Detailed Weather Data for Project: KEMP

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 43.54 2.38 44.39 0.00 06Dec2017 9 a.m. 43.09 3.51 46.46 17.00 06Dec2017 10 a.m. 45.18 3.95 36.63 61.00 06Dec2017 11 a.m. 47.16 4.63 32.30 68.00 06Dec2017 12 p.m. 50.13 6.26 29.37 117.00 06Dec2017 1 p.m. 50.45 6.45 27.90 142.00 06Dec2017 2 p.m. 50.90 7.13 27.36 257.00 06Dec2017 3 p.m. 53.31 7.63 23.81 256.00 06Dec2017 4 p.m. 52.75 4.04 22.96 180.00 06Dec2017 5 p.m. 52.11 4.59 23.94 60.00 06Dec2017 6 p.m. 51.55 4.32 24.36 8.00 06Dec2017 7 p.m. 33.19 4.35 35.35 0.00 06Dec2017 8 p.m. 46.62 3.05 32.43 0.00 06Dec2017 9 p.m. 41.88 3.63 37.79 0.00 06Dec2017 10 p.m. 40.12 5.29 37.37 0.00 06Dec2017 11 p.m. 40.68 6.95 34.74 0.00 07Dec2017 12 a.m. 39.69 4.91 34.81 0.00 07Dec2017 1 a.m. 39.15 5.38 34.93 0.00 07Dec2017 2 a.m. 35.83 3.79 42.44 0.00 07Dec2017 3 a.m. 35.08 5.14 43.30 0.00 07Dec2017 4 a.m. 36.39 9.21 41.22 0.00 07Dec2017 5 a.m. 34.97 16.78 49.34 0.00 07Dec2017 6 a.m. 33.19 15.80 56.97 0.00 07Dec2017 7 a.m. 32.43 15.14 62.52 0.00 Accuml. Values 1029.36 154.31 882.69 1166.00 Num. Valid Values 24 24 24 24 Avg. Values 42.89 6.43 36.78 48.58 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.05 248.28 36.78 100.25 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6322 definition: xcompl = 1 - (RELH_avg/100) TdC = -7.7642 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 = 0.4965 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5035 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0660 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 = 6.0021 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.5185 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.108 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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