Detailed Weather Data for Project: PINE

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 40.96 8.20 89.53 0.00 30Dec2017 9 a.m. 41.31 2.90 87.34 11.80 30Dec2017 10 a.m. 42.69 4.30 80.22 59.70 30Dec2017 11 a.m. 44.20 8.00 70.11 121.50 30Dec2017 12 p.m. 44.31 8.80 71.18 94.90 30Dec2017 1 p.m. 43.72 10.60 73.52 76.70 30Dec2017 2 p.m. 40.96 16.70 77.94 94.00 30Dec2017 3 p.m. 39.70 14.60 78.99 99.00 30Dec2017 4 p.m. 39.15 12.60 78.16 55.60 30Dec2017 5 p.m. 38.43 10.90 79.89 13.00 30Dec2017 6 p.m. 37.18 11.10 81.25 0.00 30Dec2017 7 p.m. 26.56 14.00 49.85 0.00 30Dec2017 8 p.m. 35.17 9.80 84.72 0.00 30Dec2017 9 p.m. 34.95 6.90 83.90 0.00 30Dec2017 10 p.m. 34.68 5.90 83.93 0.00 30Dec2017 11 p.m. 34.16 5.30 86.42 0.00 31Dec2017 12 a.m. 33.49 5.60 91.21 0.00 31Dec2017 1 a.m. 32.92 7.90 96.10 0.00 31Dec2017 2 a.m. 32.81 9.00 99.29 0.00 31Dec2017 3 a.m. 33.31 10.10 100.01 0.00 31Dec2017 4 a.m. 34.18 6.80 98.94 0.00 31Dec2017 5 a.m. 34.00 11.40 98.03 0.00 31Dec2017 6 a.m. 32.92 11.40 91.37 0.00 31Dec2017 7 a.m. 32.29 10.10 90.80 0.00 Accuml. Values 884.06 222.90 2022.70 626.20 Num. Valid Values 24 24 24 24 Avg. Values 36.84 9.29 84.28 26.09 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 2.69 358.65 84.28 53.84 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1572 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.2890 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 = 0.4450 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5550 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.5440 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 = 1.1774 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.6857 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.027 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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