Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 01Jan2018 8 a.m. 4.30 3.30 77.20 3.40 01Jan2018 9 a.m. 5.63 3.10 73.96 146.10 01Jan2018 10 a.m. 7.81 1.80 62.59 341.50 01Jan2018 11 a.m. 9.52 2.00 53.27 494.20 01Jan2018 12 p.m. 12.40 1.90 48.16 590.10 01Jan2018 1 p.m. 14.83 2.10 45.13 619.40 01Jan2018 2 p.m. 16.56 2.20 40.98 602.00 01Jan2018 3 p.m. 17.01 2.50 38.46 485.50 01Jan2018 4 p.m. 16.48 3.30 37.55 275.00 01Jan2018 5 p.m. 16.03 3.90 38.45 93.40 01Jan2018 6 p.m. 15.06 2.80 39.92 2.60 01Jan2018 7 p.m. 18.91 2.90 44.12 0.00 01Jan2018 8 p.m. 12.56 1.70 47.11 0.00 01Jan2018 9 p.m. 12.31 2.00 49.02 0.00 01Jan2018 10 p.m. 12.69 2.30 49.44 0.00 01Jan2018 11 p.m. 12.24 1.40 52.35 0.00 02Jan2018 12 a.m. 12.47 1.50 53.41 0.00 02Jan2018 1 a.m. 12.56 1.50 54.29 0.00 02Jan2018 2 a.m. 12.47 0.70 55.59 0.00 02Jan2018 3 a.m. 11.55 1.50 61.76 0.00 02Jan2018 4 a.m. 12.02 2.60 59.28 0.00 02Jan2018 5 a.m. 12.54 3.00 56.61 0.00 02Jan2018 6 a.m. 12.56 2.20 58.52 0.00 02Jan2018 7 a.m. 12.67 1.60 59.03 0.00 Accuml. Values 303.17 53.80 1256.20 3653.20 Num. Valid Values 24 24 24 24 Avg. Values 12.63 2.24 52.34 152.22 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -10.76 86.56 52.34 314.10 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4766 definition: xcompl = 1 - (RELH_avg/100) TdC = -18.6532 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 = 0.2468 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7532 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.5989 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 = 1.2979 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.8441 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.041 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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