Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 31.46 13.23 66.39 151.00 07Mar2018 9 a.m. 32.99 13.91 63.33 372.00 07Mar2018 10 a.m. 35.19 12.55 56.25 445.00 07Mar2018 11 a.m. 36.82 11.23 57.71 762.00 07Mar2018 12 p.m. 40.14 9.62 50.50 886.00 07Mar2018 1 p.m. 43.11 9.76 44.34 910.00 07Mar2018 2 p.m. 46.08 12.25 35.18 867.00 07Mar2018 3 p.m. 49.05 12.54 34.20 751.00 07Mar2018 4 p.m. 50.47 13.10 30.84 480.00 07Mar2018 5 p.m. 51.01 12.81 25.40 374.00 07Mar2018 6 p.m. 51.46 10.53 28.88 135.00 07Mar2018 7 p.m. 56.62 9.26 28.09 8.00 07Mar2018 8 p.m. 47.71 2.48 39.33 0.00 07Mar2018 9 p.m. 43.21 0.60 58.87 0.00 07Mar2018 10 p.m. 36.07 1.12 61.92 0.00 07Mar2018 11 p.m. 37.60 1.88 52.94 0.00 08Mar2018 12 a.m. 39.15 1.62 78.10 0.00 08Mar2018 1 a.m. 38.80 3.84 76.27 0.00 08Mar2018 2 a.m. 37.60 3.71 74.80 0.00 08Mar2018 3 a.m. 36.72 2.79 59.72 0.00 08Mar2018 4 a.m. 35.29 2.06 53.43 0.00 08Mar2018 5 a.m. 36.28 2.03 45.74 0.00 08Mar2018 6 a.m. 30.90 0.71 75.54 0.00 08Mar2018 7 a.m. 29.46 2.30 81.52 5.00 Accuml. Values 973.18 165.93 1279.29 6146.00 Num. Valid Values 24 24 24 24 Avg. Values 40.55 6.91 53.30 256.08 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.75 266.98 53.30 528.43 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4670 definition: xcompl = 1 - (RELH_avg/100) TdC = -3.9533 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 = 0.4767 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5233 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.7919 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 = 4.0287 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.0704 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.174 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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