Detailed Weather Data for Project: KAWL

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 27.45 10.50 76.40 101.60 07Mar2018 9 a.m. 30.81 13.60 69.55 331.90 07Mar2018 10 a.m. 33.60 14.10 64.62 494.30 07Mar2018 11 a.m. 36.10 12.80 58.76 680.30 07Mar2018 12 p.m. 39.76 13.10 49.84 788.10 07Mar2018 1 p.m. 43.34 14.90 37.29 823.20 07Mar2018 2 p.m. 45.84 16.10 30.06 793.10 07Mar2018 3 p.m. 47.73 14.30 26.86 691.80 07Mar2018 4 p.m. 49.19 14.20 25.97 540.90 07Mar2018 5 p.m. 50.16 12.40 26.16 346.40 07Mar2018 6 p.m. 50.76 12.90 25.91 139.70 07Mar2018 7 p.m. 57.11 9.00 28.33 1.50 07Mar2018 8 p.m. 46.65 1.90 34.06 0.00 07Mar2018 9 p.m. 43.30 1.70 42.01 0.00 07Mar2018 10 p.m. 38.86 1.70 60.79 0.00 07Mar2018 11 p.m. 37.31 3.70 71.54 0.00 08Mar2018 12 a.m. 36.18 1.90 60.59 0.00 08Mar2018 1 a.m. 37.08 6.10 75.86 0.00 08Mar2018 2 a.m. 38.10 6.90 79.30 0.00 08Mar2018 3 a.m. 37.56 10.60 80.53 0.00 08Mar2018 4 a.m. 36.25 12.30 58.07 0.00 08Mar2018 5 a.m. 34.93 9.00 54.49 0.00 08Mar2018 6 a.m. 33.76 9.10 56.67 0.00 08Mar2018 7 a.m. 32.40 10.10 57.99 0.30 Accuml. Values 964.24 232.90 1251.65 5733.10 Num. Valid Values 24 24 24 24 Avg. Values 40.18 9.70 52.15 238.88 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.54 374.74 52.15 492.93 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4785 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.4455 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 = 0.4736 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5264 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.3171 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 = 4.0721 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.1841 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.188 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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