Issues

• Large memory use when using Xarray to read with engine="netcdf4"

  ESMValGroup/ESMValCore#3244 · Filter by author bouweandela opened on Oct 14, 2026

• Some tests fail when ESMVALTOOL_CONFIG_DIR environment variable is set

  testing
  ESMValGroup/ESMValCore#3209 · Filter by author schlunma opened on Aug 26, 2026

• Cancelling ESMValTool runs with CTRL-C does not work as well anymore when intake-esgf data source is used

  bear at a dinner party
  ESMValGroup/ESMValCore#3162 · Filter by author schlunma opened on Jul 13, 2026
  5

• Concatenation of 3D cloud data sometimes fails

  bug
  Bug

  ESMValGroup/ESMValCore#3150 · Filter by author schlunma opened on Jul 7, 2026 · v2.15.0
  14

• Adding ttest as a preprocessor function

  enhancement
  ESMValGroup/ESMValCore#3132 · Filter by author FranziskaWinterstein opened on Jun 24, 2026

• Use guess bounds for 2D coordinates

  ESMValGroup/ESMValCore#3116 · Filter by author bouweandela opened on Jun 19, 2026

• Add cell area guessing for 2D coordinates to area_statistics preprocessor function

  ESMValGroup/ESMValCore#3115 · Filter by author bouweandela opened on Jun 19, 2026
  1

• CMIP7 custom table entry

  help wanted
  ESMValGroup/ESMValCore#3095 · Filter by author hb326 opened on Jun 1, 2026
  2

  

• CMIP7 Pressure coordinates have various long_names

  ESMValGroup/ESMValCore#3093 · Filter by author bettina-gier opened on May 29, 2026
  3

• Make it possible to use Python functions outside of ESMValCore as preprocessor functions

  enhancementpreprocessor
  ESMValGroup/ESMValCore#3085 · Filter by author bouweandela opened on May 20, 2026
  6

• Project or Data-source specific check_level

  enhancement
  Feature

  ESMValGroup/ESMValCore#3077 · Filter by author k-a-webb opened on May 13, 2026
  1

• Use doi attribute to populate data citation file

  ESMValGroup/ESMValCore#3073 · Filter by author bouweandela opened on May 12, 2026

• iris.std_names.STD_NAMES check does not include CMIP7 standard names

  ESMValGroup/ESMValCore#3058 · Filter by author k-a-webb opened on Apr 29, 2026
  5

• Preprocessor function extract_region does not work with 1D grid of CMIP6 AWI-CM-1-1-MR and ICON-ESM-LR

  preprocessor
  ESMValGroup/ESMValCore#3057 · Filter by author bouweandela opened on Apr 29, 2026

• Parametric vertical coordinates are not interpreted correctly

  ESMValGroup/ESMValCore#3056 · Filter by author bouweandela opened on Apr 29, 2026

• Jupyter notebooks are outdated

  documentation
  ESMValGroup/ESMValCore#3052 · Filter by author bouweandela opened on Apr 24, 2026

• Unstructured linear regridding seems to produce the wrong results on OSX ARM64

  ESMValGroup/ESMValCore#3045 · Filter by author bouweandela opened on Apr 20, 2026
  4

• Improve configuration for automatically adding supplementary variables

  ESMValGroup/ESMValCore#3031 · Filter by author bouweandela opened on Mar 27, 2026
  1

• Skip online test_icon tests when eg requests timeout

  testing
  ESMValGroup/ESMValCore#3007 · Filter by author valeriupredoi opened on Mar 4, 2026
  

• long_name may not be standardized in CMIP projects

  ESMValGroup/ESMValCore#3003 · Filter by author bouweandela opened on Feb 25, 2026

• Update required input variables for CMIP7 derived variables

  ESMValGroup/ESMValCore#2984 · Filter by author bouweandela opened on Feb 18, 2026

• Make the mip facet optional

  ESMValGroup/ESMValCore#2970 · Filter by author bouweandela opened on Feb 9, 2026
  1

• Reduce global state and use esmvalcore.config.Session objects instead

  ESMValGroup/ESMValCore#2954 · Filter by author bouweandela opened on Jan 26, 2026

• Make data deduplication between IntakeESGFDataSource and LocalDataSource work

  enhancement
  ESMValGroup/ESMValCore#2943 · Filter by author bouweandela opened on Jan 15, 2026

• Segmentation fault when loading grib

  bugobservations
  Task

  ESMValGroup/ESMValCore#2938 · Filter by author malininae opened on Jan 8, 2026
  1