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Downloadable from our Releases page.

Please note:

In the near future, the minimum required version of libaec will be set to 1.1.4

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-2188] - Create codes handle from stream
[ECC-2204] - ecCodes linked statically and using an static libaec

[ECC-2193] - New centre code for WP-MIP
[ECC-2194] - GRIB2: covariance parameters skin temperature and co
[ECC-2200] - GRIB2: modelVersion aifs-ens-crps-v2
[ECC-2201] - GRIB2: chemId for Bromine oxides
[ECC-2196] - GRIB2: isotherm parameters in ERA6 on levtype sfc
[ECC-2197] - GRIB2: SPP parameters on AbstractSingleLevel with levtype=al
[ECC-2198] - GRIB2: accessor to set mars type
[ECC-2207] - GRIB2: Logarithm of surface pressure on model levels for ERA6
[ECC-2203] - Resolve issue with DestinE ExtremesDT parameters in 2.45.x
[ECC-2205] - GRIB2: New section 4 templates for derived forecast with constituentType and wave periods
[ECC-2212] - GRIB2: typeOflevel flightLevel and levtype fl
[ECC-2214] - GRIB2: local section for CURV diagnostics
[ECC-2217] - GRIB2: time-statistical templates for chemical parameters with optical and optical / src-sink
[ECC-2218] - GRIB2: levtype hl for post-mtg2 encodings
[ECC-2221] - Hydrological CEMS and C3S data refactoring of the encoding and the archival
[ECC-2223] - GRIB2: type of surface for probability parameter for significant wave height
[ECC-2224] - GRIB2: AIFS v2 with MTG2Switch 0

[ECC-2192] - Better error message when comparing strings
[ECC-2209] - Tools: bufr_compare does not display keys with missing values
[ECC-2213] - Python 3.14 support

Bug Fixes

[ECC-2122] - BUFR: Performance regression when extracting subsets from multi-subset messages
[ECC-2202] - GRIB: Memory allocation error after setting scaleValuesBy
[ECC-2206] - GRIB2: No typeOfLevel in PDTNs 99, 100, 101 and 102
[ECC-2210] - Tools: grib_ls with '-j' and empty output will generate invalid JSON
[ECC-2211] - Tools: bufr_compare does not report the presence of section 2
[ECC-2215] - GRIB2: Segmentation fault setting localDefinitionNumber=0
[ECC-2219] - Python bindings: High-level BUFR interface: set method not working for data keys
[ECC-2220] - Python bindings: High-level BUFR interface: setting string key truncates value