------------------------------------------------------------------- NEXRAD Precipitation Bias Calculated from the Multi Precipitation Estimator for RADARS in the SERFC Area for 2013-05-20 00:00:00 GMT. ------------------------------------------------------------------- Radar ID Bias Based on #Pairs /Gage Sum /Radar Sum Z=(a)R^(b) ZR type ----- ---- -------- --------------------------- ---------- ------- AKQ 0.84 0005 hrs 13 / 2.25 / 2.67 200 1.6 Marshall-Palmer AMX 0.94 0168 hrs 38 / 3.73 / 3.96 300 1.4 Convective BMX 1.04 0001 hrs 19 / 4.47 / 4.31 300 1.4 Convective BYX 0.87 0168 hrs 22 / 2.48 / 2.86 300 1.4 Convective CAE 1.00 0002 hrs 14 / 2.67 / 2.66 300 1.4 Convective CLX 0.89 0001 hrs 17 / 6.64 / 7.45 300 1.4 Convective DGX 0.94 0168 hrs 187 / 3.14 / 3.34 300 1.4 Convective EOX 0.55 0003 hrs 11 / 3.20 / 5.81 300 1.4 Convective EVX 1.24 0168 hrs 94 / 2.50 / 2.02 300 1.4 Convective FCX 0.88 Current 42 / 2.70 / 3.05 300 1.4 Convective FFC 1.25 ***** Manually Edited Bias ***** GSP 0.61 Current 44 / 0.62 / 1.01 300 1.4 Convective GWX 1.04 0168 hrs 109 / 3.03 / 2.91 300 1.4 Convective HTX 0.60 Current 59 / 0.76 / 1.26 300 1.4 Convective JAX 1.10 ***** Manually Edited Bias ***** JGX 0.59 Current 42 / 1.57 / 2.68 300 1.4 Convective LTX 1.28 0002 hrs 11 / 2.11 / 1.65 300 1.4 Convective MHX 0.67 0010 hrs 11 / 1.61 / 2.39 300 1.4 Convective MLB 1.21 0168 hrs 90 / 3.93 / 3.26 300 1.4 Convective MOB 0.74 0168 hrs 157 / 3.60 / 4.89 300 1.4 Convective MRX 0.64 0001 hrs 11 / 1.40 / 2.20 300 1.4 Convective MXX 1.41 0002 hrs 12 / 6.08 / 4.32 300 1.4 Convective NQA 1.57 0168 hrs 168 / 2.78 / 1.77 300 1.4 Convective OHX 0.53 0001 hrs 17 / 1.56 / 2.94 300 1.4 Convective RAX 0.98 Current 15 / 3.40 / 3.47 300 1.4 Convective TBW 1.06 0168 hrs 71 / 3.15 / 2.96 300 1.4 Convective TLH 1.10 ***** Manually Edited Bias ***** VAX 1.10 ***** 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.