Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 42.12 11.76 42.99 160.00 06Mar2018 9 a.m. 47.39 16.04 35.97 401.00 06Mar2018 10 a.m. 49.03 21.12 32.55 613.00 06Mar2018 11 a.m. 50.68 24.09 26.50 773.00 06Mar2018 12 p.m. 53.10 28.20 25.34 869.00 06Mar2018 1 p.m. 54.30 30.44 21.74 889.00 06Mar2018 2 p.m. 54.41 29.87 24.43 802.00 06Mar2018 3 p.m. 54.30 32.99 19.85 641.00 06Mar2018 4 p.m. 53.55 32.28 20.21 417.00 06Mar2018 5 p.m. 52.21 33.56 26.69 277.00 06Mar2018 6 p.m. 49.59 31.27 29.80 103.00 06Mar2018 7 p.m. 48.81 8.59 38.78 7.00 06Mar2018 8 p.m. 42.66 23.66 45.49 0.00 06Mar2018 9 p.m. 41.34 21.06 44.15 0.00 06Mar2018 10 p.m. 39.58 15.73 45.68 0.00 06Mar2018 11 p.m. 37.71 14.04 46.90 0.00 07Mar2018 12 a.m. 37.38 14.77 50.68 0.00 07Mar2018 1 a.m. 36.72 14.35 55.14 0.00 07Mar2018 2 a.m. 34.63 15.69 57.10 0.00 07Mar2018 3 a.m. 33.87 14.91 61.74 0.00 07Mar2018 4 a.m. 33.10 11.30 66.69 0.00 07Mar2018 5 a.m. 31.55 9.20 66.26 0.00 07Mar2018 6 a.m. 32.11 9.46 69.74 0.00 07Mar2018 7 a.m. 31.68 13.57 70.97 3.00 Accuml. Values 1041.80 477.95 1025.39 5955.00 Num. Valid Values 24 24 24 24 Avg. Values 43.41 19.91 42.72 248.13 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.34 769.02 42.72 512.01 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5728 definition: xcompl = 1 - (RELH_avg/100) TdC = -5.5112 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 = 0.5009 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4991 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.7055 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 = 5.5417 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 11.9585 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.328 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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