Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 38.25 4.20 97.17 17.80 02Dec2017 9 a.m. 38.35 5.60 95.93 156.50 02Dec2017 10 a.m. 41.85 2.20 88.08 304.60 02Dec2017 11 a.m. 48.43 1.60 73.18 412.40 02Dec2017 12 p.m. 53.38 1.70 61.42 473.90 02Dec2017 1 p.m. 55.31 3.30 62.76 477.10 02Dec2017 2 p.m. 57.94 3.80 59.39 420.20 02Dec2017 3 p.m. 61.59 2.50 51.80 314.60 02Dec2017 4 p.m. 63.10 2.60 48.38 177.30 02Dec2017 5 p.m. 61.05 3.10 52.25 32.80 02Dec2017 6 p.m. 57.70 0.80 59.55 0.00 02Dec2017 7 p.m. 63.57 11.10 72.84 0.00 02Dec2017 8 p.m. 49.32 1.30 86.40 0.00 02Dec2017 9 p.m. 48.27 1.40 88.62 0.00 02Dec2017 10 p.m. 46.27 1.60 87.99 0.00 02Dec2017 11 p.m. 42.75 1.80 91.61 0.00 03Dec2017 12 a.m. 44.31 5.10 94.73 0.00 03Dec2017 1 a.m. 43.74 5.40 94.95 0.00 03Dec2017 2 a.m. 43.95 3.30 93.29 0.00 03Dec2017 3 a.m. 43.23 2.80 94.92 0.00 03Dec2017 4 a.m. 42.13 2.50 96.91 0.00 03Dec2017 5 a.m. 41.20 3.90 98.27 0.00 03Dec2017 6 a.m. 40.78 3.00 97.97 0.00 03Dec2017 7 a.m. 40.80 4.10 97.88 0.00 Accuml. Values 1167.29 78.70 1946.29 2787.20 Num. Valid Values 24 24 24 24 Avg. Values 48.64 3.28 81.10 116.13 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.24 126.63 81.10 239.64 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1890 definition: xcompl = 1 - (RELH_avg/100) TdC = 6.1791 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 = 0.5442 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4558 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.5172 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 = 2.2059 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.5793 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.061 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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