Detailed Weather Data for Project: PINE

Date Time TAIR WSPD RELH SRAD 31Dec2017 8 a.m. 32.11 11.10 88.79 0.00 31Dec2017 9 a.m. 30.63 14.70 89.52 0.00 31Dec2017 10 a.m. 28.15 16.80 91.12 5.50 31Dec2017 11 a.m. 28.11 16.40 87.54 53.50 31Dec2017 12 p.m. 27.45 16.10 83.09 73.70 31Dec2017 1 p.m. 25.81 15.20 79.89 114.60 31Dec2017 2 p.m. 25.88 15.10 74.54 151.20 31Dec2017 3 p.m. 25.81 17.80 73.20 118.20 31Dec2017 4 p.m. 26.49 17.00 68.17 106.30 31Dec2017 5 p.m. 27.82 14.50 58.84 102.10 31Dec2017 6 p.m. 27.41 17.20 53.08 2.10 31Dec2017 7 p.m. 24.67 9.30 47.42 0.00 31Dec2017 8 p.m. 25.29 17.50 44.55 0.00 31Dec2017 9 p.m. 24.31 13.40 42.46 0.00 31Dec2017 10 p.m. 23.22 14.90 42.11 0.00 31Dec2017 11 p.m. 22.28 17.70 45.39 0.00 01Jan2018 12 a.m. 21.24 16.90 46.79 0.00 01Jan2018 1 a.m. 20.12 16.40 49.06 0.00 01Jan2018 2 a.m. 18.90 15.80 52.82 0.00 01Jan2018 3 a.m. 17.91 15.00 57.57 0.00 01Jan2018 4 a.m. 17.08 13.50 60.43 0.00 01Jan2018 5 a.m. 16.41 14.40 62.50 0.00 01Jan2018 6 a.m. 15.69 14.10 64.90 0.00 01Jan2018 7 a.m. 14.99 12.00 67.50 0.00 Accuml. Values 567.77 362.80 1531.28 727.20 Num. Valid Values 24 24 24 24 Avg. Values 23.66 15.12 63.80 30.30 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -4.64 583.75 63.80 62.52 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3620 definition: xcompl = 1 - (RELH_avg/100) TdC = -10.4229 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 = 0.3332 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6668 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.5187 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 = 1.5771 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.1549 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.076 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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