Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 36.48 15.14 63.79 96.00 07Mar2018 9 a.m. 37.24 14.92 60.92 309.00 07Mar2018 10 a.m. 38.89 10.53 58.42 508.00 07Mar2018 11 a.m. 41.32 8.34 52.44 640.00 07Mar2018 12 p.m. 44.38 8.78 47.92 778.00 07Mar2018 1 p.m. 47.57 5.49 44.02 802.00 07Mar2018 2 p.m. 49.89 7.46 37.79 736.00 07Mar2018 3 p.m. 52.65 2.63 32.11 698.00 07Mar2018 4 p.m. 54.95 2.41 27.96 553.00 07Mar2018 5 p.m. 55.29 2.85 27.90 328.00 07Mar2018 6 p.m. 54.95 0.88 28.03 182.00 07Mar2018 7 p.m. 59.56 10.97 35.96 10.00 07Mar2018 8 p.m. 48.34 3.73 37.24 0.00 07Mar2018 9 p.m. 47.25 3.95 40.72 0.00 07Mar2018 10 p.m. 46.47 3.51 40.65 0.00 07Mar2018 11 p.m. 45.48 4.83 42.85 0.00 08Mar2018 12 a.m. 42.40 5.05 51.46 0.00 08Mar2018 1 a.m. 42.08 4.17 58.66 0.00 08Mar2018 2 a.m. 41.09 5.70 57.50 0.00 08Mar2018 3 a.m. 39.88 3.51 66.35 0.00 08Mar2018 4 a.m. 40.10 3.29 66.23 0.00 08Mar2018 5 a.m. 39.33 1.54 59.88 0.00 08Mar2018 6 a.m. 38.57 5.05 64.22 0.00 08Mar2018 7 a.m. 39.00 3.73 65.25 2.00 Accuml. Values 1083.18 138.46 1168.27 5642.00 Num. Valid Values 24 24 24 24 Avg. Values 45.13 5.77 48.68 235.08 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.30 222.78 48.68 485.10 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5132 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.8442 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 = 0.5153 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4847 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.4278 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 = 5.2872 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.6156 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.178 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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