Detailed Weather Data for Project: PINE

Date Time TAIR WSPD RELH SRAD 29Dec2017 8 a.m. 32.70 4.00 57.48 0.00 29Dec2017 9 a.m. 33.03 5.30 56.94 14.40 29Dec2017 10 a.m. 33.76 6.10 55.98 65.20 29Dec2017 11 a.m. 34.95 7.40 54.67 133.00 29Dec2017 12 p.m. 36.73 7.40 53.20 185.70 29Dec2017 1 p.m. 39.11 10.50 52.50 226.50 29Dec2017 2 p.m. 40.41 6.90 53.32 130.20 29Dec2017 3 p.m. 42.13 8.50 53.21 96.40 29Dec2017 4 p.m. 42.94 7.20 53.44 61.70 29Dec2017 5 p.m. 43.38 4.00 56.45 5.30 29Dec2017 6 p.m. 43.14 7.10 63.13 0.00 29Dec2017 7 p.m. 36.03 10.60 83.44 0.00 29Dec2017 8 p.m. 42.93 5.00 68.80 0.00 29Dec2017 9 p.m. 43.12 4.50 72.77 0.00 29Dec2017 10 p.m. 42.67 3.70 79.89 0.00 29Dec2017 11 p.m. 41.41 4.20 92.69 0.00 30Dec2017 12 a.m. 40.82 1.30 98.22 0.00 30Dec2017 1 a.m. 40.77 2.70 98.85 0.00 30Dec2017 2 a.m. 40.48 1.90 99.41 0.00 30Dec2017 3 a.m. 40.44 1.70 98.48 0.00 30Dec2017 4 a.m. 40.51 1.70 96.02 0.00 30Dec2017 5 a.m. 40.55 1.50 94.01 0.00 30Dec2017 6 a.m. 40.64 3.90 92.69 0.00 30Dec2017 7 a.m. 40.86 7.20 89.94 0.00 Accuml. Values 953.53 124.30 1775.53 918.40 Num. Valid Values 24 24 24 24 Avg. Values 39.73 5.18 73.98 38.27 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.29 200.00 73.98 78.96 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2602 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.0961 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 = 0.4698 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5302 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2962 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 = 2.1592 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.9687 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.036 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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