Detailed Weather Data for Project: KEMP

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 39.79 5.03 28.88 16.00 06Mar2018 9 a.m. 46.71 5.77 24.42 228.00 06Mar2018 10 a.m. 52.75 6.41 16.91 450.00 06Mar2018 11 a.m. 55.85 13.29 14.41 666.00 06Mar2018 12 p.m. 59.47 15.87 10.32 821.00 06Mar2018 1 p.m. 61.21 10.85 9.34 911.00 06Mar2018 2 p.m. 62.98 7.86 8.24 932.00 06Mar2018 3 p.m. 62.76 8.39 7.20 883.00 06Mar2018 4 p.m. 64.18 7.66 7.33 741.00 06Mar2018 5 p.m. 64.18 10.54 7.02 568.00 06Mar2018 6 p.m. 61.34 12.61 7.45 301.00 06Mar2018 7 p.m. 53.64 10.97 27.11 37.00 06Mar2018 8 p.m. 52.75 8.77 11.17 0.00 06Mar2018 9 p.m. 50.77 6.35 12.88 0.00 06Mar2018 10 p.m. 47.26 7.00 16.67 0.00 06Mar2018 11 p.m. 45.50 11.64 20.15 0.00 07Mar2018 12 a.m. 44.29 7.28 23.63 0.00 07Mar2018 1 a.m. 43.30 6.07 24.91 0.00 07Mar2018 2 a.m. 40.33 6.90 28.03 0.00 07Mar2018 3 a.m. 35.06 7.73 37.31 0.00 07Mar2018 4 a.m. 34.52 4.68 37.07 0.00 07Mar2018 5 a.m. 33.31 5.30 37.55 0.00 07Mar2018 6 a.m. 31.66 4.62 39.81 0.00 07Mar2018 7 a.m. 30.88 4.92 40.85 0.00 Accuml. Values 1174.53 196.51 498.66 6554.00 Num. Valid Values 24 24 24 24 Avg. Values 48.94 8.19 20.78 273.08 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.41 316.18 20.78 563.51 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.7922 definition: xcompl = 1 - (RELH_avg/100) TdC = -12.0180 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 = 0.5466 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4534 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.6793 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 = 9.4060 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 9.6097 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.294 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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