Detailed Weather Data for Project: DENI

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 44.06 15.70 44.38 20.00 05Dec2017 9 a.m. 44.06 16.57 40.54 115.00 05Dec2017 10 a.m. 45.27 17.58 47.74 143.00 05Dec2017 11 a.m. 44.40 14.55 34.31 131.00 05Dec2017 12 p.m. 43.95 11.72 34.67 122.00 05Dec2017 1 p.m. 44.71 14.72 31.74 234.00 05Dec2017 2 p.m. 45.27 12.49 28.14 219.00 05Dec2017 3 p.m. 45.61 11.91 33.88 272.00 05Dec2017 4 p.m. 45.59 7.83 25.94 191.00 05Dec2017 5 p.m. 45.82 5.60 28.21 39.00 05Dec2017 6 p.m. 45.61 3.19 29.49 0.00 05Dec2017 7 p.m. 52.30 6.47 29.67 0.00 05Dec2017 8 p.m. 44.38 4.24 30.64 0.00 05Dec2017 9 p.m. 43.74 4.05 32.05 0.00 05Dec2017 10 p.m. 44.40 4.34 34.86 0.00 05Dec2017 11 p.m. 43.52 4.12 32.23 0.00 06Dec2017 12 a.m. 43.41 5.89 35.54 0.00 06Dec2017 1 a.m. 44.62 3.10 37.42 0.00 06Dec2017 2 a.m. 46.71 4.37 41.70 0.00 06Dec2017 3 a.m. 45.93 3.75 32.84 0.00 06Dec2017 4 a.m. 46.04 8.92 43.89 0.00 06Dec2017 5 a.m. 45.81 7.43 33.88 0.00 06Dec2017 6 a.m. 43.84 2.46 57.20 0.00 06Dec2017 7 a.m. 46.92 2.93 36.69 0.00 Accuml. Values 1085.97 193.93 857.65 1486.00 Num. Valid Values 24 24 24 24 Avg. Values 45.25 8.08 35.74 61.92 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.36 312.03 35.74 127.77 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6426 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.9724 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 = 0.5163 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4837 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.2363 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 = 6.6725 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.0397 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.139 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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