Detailed Weather Data for Project: SARD

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 34.86 15.20 65.74 118.90 07Mar2018 9 a.m. 35.19 16.40 65.14 353.30 07Mar2018 10 a.m. 36.45 14.70 62.29 560.70 07Mar2018 11 a.m. 38.17 10.90 58.14 639.70 07Mar2018 12 p.m. 40.39 12.90 53.07 815.10 07Mar2018 1 p.m. 42.57 9.10 46.65 883.30 07Mar2018 2 p.m. 45.61 11.60 41.52 830.10 07Mar2018 3 p.m. 47.61 13.70 39.47 711.70 07Mar2018 4 p.m. 49.14 11.60 37.35 540.20 07Mar2018 5 p.m. 50.16 12.40 36.22 322.90 07Mar2018 6 p.m. 50.50 12.10 37.77 94.50 07Mar2018 7 p.m. 57.04 6.50 30.55 0.00 07Mar2018 8 p.m. 45.91 1.30 44.49 0.00 07Mar2018 9 p.m. 40.03 3.30 57.04 0.00 07Mar2018 10 p.m. 36.18 3.80 68.70 0.00 07Mar2018 11 p.m. 34.54 3.80 73.28 0.00 08Mar2018 12 a.m. 32.22 4.60 77.49 0.00 08Mar2018 1 a.m. 31.37 3.20 81.19 0.00 08Mar2018 2 a.m. 30.36 3.20 86.20 0.00 08Mar2018 3 a.m. 29.43 3.70 89.55 0.00 08Mar2018 4 a.m. 29.08 3.40 88.02 0.00 08Mar2018 5 a.m. 27.81 4.70 91.33 0.00 08Mar2018 6 a.m. 28.02 4.50 90.55 0.00 08Mar2018 7 a.m. 27.95 2.20 92.93 6.30 Accuml. Values 920.57 188.80 1514.68 5876.70 Num. Valid Values 24 24 24 24 Avg. Values 38.36 7.87 63.11 244.86 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.53 303.78 63.11 505.28 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3689 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.7919 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 = 0.4580 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5420 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.3978 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 = 2.9070 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.3273 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.150 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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