Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 51.08 8.78 79.29 59.00 03Mar2018 9 a.m. 57.34 15.36 70.38 254.00 03Mar2018 10 a.m. 62.29 4.83 66.61 353.00 03Mar2018 11 a.m. 67.48 10.09 58.12 533.00 03Mar2018 12 p.m. 70.23 10.31 51.84 725.00 03Mar2018 1 p.m. 70.83 16.02 47.74 767.00 03Mar2018 2 p.m. 73.11 17.99 43.26 742.00 03Mar2018 3 p.m. 73.81 18.87 37.63 635.00 03Mar2018 4 p.m. 74.62 16.67 35.54 527.00 03Mar2018 5 p.m. 73.09 15.80 37.18 347.00 03Mar2018 6 p.m. 70.66 9.21 41.46 159.00 03Mar2018 7 p.m. 64.62 9.87 100.48 10.00 03Mar2018 8 p.m. 62.96 7.46 54.70 0.00 03Mar2018 9 p.m. 63.28 8.12 55.43 0.00 03Mar2018 10 p.m. 64.60 14.70 51.21 0.00 03Mar2018 11 p.m. 64.38 6.14 52.86 0.00 04Mar2018 12 a.m. 63.72 9.43 56.83 0.00 04Mar2018 1 a.m. 63.30 11.85 61.41 0.00 04Mar2018 2 a.m. 63.07 11.63 64.58 0.00 04Mar2018 3 a.m. 62.53 7.90 67.64 0.00 04Mar2018 4 a.m. 60.42 9.43 77.71 0.00 04Mar2018 5 a.m. 58.12 9.65 100.67 0.00 04Mar2018 6 a.m. 58.78 5.92 100.48 0.00 04Mar2018 7 a.m. 59.43 9.21 100.49 0.00 Accuml. Values 1553.77 265.24 1513.54 5111.00 Num. Valid Values 24 24 24 24 Avg. Values 64.74 11.05 63.06 212.96 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 18.19 426.77 63.06 439.44 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3694 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.1352 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 = 0.6651 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3349 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.7018 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 = 7.6387 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 9.9208 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.254 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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