Detailed Weather Data for Project: PINE

Date Time TAIR WSPD RELH SRAD 01Jan2018 8 a.m. 14.38 11.50 68.17 2.00 01Jan2018 9 a.m. 14.52 11.30 68.21 124.80 01Jan2018 10 a.m. 15.91 10.80 61.32 310.30 01Jan2018 11 a.m. 18.01 9.30 52.89 461.90 01Jan2018 12 p.m. 20.23 8.60 47.15 564.90 01Jan2018 1 p.m. 21.87 8.70 43.93 605.90 01Jan2018 2 p.m. 23.76 8.80 40.38 580.20 01Jan2018 3 p.m. 25.34 7.80 38.18 493.90 01Jan2018 4 p.m. 26.47 7.10 35.83 349.30 01Jan2018 5 p.m. 26.74 8.90 37.99 159.70 01Jan2018 6 p.m. 26.20 8.60 41.87 6.60 01Jan2018 7 p.m. 26.02 7.60 38.68 0.00 01Jan2018 8 p.m. 22.26 9.30 52.07 0.00 01Jan2018 9 p.m. 20.86 10.00 52.97 0.00 01Jan2018 10 p.m. 19.63 6.60 53.66 0.00 01Jan2018 11 p.m. 18.64 3.60 56.85 0.00 02Jan2018 12 a.m. 17.78 2.80 59.82 0.00 02Jan2018 1 a.m. 16.02 1.30 73.05 0.00 02Jan2018 2 a.m. 16.79 3.20 64.12 0.00 02Jan2018 3 a.m. 16.45 3.20 59.26 0.00 02Jan2018 4 a.m. 15.80 2.60 58.09 0.00 02Jan2018 5 a.m. 15.33 3.00 59.61 0.00 02Jan2018 6 a.m. 15.48 3.60 55.45 0.00 02Jan2018 7 a.m. 14.74 2.90 64.76 0.00 Accuml. Values 469.24 161.10 1284.31 3659.50 Num. Valid Values 24 24 24 24 Avg. Values 19.55 6.71 53.51 152.48 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -6.92 259.21 53.51 314.64 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4649 definition: xcompl = 1 - (RELH_avg/100) TdC = -14.7938 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 = 0.2998 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7002 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.7132 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 = 1.7108 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.8795 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.072 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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