Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 29.98 4.36 73.50 139.00 07Mar2018 9 a.m. 32.24 7.01 68.00 217.67 07Mar2018 10 a.m. 35.01 7.61 60.25 537.25 07Mar2018 11 a.m. 37.28 7.23 56.67 745.33 07Mar2018 12 p.m. 39.38 8.39 51.25 810.50 07Mar2018 1 p.m. 42.62 8.35 45.67 832.33 07Mar2018 2 p.m. 44.55 9.62 41.50 792.00 07Mar2018 3 p.m. 45.95 9.67 39.50 684.50 07Mar2018 4 p.m. 46.80 8.95 37.00 524.25 07Mar2018 5 p.m. 47.43 7.21 35.50 324.25 07Mar2018 6 p.m. 45.68 5.14 38.00 39.00 07Mar2018 7 p.m. 39.74 0.67 48.00 0.00 07Mar2018 8 p.m. 37.22 1.01 54.00 0.00 07Mar2018 9 p.m. 33.14 0.45 64.33 0.00 07Mar2018 10 p.m. 30.98 1.04 69.67 0.00 07Mar2018 11 p.m. 29.26 1.45 73.25 0.00 08Mar2018 12 a.m. 28.72 0.84 74.25 0.00 08Mar2018 1 a.m. 28.09 0.62 71.50 0.00 08Mar2018 2 a.m. 27.10 0.73 72.25 0.00 08Mar2018 3 a.m. 26.18 1.12 75.67 0.00 08Mar2018 4 a.m. 25.61 0.95 73.50 0.00 08Mar2018 5 a.m. 24.98 0.67 77.00 0.00 08Mar2018 6 a.m. 24.89 0.73 78.75 0.00 08Mar2018 7 a.m. 24.53 0.56 79.50 8.50 Accuml. Values 827.36 94.38 1458.51 5654.58 Num. Valid Values 24 24 24 24 Avg. Values 34.47 3.93 60.77 235.61 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 1.37 151.86 60.77 486.18 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3923 definition: xcompl = 1 - (RELH_avg/100) TdC = -5.3494 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 = 0.4247 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5753 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.0039 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 = 2.6577 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.0336 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.113 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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