Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 33.17 7.38 64.50 132.50 07Mar2018 9 a.m. 36.44 11.41 58.67 334.33 07Mar2018 10 a.m. 39.29 15.43 53.75 566.00 07Mar2018 11 a.m. 41.60 12.30 50.67 586.33 07Mar2018 12 p.m. 43.34 10.07 47.25 762.75 07Mar2018 1 p.m. 45.86 9.54 41.67 830.33 07Mar2018 2 p.m. 49.28 11.02 37.50 798.50 07Mar2018 3 p.m. 51.39 10.40 34.00 701.50 07Mar2018 4 p.m. 53.19 8.61 32.00 547.50 07Mar2018 5 p.m. 53.96 7.83 29.50 351.75 07Mar2018 6 p.m. 50.00 6.04 41.00 23.00 07Mar2018 7 p.m. 43.70 0.89 51.00 0.00 07Mar2018 8 p.m. 41.36 0.78 62.50 0.00 07Mar2018 9 p.m. 37.64 0.82 77.33 0.00 07Mar2018 10 p.m. 35.54 0.82 86.33 0.00 07Mar2018 11 p.m. 33.75 0.00 88.75 0.00 08Mar2018 12 a.m. 32.36 0.73 92.25 0.00 08Mar2018 1 a.m. 30.70 0.06 94.00 0.00 08Mar2018 2 a.m. 30.34 0.34 95.75 0.00 08Mar2018 3 a.m. 29.78 0.30 94.67 0.00 08Mar2018 4 a.m. 29.03 1.29 95.50 0.00 08Mar2018 5 a.m. 28.94 2.01 95.50 0.00 08Mar2018 6 a.m. 27.86 1.34 94.75 0.00 08Mar2018 7 a.m. 27.68 0.67 94.50 8.50 Accuml. Values 926.20 120.08 1613.34 5642.99 Num. Valid Values 24 23 24 24 Avg. Values 38.59 5.22 67.22 235.12 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.66 201.61 67.22 485.18 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3278 definition: xcompl = 1 - (RELH_avg/100) TdC = -1.8113 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 = 0.4600 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5400 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.1537 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 = 2.6027 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.3313 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.125 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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