Detailed Weather Data for Project: MARI

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 47.70 18.91 67.83 124.00 03Mar2018 9 a.m. 52.32 22.09 59.78 332.00 03Mar2018 10 a.m. 57.81 23.66 53.30 521.00 03Mar2018 11 a.m. 62.31 22.55 49.27 670.00 03Mar2018 12 p.m. 66.04 22.28 43.96 762.00 03Mar2018 1 p.m. 69.46 22.12 42.25 790.00 03Mar2018 2 p.m. 70.45 22.05 44.44 750.00 03Mar2018 3 p.m. 70.65 24.06 44.74 646.00 03Mar2018 4 p.m. 70.88 22.52 43.96 489.00 03Mar2018 5 p.m. 68.77 25.80 47.74 294.00 03Mar2018 6 p.m. 66.36 22.58 51.64 86.00 03Mar2018 7 p.m. 58.03 19.32 73.44 0.00 03Mar2018 8 p.m. 59.67 15.22 57.20 0.00 03Mar2018 9 p.m. 55.36 14.60 64.09 0.00 03Mar2018 10 p.m. 54.73 16.04 63.37 0.00 03Mar2018 11 p.m. 53.62 13.88 64.40 0.00 04Mar2018 12 a.m. 52.63 13.26 65.44 0.00 04Mar2018 1 a.m. 52.09 15.39 66.91 0.00 04Mar2018 2 a.m. 50.77 13.65 70.09 0.00 04Mar2018 3 a.m. 49.44 13.53 71.79 0.00 04Mar2018 4 a.m. 48.90 12.23 72.04 0.00 04Mar2018 5 a.m. 49.14 11.70 70.83 0.00 04Mar2018 6 a.m. 49.12 14.05 69.54 0.00 04Mar2018 7 a.m. 49.89 14.41 66.85 1.00 Accuml. Values 1386.14 435.90 1424.90 5465.00 Num. Valid Values 24 24 24 24 Avg. Values 57.76 18.16 59.37 227.71 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.31 701.36 59.37 469.88 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4063 definition: xcompl = 1 - (RELH_avg/100) TdC = 6.5554 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 = 0.6154 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3846 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.8013 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 = 6.5965 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 12.9081 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.312 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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