Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 57.69 0.00 98.03 1.00 04Nov2017 9 a.m. 76.80 0.00 108.47 35.00 04Nov2017 10 a.m. 75.60 0.00 103.77 242.00 04Nov2017 11 a.m. 97.03 0.00 92.67 433.00 04Nov2017 12 p.m. 83.86 0.00 63.50 585.00 04Nov2017 1 p.m. 102.56 0.00 66.19 526.00 04Nov2017 2 p.m. 96.40 0.00 54.59 650.00 04Nov2017 3 p.m. 99.07 0.00 53.50 509.00 04Nov2017 4 p.m. 100.36 0.00 49.34 307.00 04Nov2017 5 p.m. 101.57 0.00 51.72 260.00 04Nov2017 6 p.m. 108.72 0.00 57.89 123.00 04Nov2017 7 p.m. 105.51 0.00 64.78 11.00 04Nov2017 8 p.m. 68.23 0.00 76.37 0.00 04Nov2017 9 p.m. 100.56 0.00 77.30 0.00 04Nov2017 10 p.m. 100.63 0.00 79.98 0.00 04Nov2017 11 p.m. 92.97 0.00 78.51 0.00 05Nov2017 12 a.m. 98.02 0.00 85.47 0.00 05Nov2017 1 a.m. 96.93 0.00 88.69 0.00 05Nov2017 2 a.m. 96.15 0.00 86.13 0.00 05Nov2017 3 a.m. 95.14 0.00 86.75 0.00 05Nov2017 4 a.m. 93.74 0.00 91.62 0.00 05Nov2017 5 a.m. 92.75 0.00 94.51 0.00 05Nov2017 6 a.m. 92.17 0.00 98.11 0.00 05Nov2017 7 a.m. 91.76 0.00 101.94 1.00 Accuml. Values 2224.24 0.00 1909.83 3683.00 Num. Valid Values 24 0 24 24 Avg. Values 92.68 79.58 153.46 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 33.71 0.00 79.58 316.66 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2042 definition: xcompl = 1 - (RELH_avg/100) TdC = 29.7782 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 = 0.8161 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.1839 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.1150 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 = 10.4580 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.3141 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.156 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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