Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 34.29 0.71 63.55 106.00 07Mar2018 9 a.m. 36.37 1.63 56.11 324.00 07Mar2018 10 a.m. 36.81 1.07 53.30 508.00 07Mar2018 11 a.m. 39.45 1.62 53.05 613.00 07Mar2018 12 p.m. 40.44 1.24 50.55 720.00 07Mar2018 1 p.m. 43.74 1.89 43.65 845.00 07Mar2018 2 p.m. 45.59 6.89 39.68 816.00 07Mar2018 3 p.m. 47.14 2.83 41.03 727.00 07Mar2018 4 p.m. 49.68 4.07 35.59 579.00 07Mar2018 5 p.m. 51.10 1.39 31.01 390.00 07Mar2018 6 p.m. 50.88 0.77 30.28 173.00 07Mar2018 7 p.m. 53.73 3.03 36.08 6.00 07Mar2018 8 p.m. 46.80 1.18 51.15 0.00 07Mar2018 9 p.m. 43.95 1.17 60.81 0.00 07Mar2018 10 p.m. 43.41 0.55 55.49 0.00 07Mar2018 11 p.m. 41.76 0.66 71.18 0.00 08Mar2018 12 a.m. 41.65 0.35 66.54 0.00 08Mar2018 1 a.m. 41.76 0.89 57.33 0.00 08Mar2018 2 a.m. 40.87 1.00 72.41 0.00 08Mar2018 3 a.m. 41.09 0.63 64.29 0.00 08Mar2018 4 a.m. 39.99 1.45 60.86 0.00 08Mar2018 5 a.m. 39.34 1.14 53.42 0.00 08Mar2018 6 a.m. 37.80 0.80 67.64 0.00 08Mar2018 7 a.m. 35.60 0.64 70.63 3.00 Accuml. Values 1023.22 37.60 1285.63 5810.00 Num. Valid Values 24 24 24 24 Avg. Values 42.63 1.57 53.57 242.08 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.91 60.50 53.57 499.54 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4643 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.8041 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 = 0.4944 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5056 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.5076 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 = 4.3383 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.1661 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.131 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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