------------------------------------------------------------------- NEXRAD Precipitation Bias Calculated from the Multi Precipitation Estimator for RADARS in the SERFC Area for 2013-05-18 19:00:00 GMT. ------------------------------------------------------------------- Radar ID Bias Based on #Pairs /Gage Sum /Radar Sum Z=(a)R^(b) ZR type ----- ---- -------- --------------------------- ---------- ------- AKQ 0.96 0003 hrs 13 / 2.80 / 2.93 200 1.6 Marshall-Palmer AMX 0.93 0168 hrs 43 / 3.80 / 4.08 300 1.4 Convective BMX 0.91 0002 hrs 15 / 1.70 / 1.87 300 1.4 Convective BYX 0.87 0168 hrs 24 / 2.50 / 2.85 300 1.4 Convective CAE 1.00 ***** Manually Edited Bias ***** CLX 1.00 ***** Manually Edited Bias ***** DGX 0.94 0168 hrs 222 / 3.14 / 3.34 300 1.4 Convective EOX 1.00 ***** Manually Edited Bias ***** EVX 1.26 0168 hrs 108 / 2.54 / 2.02 300 1.4 Convective FCX 1.26 Current 18 / 2.09 / 1.66 300 1.4 Convective FFC 1.00 ***** Manually Edited Bias ***** GSP 1.28 Current 31 / 0.64 / 0.50 300 1.4 Convective GWX 1.04 0168 hrs 130 / 3.03 / 2.91 300 1.4 Convective HTX 1.15 0002 hrs 13 / 1.35 / 1.17 300 1.4 Convective JAX 1.09 0168 hrs 270 / 2.36 / 2.16 300 1.4 Convective JGX 1.00 ***** Manually Edited Bias ***** LTX 1.16 0168 hrs 53 / 2.53 / 2.17 300 1.4 Convective MHX 1.00 ***** Manually Edited Bias ***** MLB 1.31 0168 hrs 90 / 3.75 / 2.87 300 1.4 Convective MOB 0.74 0168 hrs 187 / 3.60 / 4.89 300 1.4 Convective MRX 1.45 0002 hrs 18 / 0.97 / 0.67 300 1.4 Convective MXX 1.00 ***** Manually Edited Bias ***** NQA 1.57 0010 hrs 11 / 3.00 / 1.90 300 1.4 Convective OHX 1.61 0005 hrs 27 / 1.75 / 1.09 300 1.4 Convective RAX 0.90 0002 hrs 21 / 2.44 / 2.73 300 1.4 Convective TBW 1.12 0168 hrs 72 / 3.08 / 2.75 300 1.4 Convective TLH 1.00 ***** Manually Edited Bias ***** VAX 1.00 ***** Manually Edited Bias ***** * The bias values are calculated from the MPE (Multi Precipitation Estimator) which uses 'pairs' of RADAR and rain gage data. MPE requires at least 10 gage/radar pairs in order to calculate a bias. The 'Based on' column shows how far in the past MPE went back to get the required number of pairs. Current refers to the current hour. * The final three columns show the number of pairs used to calculate the bias, and the sum of the gage and radar accumulations respectively. Bias above 1.00 indicates RADAR is under estimating precipitation. Bias below 1.00 indicates RADAR is over estimating precipitation. A bias of over 1.50 or under 0.50 may be reason for investigation. * Manual overides to computed biases are flagged in the report. * Missing DPAs (Digital Precipitation Arrays) from the RADARS are flagged in the report.