Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 18.36 3.70 93.48 0.00 30Dec2017 9 a.m. 17.17 4.10 94.89 2.30 30Dec2017 10 a.m. 16.79 3.20 93.53 35.10 30Dec2017 11 a.m. 16.63 3.40 87.56 80.10 30Dec2017 12 p.m. 16.48 3.30 81.28 131.20 30Dec2017 1 p.m. 16.70 2.90 77.72 159.30 30Dec2017 2 p.m. 16.99 3.30 74.53 170.60 30Dec2017 3 p.m. 17.55 3.00 70.87 132.90 30Dec2017 4 p.m. 17.62 2.40 66.97 60.30 30Dec2017 5 p.m. 17.87 1.60 65.18 17.30 30Dec2017 6 p.m. 17.83 2.30 63.13 0.00 30Dec2017 7 p.m. 16.39 3.70 47.21 0.00 30Dec2017 8 p.m. 17.51 4.20 66.68 0.00 30Dec2017 9 p.m. 17.67 2.10 68.36 0.00 30Dec2017 10 p.m. 18.07 0.90 70.83 0.00 30Dec2017 11 p.m. 18.30 1.70 73.69 0.00 31Dec2017 12 a.m. 19.17 3.10 78.28 0.00 31Dec2017 1 a.m. 19.17 4.90 87.57 0.00 31Dec2017 2 a.m. 19.06 5.80 95.19 0.00 31Dec2017 3 a.m. 17.44 4.00 81.82 0.00 31Dec2017 4 a.m. 15.98 5.80 75.48 0.00 31Dec2017 5 a.m. 15.24 5.90 68.74 0.00 31Dec2017 6 a.m. 14.52 5.80 68.78 0.00 31Dec2017 7 a.m. 13.91 6.00 68.76 0.00 Accuml. Values 412.41 87.10 1820.53 789.10 Num. Valid Values 24 24 24 24 Avg. Values 17.18 3.63 75.86 32.88 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -8.23 140.14 75.86 67.85 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2414 definition: xcompl = 1 - (RELH_avg/100) TdC = -11.7228 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 = 0.2812 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7188 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4957 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 = 0.7996 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.6788 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.014 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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