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Downloadable from our Releases page.

Please note:

GRIB2 templates 4.51 and 4.91 had the keys "codeFigure" and "categoryType" in the wrong order.
This has been corrected to be in line with WMO Manual on Codes. We apologise for any inconvenience caused.

Please note: There is a new webpage for the Migration to GRIB2: Migration to GRIB2
This webpage also includes a section where changes in the parameter encodings for the coming ecCodes versions are documented: Changes in the parameter encodings

New Features/Improvements

[ECC-1781] - GRIB Geoiterator: Support reduced Gaussian grid with rotation
[ECC-1784] - GRIB Geoiterator: Support HEALPix nested ordering
[ECC-1785] - BUFR: Allow encoding satelliteID when rdbType=30
[ECC-1780] - GRIB HEALPix: In the 'geography' namespace replace 'pointsOrdering' with 'orderingConvention'
[ECC-1777] - GRIB: Validate dataDate and dataTime on input
[ECC-1769] - GRIB: Rename keys FirstLatitude and SecondLatitude
[ECC-1767] - GRIB2: Add keys to properly compute wavelengths in section 4 optical templates
[ECC-1779] - GRIB2: Add keys to identify experimental and deprecated templates
[ECC-1762] - GRIB2: Add GRIB1 key name aliases to wave spectra template with explicit list
[ECC-1765] - GRIB2: Move upward sea water velocity encoding to correct typeOfLevel
[ECC-1766] - GRIB2: EERIE (European Eddy RIch Earth System Models) metadata support
[ECC-1775] - GRIB2: WMO conforming snowfall water equivalent parameters for DestinationEarth
[ECC-1776] - GRIB2: Additional activity and experiment table entries for DestinE ClimateDT
[ECC-1786] - GRIB2: Add local ECMWF parameters to pseudo-centre CERISE
[ECC-1787] - GRIB2: Add time-mean versions of existing parameters
[ECC-1788] - GRIB2: Add mean parameters for ECMWF and CERISE
[ECC-1789] - GRIB2: Add parameters 51/52 to pseudo-centre CERISE
[ECC-1791] - GRIB2: Modify and remove maximum individual wave parameters
[ECC-1794] - GRIB2: DestinE data does not have the MARS domain key
[ECC-1796] - GRIB2: Implement stepRange indexing for DestinE ExtremesDT and On-Demand ExtremesDT data
[ECC-1798] - GRIB2: New parameter encodings for DestinationEarth

[ECC-1772] - GRIB2: activate stepRange for levtype o2d/o3d under stream mmsf type fc
[ECC-1774] - GRIB2: Add MARS system keyword for class Cerise mmsf/fc and msmm.fcmean
[ECC-1782] - Repacking sample GRIB2.tmpl fails when ECCODES_GRIB_DATA_QUALITY_CHECKS=1

Bug Fixes

[ECC-1364] - GRIB: Geoiterator for Lambert Conformal in the southern hemisphere
[ECC-1768] - GRIB2: Issue with setting PDTN 8, stepUnits and step at the same time
[ECC-1770] - GRIB2: Template 4.1101 has incorrect size and octet layout
[ECC-1771] - Build with -DBUILD_SHARED_LIBS=OFF on the Atos HPC doesn't work
[ECC-1778] - Crash: Decoding invalid BUFR file
[ECC-1783] - grib_to_netcdf: No error message when input file has invalid fields
[ECC-1792] - GRIB: headers_only cloning does not work as expected after changing geography
[ECC-1795] - Geoiterator for polar stereographic: Keys orientationOfTheGridInDegrees and LaDInDegrees decoded as integers
[ECC-1797] - GRIB2: Correct order of keys in templates 4.51 and 4.91 regarding the WMO Manual on Codes