Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 42.62 12.07 55.06 90.00 06Mar2018 9 a.m. 46.15 12.51 45.72 308.00 06Mar2018 10 a.m. 50.43 18.43 40.78 499.00 06Mar2018 11 a.m. 53.06 12.94 33.33 681.00 06Mar2018 12 p.m. 54.50 13.16 34.68 791.00 06Mar2018 1 p.m. 56.16 22.60 28.39 836.00 06Mar2018 2 p.m. 57.04 19.31 27.84 813.00 06Mar2018 3 p.m. 58.01 21.72 22.83 726.00 06Mar2018 4 p.m. 58.57 28.96 22.10 580.00 06Mar2018 5 p.m. 57.79 20.40 26.43 386.00 06Mar2018 6 p.m. 57.92 23.70 29.73 181.00 06Mar2018 7 p.m. 51.53 1.97 32.60 12.00 06Mar2018 8 p.m. 53.62 14.70 37.97 0.00 06Mar2018 9 p.m. 52.41 17.33 35.04 0.00 06Mar2018 10 p.m. 51.08 16.89 35.83 0.00 06Mar2018 11 p.m. 48.99 19.53 37.91 0.00 07Mar2018 12 a.m. 45.81 11.85 45.05 0.00 07Mar2018 1 a.m. 43.84 14.26 48.71 0.00 07Mar2018 2 a.m. 41.86 12.73 49.81 0.00 07Mar2018 3 a.m. 41.20 15.14 54.88 0.00 07Mar2018 4 a.m. 41.86 16.67 55.12 0.00 07Mar2018 5 a.m. 40.53 13.82 51.76 0.00 07Mar2018 6 a.m. 39.00 18.65 56.28 0.00 07Mar2018 7 a.m. 37.69 17.77 63.06 1.00 Accuml. Values 1181.68 397.11 970.91 5904.00 Num. Valid Values 24 24 24 24 Avg. Values 49.24 16.55 40.45 246.00 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.58 638.95 40.45 507.63 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5955 definition: xcompl = 1 - (RELH_avg/100) TdC = -3.3214 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 = 0.5491 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4509 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.9176 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 = 7.1747 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 12.8736 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.335 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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