Values 24 24 24 24 Avg. Values 50.69 12.80 22.13 251.28 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 10.38 494.22 22.13 518.52 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.7787 definition: xcompl = 1 - (RELH_avg/100) TdC = -10.4242 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 = 0.5608 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4392 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.1387 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 = 9.8702 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 13.8976 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.354 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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