Detailed Weather Data for Project: KAWL

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 55.00 14.10 56.06 7.70 04Mar2018 9 a.m. 55.72 14.20 56.36 81.90 04Mar2018 10 a.m. 58.10 13.10 58.21 73.10 04Mar2018 11 a.m. 59.88 19.10 59.56 183.10 04Mar2018 12 p.m. 62.10 19.70 59.54 284.80 04Mar2018 1 p.m. 64.72 19.50 59.85 351.30 04Mar2018 2 p.m. 64.15 19.80 64.06 204.60 04Mar2018 3 p.m. 63.34 18.80 65.74 106.20 04Mar2018 4 p.m. 61.09 19.20 68.92 71.80 04Mar2018 5 p.m. 60.22 18.20 73.38 87.40 04Mar2018 6 p.m. 60.24 15.20 74.01 13.60 04Mar2018 7 p.m. 54.16 11.00 20.24 0.00 04Mar2018 8 p.m. 57.20 15.30 83.58 0.00 04Mar2018 9 p.m. 56.01 15.50 91.68 0.00 04Mar2018 10 p.m. 55.18 15.70 97.43 0.00 04Mar2018 11 p.m. 55.13 15.70 100.18 0.00 05Mar2018 12 a.m. 56.17 18.80 98.86 0.00 05Mar2018 1 a.m. 56.77 17.10 96.28 0.00 05Mar2018 2 a.m. 57.72 18.50 95.22 0.00 05Mar2018 3 a.m. 58.98 20.90 94.75 0.00 05Mar2018 4 a.m. 60.24 17.90 94.72 0.00 05Mar2018 5 a.m. 59.11 12.90 97.93 0.00 05Mar2018 6 a.m. 51.37 21.40 81.92 0.00 05Mar2018 7 a.m. 46.06 25.20 67.97 0.00 Accuml. Values 1388.68 416.80 1816.45 1465.50 Num. Valid Values 24 24 24 24 Avg. Values 57.86 17.37 75.69 61.06 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.37 670.63 75.69 126.00 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2431 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.1787 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 = 0.6162 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3838 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.3770 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 = 3.9446 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.9119 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.129 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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