Detailed Weather Data for Project: KEMP

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 34.07 2.81 39.99 18.00 07Mar2018 9 a.m. 41.11 5.43 27.11 230.00 07Mar2018 10 a.m. 43.75 3.37 27.72 458.00 07Mar2018 11 a.m. 45.72 4.47 24.91 659.00 07Mar2018 12 p.m. 48.69 6.91 21.37 813.00 07Mar2018 1 p.m. 51.76 4.94 22.16 906.00 07Mar2018 2 p.m. 54.41 6.48 18.56 934.00 07Mar2018 3 p.m. 58.91 5.62 13.62 798.00 07Mar2018 4 p.m. 58.80 1.66 14.04 627.00 07Mar2018 5 p.m. 59.02 4.14 18.44 532.00 07Mar2018 6 p.m. 57.04 7.54 22.90 217.00 07Mar2018 7 p.m. 66.16 16.98 22.16 66.00 07Mar2018 8 p.m. 50.34 8.89 33.83 0.00 07Mar2018 9 p.m. 49.23 8.52 34.62 0.00 07Mar2018 10 p.m. 48.15 9.02 36.70 0.00 07Mar2018 11 p.m. 46.60 8.09 43.90 0.00 08Mar2018 12 a.m. 46.83 7.35 39.99 0.00 08Mar2018 1 a.m. 46.17 5.78 39.81 0.00 08Mar2018 2 a.m. 46.38 4.02 45.98 0.00 08Mar2018 3 a.m. 44.64 4.88 52.64 0.00 08Mar2018 4 a.m. 45.52 1.69 46.17 0.00 08Mar2018 5 a.m. 45.95 4.81 43.72 0.00 08Mar2018 6 a.m. 37.26 0.38 55.93 0.00 08Mar2018 7 a.m. 39.45 3.42 50.37 0.00 Accuml. Values 1165.94 137.20 796.64 6258.00 Num. Valid Values 24 24 24 24 Avg. Values 48.58 5.72 33.19 260.75 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.21 220.75 33.19 538.06 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6681 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.2989 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 = 0.5437 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4563 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.3049 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 = 7.8568 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.5043 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.230 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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