Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 29Dec2017 8 a.m. 36.03 6.36 100.54 1.00 29Dec2017 9 a.m. 36.36 7.68 100.54 10.00 29Dec2017 10 a.m. 37.35 5.49 100.54 42.00 29Dec2017 11 a.m. 38.89 9.00 100.42 96.00 29Dec2017 12 p.m. 40.66 12.29 89.00 151.00 29Dec2017 1 p.m. 42.19 19.09 84.91 94.00 29Dec2017 2 p.m. 42.62 8.56 85.52 91.00 29Dec2017 3 p.m. 43.61 10.53 83.81 71.00 29Dec2017 4 p.m. 45.16 10.09 81.19 62.00 29Dec2017 5 p.m. 45.37 12.07 81.61 38.00 29Dec2017 6 p.m. 45.16 7.02 83.81 5.00 29Dec2017 7 p.m. 44.49 4.39 86.01 0.00 29Dec2017 8 p.m. 44.49 5.70 87.84 0.00 29Dec2017 9 p.m. 44.49 7.46 87.47 0.00 29Dec2017 10 p.m. 44.17 9.65 88.21 0.00 29Dec2017 11 p.m. 44.17 9.00 90.59 0.00 30Dec2017 12 a.m. 44.17 8.56 91.81 0.00 30Dec2017 1 a.m. 43.29 10.53 94.55 0.00 30Dec2017 2 a.m. 42.85 9.00 96.51 0.00 30Dec2017 3 a.m. 43.18 7.24 96.20 0.00 30Dec2017 4 a.m. 43.07 8.34 94.01 0.00 30Dec2017 5 a.m. 43.07 16.46 91.08 0.00 30Dec2017 6 a.m. -901.00 -901.00 -901.00 -901.00 30Dec2017 7 a.m. -901.00 -901.00 -901.00 -901.00 Accuml. Values 934.83 204.51 1996.17 661.00 Num. Valid Values 22 22 22 22 Avg. Values 42.49 9.30 90.73 30.05 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.83 358.97 90.73 62.00 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0927 definition: xcompl = 1 - (RELH_avg/100) TdC = 4.4064 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 = 0.4932 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5068 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4415 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 = 0.8749 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.2989 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.017 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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