Detailed Weather Data for Project: OOLO

Date Time TAIR WSPD RELH SRAD 31Dec2017 8 a.m. 13.82 10.00 57.30 0.00 31Dec2017 9 a.m. 13.50 11.30 56.76 30.90 31Dec2017 10 a.m. 14.07 10.50 54.30 247.40 31Dec2017 11 a.m. 14.72 9.70 51.19 385.90 31Dec2017 12 p.m. 16.00 8.50 47.45 423.50 31Dec2017 1 p.m. 17.60 6.90 44.86 89.80 31Dec2017 2 p.m. 18.66 8.70 40.48 89.30 31Dec2017 3 p.m. 18.36 10.30 35.10 206.00 31Dec2017 4 p.m. 18.73 9.50 38.20 255.20 31Dec2017 5 p.m. 18.16 10.30 43.42 82.10 31Dec2017 6 p.m. 16.45 9.60 45.68 0.00 31Dec2017 7 p.m. 15.57 8.00 47.05 0.00 31Dec2017 8 p.m. 14.67 9.50 48.35 0.00 31Dec2017 9 p.m. 13.71 10.50 49.68 0.00 31Dec2017 10 p.m. 12.42 11.00 51.73 0.00 31Dec2017 11 p.m. 11.26 10.90 54.04 0.00 01Jan2018 12 a.m. 10.06 10.90 56.54 0.00 01Jan2018 1 a.m. 8.76 11.10 59.55 0.00 01Jan2018 2 a.m. 7.68 10.80 61.52 0.00 01Jan2018 3 a.m. 6.53 11.00 64.33 0.00 01Jan2018 4 a.m. 5.49 10.80 66.12 0.00 01Jan2018 5 a.m. 4.48 10.80 67.59 0.00 01Jan2018 6 a.m. 3.76 9.40 68.76 0.00 01Jan2018 7 a.m. 3.00 8.80 68.64 0.00 Accuml. Values 297.44 238.80 1278.64 1810.10 Num. Valid Values 24 24 24 24 Avg. Values 12.39 9.95 53.28 75.42 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -10.89 384.23 53.28 155.63 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4672 definition: xcompl = 1 - (RELH_avg/100) TdC = -18.5632 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 = 0.2450 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7550 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.1981 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 = 1.2585 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.8783 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.058 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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