Detailed Weather Data for Project: FOSS

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 25.16 6.21 52.75 100.00 07Mar2018 9 a.m. 32.00 6.15 42.00 258.50 07Mar2018 10 a.m. 39.96 8.56 34.50 514.00 07Mar2018 11 a.m. 43.88 7.75 27.33 672.67 07Mar2018 12 p.m. 48.20 6.15 20.75 794.50 07Mar2018 1 p.m. 50.66 4.92 18.33 828.67 07Mar2018 2 p.m. 53.55 4.03 16.75 826.00 07Mar2018 3 p.m. 55.76 3.91 15.25 741.50 07Mar2018 4 p.m. 57.83 6.65 14.25 595.75 07Mar2018 5 p.m. 57.69 6.38 14.00 337.50 07Mar2018 6 p.m. 54.14 6.93 19.00 110.00 07Mar2018 7 p.m. 44.78 6.26 49.00 0.00 07Mar2018 8 p.m. 43.61 5.59 32.00 0.00 07Mar2018 9 p.m. 41.36 4.32 34.33 0.00 07Mar2018 10 p.m. 38.90 4.03 36.33 0.00 07Mar2018 11 p.m. 36.27 0.89 42.00 0.00 08Mar2018 12 a.m. 34.43 1.06 45.25 0.00 08Mar2018 1 a.m. 31.87 3.69 53.75 0.00 08Mar2018 2 a.m. 29.03 3.19 63.00 0.00 08Mar2018 3 a.m. 28.28 1.34 61.00 0.00 08Mar2018 4 a.m. 24.58 1.79 70.00 0.00 08Mar2018 5 a.m. 24.62 0.67 73.00 0.00 08Mar2018 6 a.m. 22.73 0.56 78.25 0.00 08Mar2018 7 a.m. 22.37 1.57 79.50 3.00 Accuml. Values 941.66 102.60 992.32 5782.09 Num. Valid Values 24 24 24 24 Avg. Values 39.24 4.28 41.35 240.92 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.02 165.08 41.35 497.14 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5865 definition: xcompl = 1 - (RELH_avg/100) TdC = -8.0528 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 = 0.4655 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5345 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.3313 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 = 4.8358 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.5972 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.155 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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