Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 29Dec2017 8 a.m. 28.80 4.18 59.59 1.00 29Dec2017 9 a.m. 30.00 4.76 58.61 25.00 29Dec2017 10 a.m. 32.41 4.12 56.90 77.00 29Dec2017 11 a.m. 36.37 4.17 50.62 137.00 29Dec2017 12 p.m. 41.99 4.79 43.35 201.00 29Dec2017 1 p.m. 44.94 6.97 41.09 283.00 29Dec2017 2 p.m. 44.19 8.59 43.96 199.00 29Dec2017 3 p.m. 43.20 6.71 51.23 115.00 29Dec2017 4 p.m. 43.09 5.50 53.00 88.00 29Dec2017 5 p.m. 42.96 6.50 55.43 59.00 29Dec2017 6 p.m. 42.75 4.26 59.22 3.00 29Dec2017 7 p.m. 25.93 2.73 70.63 0.00 29Dec2017 8 p.m. 43.07 5.28 64.16 0.00 29Dec2017 9 p.m. 42.75 1.38 64.96 0.00 29Dec2017 10 p.m. 43.07 2.38 66.54 0.00 29Dec2017 11 p.m. 42.64 4.12 68.44 0.00 30Dec2017 12 a.m. 42.08 0.86 68.19 0.00 30Dec2017 1 a.m. 41.99 1.46 68.87 0.00 30Dec2017 2 a.m. 41.54 0.64 73.88 0.00 30Dec2017 3 a.m. 41.65 0.63 71.55 0.00 30Dec2017 4 a.m. 40.87 0.17 76.25 0.00 30Dec2017 5 a.m. 40.87 0.86 73.44 0.00 30Dec2017 6 a.m. 40.33 2.53 69.47 0.00 30Dec2017 7 a.m. 39.99 2.85 70.76 0.00 Accuml. Values 957.49 86.44 1480.14 1188.00 Num. Valid Values 24 24 24 24 Avg. Values 39.90 3.60 61.67 49.50 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.39 139.08 61.67 102.14 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3833 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.2946 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 = 0.4712 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5288 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0730 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 = 3.2080 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.2965 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.046 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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