Detailed Weather Data for Project: KAWL

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 33.98 10.70 42.15 0.00 05Dec2017 9 a.m. 34.21 10.90 43.72 25.30 05Dec2017 10 a.m. 34.90 11.40 39.97 192.60 05Dec2017 11 a.m. 36.50 11.30 36.82 298.80 05Dec2017 12 p.m. 37.76 11.20 33.37 312.40 05Dec2017 1 p.m. 39.78 7.80 29.73 528.20 05Dec2017 2 p.m. 42.39 8.20 27.78 429.20 05Dec2017 3 p.m. 44.58 6.40 25.28 330.30 05Dec2017 4 p.m. 46.29 6.20 25.51 236.50 05Dec2017 5 p.m. 45.66 7.00 29.08 59.60 05Dec2017 6 p.m. 41.16 4.80 35.21 0.00 05Dec2017 7 p.m. 44.06 6.50 44.22 0.00 05Dec2017 8 p.m. 36.07 5.30 45.97 0.00 05Dec2017 9 p.m. 34.50 6.60 49.85 0.00 05Dec2017 10 p.m. 33.48 5.50 52.28 0.00 05Dec2017 11 p.m. 33.42 5.10 52.05 0.00 06Dec2017 12 a.m. 32.92 5.00 54.29 0.00 06Dec2017 1 a.m. 31.68 5.30 58.89 0.00 06Dec2017 2 a.m. 31.15 3.70 59.73 0.00 06Dec2017 3 a.m. 29.16 3.70 65.53 0.00 06Dec2017 4 a.m. 26.85 4.20 77.93 0.00 06Dec2017 5 a.m. 29.37 3.30 70.03 0.00 06Dec2017 6 a.m. 31.37 2.80 57.75 0.00 06Dec2017 7 a.m. 32.02 4.30 56.70 0.00 Accuml. Values 863.26 157.20 1113.84 2412.90 Num. Valid Values 24 24 24 24 Avg. Values 35.97 6.55 46.41 100.54 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 2.20 252.93 46.41 207.46 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5359 definition: xcompl = 1 - (RELH_avg/100) TdC = -8.1792 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 = 0.4376 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5624 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.9241 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 = 3.8823 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.8056 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.100 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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