What's Changed

• Fixed an issue with grib2io.open class properties by @EricEngle-NOAA in #219
• Fixed issue with calculating validTime in the Xarray backend by @TylerWixtrom-NOAA in #222
• Added ability to correctly mask values to NaN when interpolating to stations where a station might be outside the grid domain by @EricEngle-NOAA in #226
• Add save_index options to the Xarray backend by @tsupinie in #225
• Fixed an issue to correctly handle negative scale factors values by @EricEngle-NOAA in #227
• Fixed an issue with an error return from parse_grib_index in the Xarray backend when filtering down to no messages by @AdamSchnapp in #228
• Updated NCEP GRIB2 tables to version 36.0.0

New Contributors

• @tsupinie made their first contribution in #225

Full Changelog: v2.6.0...v2.7.0

What's Changed

• Added DataTree support for the xarray backend by @bbakernoaa in #193
• Support for data_model kwarg in xarray backend by @TylerWixtrom-NOAA in #201
  • Support for data_model='nws-viz' which will add CF metadata to xarray objects.
• Use Cython's OpenMP bindings for iplib by @EricEngle-NOAA in #195
• Safer integer scaling of floating-point values by @EricEngle-NOAA in #198
• Support for decoding GRIB2 messages from bytes (not from grib2io.open()) @byphilipp in #199
• Support for Python 3.14 by @EricEngle-NOAA in #212
• grib2io-specific Index file support by @AdamSchnapp in #209
• Data shape and type checking when creating a GRIB2 message by @EricEngle-NOAA in #214
• Added a .copy() method for Grib2Message objects by @EricEngle-NOAA in #216
• NCEP GRIB2 tables updated to Version 35.0.0 - May 19, 2025

Full Changelog: v2.5.4...v2.6.0

What's Changed

• No code change in this release. This release removes tests and test data from the release package, significantly reducing the package size from ~100 MB to just around 1 MB.

Full Changelog: v2.5.3...v2.5.4

This is a very minor patch release.

What's Changed

• Removed the duration attribute from being added to the lead time in the Grib2Message.__str__.
• Updated NCEP GRIB2 tables.

Notice

A near-future grib2io release will remove the test data from the release packages, significantly reducing file size.

Full Changelog: v2.5.2...v2.5.3

What's Changed

• Fixed issue with interpolation when using xarray backend or 3D array by @EricEngle-NOAA in #191
• Related to #191 the interpolation functions will now check the input data-type and convert to np.float32 if needed. This is the data type required since grib2io links to the 4-byte NCEPLIBS-ip library.

Full Changelog: v2.5.1...v2.5.2

What's Changed

• Improved setup.py when building with a static NCEPLIBS-ip library by @EricEngle-NOAA in #186
• Fixed bug with leadTime attribute by @EricEngle-NOAA in #188

Note about NCEPLIBS-ip

• The minimum version for NCEPLIBS-ip is now v5.1.0. It should have been this since grib2io v2.4.0.

Full Changelog: v2.5.0...v2.5.1

What's Changed

• Support for NDFD WWA Hazard Keys by @EricEngle-NOAA in #179
• Added section6 dataclass array and bitMapFlag dataclass attribute linked to BitMapFlag descriptor class by @EricEngle-NOAA in #179

Full Changelog: v2.4.0...v2.5.0

Introduction

This is a significant release for grib2io -- notably the refactoring of the g2clib Cython extension module and the introduction of a new Cython extension module, iplib, that provides an interface to the NCEPLIBS-ip Fortran interpolation library. This now means that grib2io-interp is no longer necessary to install as an additional component and its development is no longer active.

These changes also now make grib2io available for Python 3.13 and NumPy 2.x

What's Changed

• Clean up date/time attribute setting. by @EricEngle-NOAA in #159
• Add aerosol related updates by @bbakernoaa in #161
• Fix dimensionality bug in the xarray backend by @EricEngle-NOAA in #165
• Fix incorrect leadtime for sub hourly values by @EricEngle-NOAA in #168
• New Cython extension module, iplib, to interface the NCEPLIBS-ip with support for OpenMP threading setting and getting by @EricEngle-NOAA in #170
• Refactor g2clib Cython extension module by @EricEngle-NOAA in #171
• Support for Python 3.13 and numpy 2.x by @EricEngle-NOAA in #173
• Updates to setup.py to allow more control when building with static libs by @EricEngle-NOAA in #175

New Contributors

• @bbakernoaa made their first contribution in #161

Full Changelog: v2.3.0...v2.4.0

What's Changed

• New method, subset(), for Grib2Message objects to perform spatial subsetting by @TimothyCera-NOAA in #155
• Added new da.grib2io.update_attrs() to update message attributes by @TimothyCera-NOAA in #154
• NCEP GRIB2 tables updated to version 33.0.0

Full Changelog: v2.2.5...v2.3.0

What's Changed

• Fixed to_grib2() writing an xarray without dimensional coordinates by @TimothyCera-NOAA in #152
• Fixed issue where the nbytes property was not being calculated when printing Datasets on xarray>2024.1.0 by @TimothyCera-NOAA in #153

Full Changelog: v2.2.4...v2.2.5