Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 35.82 0.26 73.62 58.00 07Mar2018 9 a.m. 37.36 0.77 68.44 173.00 07Mar2018 10 a.m. 38.14 0.47 57.14 301.00 07Mar2018 11 a.m. 41.41 0.38 53.60 609.00 07Mar2018 12 p.m. 44.29 0.26 47.19 813.00 07Mar2018 1 p.m. 46.15 0.51 45.17 843.00 07Mar2018 2 p.m. 48.34 0.40 42.18 805.00 07Mar2018 3 p.m. 50.88 0.41 37.30 702.00 07Mar2018 4 p.m. 52.63 0.63 36.44 556.00 07Mar2018 5 p.m. 52.75 0.05 38.95 355.00 07Mar2018 6 p.m. 52.20 0.89 38.77 145.00 07Mar2018 7 p.m. 56.59 2.57 26.92 7.00 07Mar2018 8 p.m. 44.49 0.71 61.35 0.00 07Mar2018 9 p.m. 41.63 1.00 65.80 0.00 07Mar2018 10 p.m. 39.67 1.33 74.18 1.00 07Mar2018 11 p.m. 37.58 2.19 71.97 0.00 08Mar2018 12 a.m. 36.93 1.10 73.57 0.00 08Mar2018 1 a.m. 37.02 0.24 76.55 0.00 08Mar2018 2 a.m. 37.26 0.06 80.16 0.00 08Mar2018 3 a.m. 36.25 0.09 82.77 0.00 08Mar2018 4 a.m. 34.95 0.09 87.24 0.00 08Mar2018 5 a.m. 34.83 0.12 79.48 0.00 08Mar2018 6 a.m. 32.41 0.06 74.72 0.00 08Mar2018 7 a.m. 33.40 0.68 73.93 2.00 Accuml. Values 1002.99 15.27 1467.44 5370.00 Num. Valid Values 24 24 24 24 Avg. Values 41.79 0.64 61.14 223.75 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.44 24.57 61.14 461.71 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3886 definition: xcompl = 1 - (RELH_avg/100) TdC = -1.4143 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 = 0.4873 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5127 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.9863 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 = 3.4990 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.4790 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.106 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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