MET Version 6.1

What's New?

• Major Enhancements: generalized point observations, unit conversion, data censoring, economic cost/loss value, gradients, fourier decomposition, relative position, and binned climatologies
• Please see slides describing recent changes: METv6.1_updates.pdf

Enhancements to Existing Tools:

• Distribute the latest set of bugfixes, details not listed here.
• Update "-version" command line option to include patch level info.
• Grid library code
  • Add support for Gaussian grids.
  • Add support for Polar Stereographic CF-Compliant NetCDF files.
  • Re-orient NetCDF lat/lon grid.
  • Support northern and southern hemisphere Lambert Conformal grids.
• Regridding
  • Add "shape" config option to the "regrid" and "interp" dictionaries to define a "square" (legacy) or "circle" area.
  • Automatically regrid masking regions to verification domain on the fly using nearest-neighbor interpolation.
• Config file options
  • Add "GRIB2_stat_type" config file filtering option.
  • Fix "GRIB_lvl_typ" config file filtering option for GRIB2 data.
  • Add "convert(x)" config file option to define unit conversion functions.
    • For example, convert(x) = C_to_F(x);
  • Add "censor_thresh" and "censor_val" config file options to apply a filtering thresholds and replacement values.
    • For example, censor_thresh = [ <0 ]; censor_val = [ 0 ];
• MODE
  • Remove "zero_border_size" config file option.
  • Remove "raw_thresh" config file option which is replaced by censoring.
  • Remove "AREA_FILTER" column from MODE output _obj.txt files.
  • Remove "FILTER" line from MODE output _cts.txt files.
  • Add output columns for "N_VALID", "GRID_RES", and "OBTYPE".
  • Speed up convex hull detection algorithm.
• PB2NC
  • Add support for reading BUFR files directly, rather than just PREPBUFR.
  • Replace "obs_grib_code" config file option with "obs_bufr_var".
  • Add "obs_bufr_map", "obs_prepbufr_map", "message_type_map", and "time_summary" config file options.
  • Add "-index" command line option to list all available observations.
• ASCII2NC
  • Enable input column 7 to contain an integer GRIB code (legacy) or string variable name.
• Point-Stat and Ensemble-Stat
  • Generalize the specification of point observations using the variable name rather than mapping to a GRIB code.
• Plot-Point-Obs
  • Add "-obs_var" command line option.
• Grid-Stat and Point-Stat
  • Add Root-Mean Squared Forecast (RMSFA) and Observation (RMSOA) Anomalies to the CNT line type.
  • Add new Economic Cost-Loss Value (ECLV) STAT line type derived from CTC or PCT lines.
  • Add "eclv_points" config file option.
  • Add initial support for binned climatologies by adding "climo_stdev" and "climo_cdf_bins" config file options.
  • When computing BSS, use the "climo_mean" and "climo_stdev" fields to derive the climatological probability values to be verified.
• Grid-Stat
  • Add new Gradient (GRAD) STAT line type for statistics derived from gradients, including the S1 score.
  • Add option to compute 1-dimensional Fourier Decompositions when generating CNT, SL1L2, SAL1L2, VL1L2, and VAL1L2 output lines.
  • Add "fourier" config file dictionary to specify wave numbers.
  • Append fourier wave number information to the "INTERP_MTHD" column.
  • Enhance "nc_pairs_flag" config file option to write derived "fourier" and "gradient" fields.
• Ensemble-Stat
  • Add "skip_const" config file option to exclude points where all ensemble members and the observation value are identical.
  • Add "obs_thresh" config file option to only include points where the observation value meets the filtering threshold.
  • Add "BSS_SMPL" statistic to the PSTD line type.
  • Add new Relative Position (RELP) STAT line type.
• Stat-Analysis
  • Enhance "-column_thresh" job command option to compute column difference with or without absolute values.
  • Add "RANGE" and "IQR" (Interquartile Range) columns for the summary job.
  • Allow for NA values when filtering data.
    • For example, -column_thresh CLIMO != NA
  • Add support for specifying derived columns, "INIT_HOUR" and "VALID_HOUR".
    • For example, -by INIT_HOUR
  • Add support for aggregating new ECLV, GRAD, and RELP line types.
  • Add support for reading CTC or PCT and deriving ECLV.
  • Add support for reading ORANK and deriving RELP.