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MET release notes

When applicable, release notes are followed by the GitHub issue number which describes the bugfix, enhancement, or new feature: MET GitHub issues.

MET Version |version| release notes (|release_date|)

  • Bugfixes:

    • Fix Stat-Analysis aggregation of the neighborhood statistics line types (#2271)
    • Fix support for int64 NetCDF variable types (#2123)
    • Fix regression test differences in pb2nc and ioda2nc output (#2102)

MET Version 10.0.1 release notes (2021-12-01)

  • Bugfixes:

    • Fix MTD to compute the CDIST_TRAVELLED value correctly (#1976)
    • Fix MADIS2NC to handle the 2016 changes to its format (#1936).
    • Fix TC-Stat event equalization logic to include any model name requested using -amodel (#1932).
    • Fix Ensemble-Stat failure when verifying against gridded ECMWF GRIB1 files (#1879).
    • Fix python embedding when using a named grid with MET_PYTHON_EXE set (#1798).
    • Fix the plot_tcmpr.R script to support specifying a directory with -lookin (#1872).
    • Fix the plot_tcmpr.R script to plot extra-tropical cyclone tracks not verified against BEST tracks (#1801).
    • Fix the Plot-Point-Obs documentation to remove the duplicate configuration section (#1789).

MET Version 10.0.0 release notes (2021-05-10)

  • Repository and build:

    • Migrate GitHub respository from the NCAR to DTCenter organization (#1462).
    • Switch to consistent vX.Y.Z version numbering, from v10.0 to v10.0.0 (#1590).
    • Switch from tagging releases as met-X.Y.Z to vX.Y.Z instead (#1541).
    • Add a GitHub pull request template (#1516).
    • Resolve warnings from autoconf (#1498).
    • Restructure nightly builds (#1510).
    • Update the MET unit test logic by unsetting environment variables after each test to provide a clean environment for the next (#1624).
    • Run the nightly build as the shared met_test user (#1116).
    • Correct the time offset for tests in unit_plot_data_plane.xml (#1677).
    • Enhance the sample plotting R-script to read output from different versions of MET (#1653).
    • Update the default configuration options to compile the development code with the debug (-g) option and the production code without it (#1788).
    • Update MET to compile using GCC version 10 (#1552).
    • Update MET to compile using PGI version 20 (#1317).

  • Documentation:

    • Migrate the MET documentation to Read the Docs (#1649).
    • Enhance and update documentation (#1459 and #1460, and #1731).
    • Enhance the python embedding documentation (#1468).
    • Document the supported grid definition templates (#1469).
    • Update comments at the top of each MET config file directing users to the MET User's Guide (#1598).
    • Migrate content from README and README_TC in data/config to the MET User's Guide (#1474).
    • Add version selector to the Sphinx documentation page (#1461).
    • Make bolding consistent across the documentation (#1458).
    • Implement hanging indents for references (#1457).
    • Correct typos and spelling errors (#1456).
    • Update the Grid-Diag documentation to clarify the -data command line option (#1611).
    • Documentation updates to correct typos and apply consistent formatting (#1455).
    • Correct the definition of H_RATE and PODY in MET User's Guide Appendix C (#1631).

  • Library code:

    • Bugfixes:

      • Apply the GRIB ensemble filtering option (GRIB_ens) whenever specified by the user (#1604).
      • Fix the set_attr_accum option to set the accumulation time instead of the lead time (#1646).
      • Fix ASCII file list parsing logic (#1484 and #1508).
      • Fix parsing error for floating point percentile thresholds, like ">SFP33.3" (#1716).

    • Python embedding enhancements:

      • Note that the netCDF4 Python package is now required in place of the pickle package!
      • Replace the pickle format for temporary python files with NetCDF for gridded data (#1319, #1697).
      • Replace the pickle format for temporary python files with ASCII for point observations in ascii2nc and matched pair data in Stat-Analysis (#1319, #1700).
      • Complete support for Python XArray embedding (#1534).
      • Treat gridded fields of entirely missing data as missing files and fix python embedding to call common data processing code (#1494).
      • Clarify error messages for Xarray python embedding (#1472).
      • Add support for Gaussian grids with python embedding (#1477).
      • Correct error messages from python embedding (#1473).
      • Enhance to support the "grid" being defined as a named grid or specification string (#1471).
      • Enhance to parse python longlong variables as integers to make the python embedding scripts less particular (#1747).
      • Fix the read_ascii_mpr.py python embedding script to pass all 37 columns of MPR data to Stat-Analysis (#1620).
      • Fix the read_tmp_dataplane.py python embedding script to handle the fill value correctly (#1753).

    • Miscellaneous:

      • Enhance support for rotated latlon grids and update related documentation (#1574).
      • Parse the -v and -log options prior to application-specific command line options (#1527).
      • Update GRIB1/2 table entries for the MXUPHL, MAXREF, MAXUVV, and MAXDVV variables (#1658).
      • Update the Air Force GRIB tables to reflect current AF usage (#1519).
      • Enhance the DataLine::get_item() error message to include the file name, line number, and column (#1429).
      • Add support for climatological probabilities for complex CDP thresholds, like >=CDP33&&<=CDP67 (#1705).
      • Update the NCL-derived color tables (#1568).

    • NetCDF library:

      • Enhance to support additional NetCDF data types (#1492 and #1493).
      • Add support for the NetCDF-CF conventions time bounds option (#1657).
      • Extend CF-compliant NetCDF file support when defining the time dimension as a time string (#1755).
      • Error out when reading CF-compliant NetCDF data with incomplete grid definition (#1454).
      • Reformat and simplify the magic_str() printed for NetCDF data files (#1655).
      • Parse the "init_time" and "valid_time" attributes from MET NetCDF input files (#1346).

    • Statistics computations:

      • Modify the climatological Brier Score computation to match the NOAA/EMC VSDB method (#1684).
      • Add support for the Hersbach CRPS algorithm by add new columns to the ECNT line type (#1450).
      • Enhance MET to derive the Hersbach CRPSCL_EMP and CRPSS_EMP statistics from a single deterministic reference model (#1685).
      • Correct the climatological CRPS computation to match the NOAA/EMC VSDB method (#1451).
      • Refine log messages when verifying probabilities (#1502).

  • Application code:

    • ASCII2NC Tool:

      • Fix to handle bad records in little_r format (#1737).
      • Create empty output files for zero input observations instead of erroring out (#1630).

    • MADIS2NC Tool:

      • Clarify various error messages (#1409).

    • PB2NC Tool:

      • Fix intermittent segfault when deriving PBL (#1715).

    • Point2Grid Tool:

      • Support additional NetCDF point observation data sources (#1345, #1509, and #1511).
      • Support the 2-dimensional time variable in Himawari data files (#1580).
      • Create empty output files for zero input observations instead of erroring out (#1630).
      • Improve the point2grid runtime performance (#1421).
      • Process point observations by variable name instead of GRIB code (#1408).

    • GIS Tools:

      • Fix memory corruption bug in the gis_dump_dbf utility which causes it to abort at runtime (#1777).

    • Plot-Point-Obs Tool:

      • Overhaul Plot-Point-Obs to make it highly configurable (#213, #1528, and #1052).
      • Support regridding option in the config file (#1627).

    • Point-Stat Tool:

      • Add mpr_column and mpr_thresh configuration options to filter out matched pairs based on large fcst, obs, and climo differences (#1575).
      • Print the rejection code reason count log messages at verbosity level 2 for zero matched pairs (#1644).
      • Add detailed log messages when discarding observations (#1588).
      • Update log messages (#1514).
      • Enhance the validation of masking regions to check for non-unique masking region names (#1439).
      • Fix Point-Stat runtime error for some CF-complaint NetCDF files (#1782).

    • Grid-Stat Tool:

      • Add mpr_column and mpr_thresh configuration options to filter out matched pairs based on large fcst, obs, and climo differences (#1575).
      • Correct the climatological CDF values in the NetCDF matched pairs output files and correct the climatological probability values for climatgological distribution percentile (CDP) threshold types (#1638).

    • Stat-Analysis Tool:

      • Process multiple output thresholds and write multiple output line types in a single aggregate_stat job (#1735).
      • Skip writing job output to the logfile when the -out_stat option is provided (#1736).
      • Add -fcst_init_inc/_exc and -fcst_valid_inc/_exc job command filtering options to Stat-Analysis (#1135).
      • Add -column_exc job command option to exclude lines based on string values (#1733).
      • Fix Stat-Analysis failure when aggregating ECNT lines (#1706).

    • Grid-Diag Tool:

      • Fix bug when reading the same variable name from multiple data sources (#1694).

    • MODE Tool:

      • Update the MODE AREA_RATIO output column to list the forecast area divided by the observation area (#1643).
      • Incremental development toward the Multivariate MODE tool (#1282, #1284, and #1290).

    • TC-Pairs Tool:

      • Fix to report the correct number of lines read from input track data files (#1725).
      • Fix to read supported RI edeck input lines and ignore unsupported edeck probability line types (#1768).

    • TC-Stat Tool:

      • Add -column_exc job command option to exclude lines based on string values (#1733).

    • TC-Gen Tool:

      • Overhaul the genesis matching logic, add the development and operational scoring algorithms, and add many config file options (#1448).
      • Add config file options to filter data by initialization time (init_inc and init_exc) and hurricane basin (basin_mask) (#1626).
      • Add the genesis matched pair (GENMPR) output line type (#1597).
      • Add a gridded NetCDF output file with counts for genesis events and track points (#1430).
      • Enhance the matching logic and update several config options to support its S2S application (#1714).
      • Fix lead window filtering option (#1465).

    • IODA2NC Tool:

      • Add the new ioda2nc tool (#1355).