Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 01Jan2018 8 a.m. 3.43 7.35 72.99 10.00 01Jan2018 9 a.m. 4.42 6.27 71.52 174.00 01Jan2018 10 a.m. 7.50 5.43 63.65 364.00 01Jan2018 11 a.m. 11.23 3.62 52.28 509.00 01Jan2018 12 p.m. 12.88 4.34 47.28 597.00 01Jan2018 1 p.m. 13.21 4.65 42.88 615.00 01Jan2018 2 p.m. 14.32 3.11 41.66 42.00 01Jan2018 3 p.m. 16.84 2.78 37.75 59.00 01Jan2018 4 p.m. 17.28 4.71 37.14 224.00 01Jan2018 5 p.m. 16.07 5.75 38.30 85.00 01Jan2018 6 p.m. 14.76 5.29 41.05 5.00 01Jan2018 7 p.m. 23.67 6.87 47.34 0.00 01Jan2018 8 p.m. 13.55 4.49 45.57 0.00 01Jan2018 9 p.m. 13.10 6.21 45.87 0.00 01Jan2018 10 p.m. 12.78 4.18 50.33 0.00 01Jan2018 11 p.m. 12.33 3.85 52.52 0.00 02Jan2018 12 a.m. 12.00 1.32 54.42 0.00 02Jan2018 1 a.m. 13.21 2.65 56.50 0.00 02Jan2018 2 a.m. 13.21 1.88 58.09 0.00 02Jan2018 3 a.m. 13.21 2.06 57.60 0.00 02Jan2018 4 a.m. 13.10 1.59 56.93 0.00 02Jan2018 5 a.m. 13.55 1.57 57.11 0.00 02Jan2018 6 a.m. 13.42 3.01 58.58 0.00 02Jan2018 7 a.m. 13.32 3.29 60.53 0.00 Accuml. Values 312.38 96.27 1247.89 2684.00 Num. Valid Values 24 24 24 24 Avg. Values 13.02 4.01 52.00 111.83 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -10.55 154.90 52.00 230.77 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4800 definition: xcompl = 1 - (RELH_avg/100) TdC = -18.5345 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 = 0.2496 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7504 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.8468 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 = 1.3300 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.1171 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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