Detailed Weather Data for Project: TRUS

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 52.65 12.65 35.17 15.00 05Mar2018 9 a.m. 54.41 16.50 31.87 207.00 05Mar2018 10 a.m. 56.93 17.67 25.95 448.00 05Mar2018 11 a.m. 57.70 13.84 21.00 638.00 05Mar2018 12 p.m. 63.10 14.18 14.78 804.00 05Mar2018 1 p.m. 63.43 13.98 12.46 846.00 05Mar2018 2 p.m. 65.73 9.91 8.85 644.00 05Mar2018 3 p.m. 64.40 9.46 7.39 892.00 05Mar2018 4 p.m. 66.49 9.04 5.80 420.00 05Mar2018 5 p.m. 64.40 7.95 6.04 598.00 05Mar2018 6 p.m. 63.64 5.70 6.47 252.00 05Mar2018 7 p.m. 56.05 11.38 9.95 38.00 05Mar2018 8 p.m. 55.62 3.78 10.01 0.00 05Mar2018 9 p.m. 53.31 2.97 11.23 0.00 05Mar2018 10 p.m. 51.33 4.08 12.76 0.00 05Mar2018 11 p.m. 48.79 0.98 54.16 0.00 06Mar2018 12 a.m. 45.50 0.47 58.62 0.00 06Mar2018 1 a.m. 45.28 7.05 48.36 0.00 06Mar2018 2 a.m. 45.07 6.25 37.00 0.00 06Mar2018 3 a.m. 38.70 4.34 34.50 0.00 06Mar2018 4 a.m. 37.60 5.28 28.03 0.00 06Mar2018 5 a.m. 33.96 5.34 35.29 0.00 06Mar2018 6 a.m. 39.58 6.15 24.55 0.00 06Mar2018 7 a.m. 34.95 5.41 32.67 0.00 Accuml. Values 1258.63 194.36 572.91 5802.00 Num. Valid Values 24 24 24 24 Avg. Values 52.44 8.10 23.87 241.75 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 11.36 312.73 23.87 498.86 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.7613 definition: xcompl = 1 - (RELH_avg/100) TdC = -8.6564 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 = 0.5747 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4253 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.9510 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 = 10.2959 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.3272 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.285 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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