Esmvalcore

------

This release includes

Bug fixes
~~~~~~~~~

- Update config-user.yml template with correct drs entries for CEDA-JASMIN (:pull:`1184`) by :user:`valeriupredoi`
- Enhancing MIROC5 fix for hfls and evspsbl (:pull:`1192`) by :user:`katjaweigel`
- Fix alignment of daily data with inconsistent calendars in multimodel statistics (:pull:`1212`) by :user:`Peter9192`
- Pin cf-units, remove github actions test for Python 3.6 and fix test_access1_0 and test_access1_3 to use cf-units for comparisons (:pull:`1197`) by :user:`valeriupredoi`
- Fixed search for fx files when no ``mip`` is given (:pull:`1216`) by :user:`schlunma`
- Make sure climate statistics always returns original dtype (:pull:`1237`) by :user:`zklaus`
- Bugfix for regional regridding when non-integer range is passed (:pull:`1231`) by :user:`stefsmeets`
- Make sure area_statistics preprocessor always returns original dtype (:pull:`1239`) by :user:`zklaus`
- Add "." (dot) as allowed separation character for the time range group (:pull:`1248`) by :user:`zklaus`

Documentation
~~~~~~~~~~~~~

- Add a link to the instructions to use pre-installed versions on HPC clusters (:pull:`1186`) by :user:`remi-kazeroni`
- Bugfix release: set version to 2.3.1 (:pull:`1253`) by :user:`zklaus`

Fixes for datasets
~~~~~~~~~~~~~~~~~~

- Set circular attribute in MCM-UA-1-0 fix (:pull:`1178`) by :user:`sloosvel`
- Fixed time coordinate of MIROC-ESM (:pull:`1188`) by :user:`schlunma`

Preprocessor
~~~~~~~~~~~~

- Filter warnings about collapsing multi-model dimension in multimodel statistics preprocessor function (:pull:`1215`) by :user:`bouweandela`
- Remove fx variables before computing multimodel statistics (:pull:`1220`) by :user:`sloosvel`

Installation
~~~~~~~~~~~~

- Pin lower bound for iris to 3.0.2 (:pull:`1206`) by :user:`valeriupredoi`
- Pin `iris<3.0.4` to ensure we still (sort of) support Python 3.6 (:pull:`1252`) by :user:`valeriupredoi`

Improvements
~~~~~~~~~~~~

- Add test to verify behaviour for scalar height coord for tas in multi-model (:pull:`1209`) by :user:`Peter9192`
- Sort missing years in "No input data available for years" message (:pull:`1225`) by :user:`ledm`


.. _changelog-v2-3-0:

------

This release includes

Bug fixes
~~~~~~~~~

- Extend preprocessor multi_model_statistics to handle data with "altitude" coordinate (:pull:`1010`) by :user:`axel-lauer`
- Remove scripts included with CMOR tables (:pull:`1011`) by :user:`bouweandela`
- Avoid side effects in extract_season (:pull:`1019`) by :user:`jvegreg`
- Use nearest scheme to avoid interpolation errors with masked data in regression test (:pull:`1021`) by :user:`stefsmeets`
- Move _get_time_bounds from preprocessor._time to cmor.check to avoid circular import with cmor module (:pull:`1037`) by :user:`valeriupredoi`
- Fix test that makes conda build fail (:pull:`1046`) by :user:`valeriupredoi`
- Fix 'positive' attribute for rsns/rlns variables (:pull:`1051`) by :user:`lukasbrunner`
- Added preprocessor mask_multimodel (:pull:`767`) by :user:`schlunma`
- Fix bug when fixing bounds after fixing longitude values (:pull:`1057`) by :user:`sloosvel`
- Run conda build parallel AND sequential tests (:pull:`1065`) by :user:`valeriupredoi`
- Add key to id_prop (:pull:`1071`) by :user:`lukasbrunner`
- Fix bounds after reversing coordinate values (:pull:`1061`) by :user:`sloosvel`
- Fixed --skip-nonexistent option (:pull:`1093`) by :user:`schlunma`
- Do not consider CMIP5 variable sit to be the same as sithick from CMIP6 (:pull:`1033`) by :user:`bouweandela`
- Improve finding date range in filenames (enforces separators) (:pull:`1145`) by :user:`senesis`
- Review fx handling (:pull:`1147`) by :user:`sloosvel`
- Fix lru cache decorator with explicit call to method (:pull:`1172`) by :user:`valeriupredoi`
- Update _volume.py (:pull:`1174`) by :user:`ledm`

Deprecations
~~~~~~~~~~~~



Documentation
~~~~~~~~~~~~~

- Final changelog for 2.3.0 (:pull:`1163`) by :user:`zklaus`
- Set version to 2.3.0 (:pull:`1162`) by :user:`zklaus`
- Fix documentation build (:pull:`1006`) by :user:`bouweandela`
- Add labels required for linking from ESMValTool docs (:pull:`1038`) by :user:`bouweandela`
- Update contribution guidelines (:pull:`1047`) by :user:`bouweandela`
- Fix basestring references in documentation (:pull:`1106`) by :user:`jvegreg`
- Updated references master to main (:pull:`1132`) by :user:`axel-lauer`
- Add instructions how to use the central installation at DKRZ-Mistral (:pull:`1155`) by :user:`remi-kazeroni`

Fixes for datasets
~~~~~~~~~~~~~~~~~~

- Added fixes for various CMIP5 datasets, variable cl (3-dim cloud fraction) (:pull:`1017`) by :user:`axel-lauer`
- Added fixes for hybrid level coordinates of CESM2 models (:pull:`882`) by :user:`schlunma`
- Extending LWP fix for CMIP6 models (:pull:`1049`) by :user:`axel-lauer`
- Add fixes for the net & up radiation variables from ERA5 (:pull:`1052`) by :user:`lukasbrunner`
- Add derived variable rsus (:pull:`1053`) by :user:`lukasbrunner`
- Supported `mip`-level fixes (:pull:`1095`) by :user:`schlunma`
- Fix erroneous use of `grid_latitude` and `grid_longitude` and cleaned ocean grid fixes (:pull:`1092`) by :user:`schlunma`
- Fix for pr of miroc5 (:pull:`1110`) by :user:`remi-kazeroni`
- Ocean depth fix for cnrm_esm2_1, gfdl_esm4, ipsl_cm6a_lr datasets + mcm_ua_1_0 (:pull:`1098`) by :user:`tomaslovato`
- Fix for uas variable of the MCM_UA_1_0 dataset (:pull:`1102`) by :user:`remi-kazeroni`
- Fixes for sos and siconc of BCC models (:pull:`1090`) by :user:`remi-kazeroni`
- Run fgco2 fix for all CESM2 models (:pull:`1108`) by :user:`LisaBock`
- Fixes for the siconc variable of CMIP6 models (:pull:`1105`) by :user:`remi-kazeroni`
- Fix wrong sign for land surface flux (:pull:`1113`) by :user:`LisaBock`
- Fix for pr of EC_EARTH (:pull:`1116`) by :user:`remi-kazeroni`

CMOR standard
~~~~~~~~~~~~~

- Format cmor related files (:pull:`976`) by :user:`jvegreg`
- Check presence of time bounds and guess them if needed (:pull:`849`) by :user:`sloosvel`
- Add custom variable "tasaga" (:pull:`1118`) by :user:`LisaBock`
- Find files for CMIP6 DCPP startdates (:pull:`771`) by :user:`sloosvel`

Preprocessor
~~~~~~~~~~~~

- Update tests for multimodel statistics preprocessor (:pull:`1023`) by :user:`stefsmeets`
- Raise in extract_season and extract_month if result is None (:pull:`1041`) by :user:`jvegreg`
- Allow selection of shapes in extract_shape (:pull:`764`) by :user:`jvegreg`
- Add option for regional regridding to regrid preprocessor (:pull:`1034`) by :user:`stefsmeets`
- Load fx variables as cube cell measures / ancillary variables (:pull:`999`) by :user:`sloosvel`
- Check horizontal grid before regridding (:pull:`507`) by :user:`BenMGeo`
- Clip irregular grids (:pull:`245`) by :user:`bouweandela`
- Use native iris functions in multi-model statistics (:pull:`1150`) by :user:`Peter9192`

Notebook API (experimental)
~~~~~~~~~~~~~~~~~~~~~~~~~~~



Automatic testing
~~~~~~~~~~~~~~~~~

- Report coverage for tests that run on any pull request (:pull:`994`) by :user:`bouweandela`
- Install ESMValTool sample data from PyPI (:pull:`998`) by :user:`jvegreg`
- Fix tests for multi-processing with spawn method (i.e. macOSX with Python>3.8) (:pull:`1003`) by :user:`bvreede`
- Switch to running the Github Action test workflow every 3 hours in single thread mode to observe if Segmentation Faults occur (:pull:`1022`) by :user:`valeriupredoi`
- Revert to original Github Actions test workflow removing the 3-hourly test run with -n 1 (:pull:`1025`) by :user:`valeriupredoi`
- Avoid stale cache for multimodel statistics regression tests (:pull:`1030`) by :user:`bouweandela`
- Add newer Python versions in OSX to Github Actions (:pull:`1035`) by :user:`bvreede`
- Add tests for type annotations with mypy (:pull:`1042`) by :user:`stefsmeets`
- Run problematic cmor tests sequentially to avoid segmentation faults on CircleCI (:pull:`1064`) by :user:`valeriupredoi`
- Test installation of esmvalcore from conda-forge (:pull:`1075`) by :user:`valeriupredoi`
- Added additional test cases for integration tests of data_finder.py (:pull:`1087`) by :user:`schlunma`
- Pin cf-units and fix tests (cf-units>=2.1.5) (:pull:`1140`) by :user:`valeriupredoi`
- Fix failing CircleCI tests (:pull:`1167`) by :user:`bouweandela`
- Fix test failing due to fx files chosen differently on different OS's (:pull:`1169`) by :user:`valeriupredoi`
- Compare datetimes instead of strings in _fixes/cmip5/test_access1_X.py (:pull:`1173`) by :user:`valeriupredoi`
- Pin Python to 3.9 in environment.yml on CircleCI and skip mypy tests in conda build (:pull:`1176`) by :user:`bouweandela`

Installation
~~~~~~~~~~~~

- Update yamale to version 3 (:pull:`1059`) by :user:`zklaus`

Improvements
~~~~~~~~~~~~

- Refactor diagnostics / tags management (:pull:`939`) by :user:`stefsmeets`
- Support multiple paths in input_dir (:pull:`1000`) by :user:`jvegreg`
- Generate HTML report with recipe output (:pull:`991`) by :user:`stefsmeets`
- Add timeout to requests.get in _citation.py (:pull:`1091`) by :user:`SarahAlidoost`
- Add SYNDA drs for CMIP5 and CMIP6 (closes 582) (:pull:`583`) by :user:`zklaus`
- Add basic support for variable mappings (:pull:`1124`) by :user:`zklaus`
- Handle IPSL-CM6 (:pull:`1153`) by :user:`senesis`


.. _changelog-v2-2-0:

------

Highlights
~~~~~~~~~~

ESMValCore is now using the recently released `Iris 3 <https://scitools-iris.readthedocs.io/en/latest/whatsnew/3.0.html>`__.
We acknowledge that this change may impact your work, as Iris 3 introduces
several changes that are not backward-compatible, but we think that moving forward is the best
decision for the tool in the long term.

This release is also the first one including support for downloading CMIP6 data
using Synda and we have also started supporting Python 3.9. Give it a try!


This release includes

Bug fixes
~~~~~~~~~

- Fix path settings for DKRZ/Mistral (:pull:`852`) by :user:`bouweandela`
- Change logic for calling the diagnostic script to avoid problems with scripts where the executable bit is accidentally set (:pull:`877`) by :user:`bouweandela`
- Fix overwriting in generic level check (:pull:`886`) by :user:`sloosvel`
- Add double quotes to script args in rerun screen message when using vprof profiling (:pull:`897`) by :user:`valeriupredoi`
- Simplify time handling in multi-model statistics preprocessor (:pull:`685`) by :user:`Peter9192`
- Fix links to Iris documentation (:pull:`966`) by :user:`jvegreg`
- Bugfix: Fix units for MSWEP data (:pull:`986`) by :user:`stefsmeets`

Deprecations
~~~~~~~~~~~~

- Deprecate defining write_plots and write_netcdf in config-user file (:pull:`808`) by :user:`bouweandela`

Documentation
~~~~~~~~~~~~~

- Fix numbering of steps in release instructions (:pull:`838`) by :user:`bouweandela`
- Add labels to changelogs of individual versions for easy reference (:pull:`899`) by :user:`zklaus`
- Make CircleCI badge specific to main branch (:pull:`902`) by :user:`bouweandela`
- Fix docker build badge url (:pull:`906`) by :user:`stefsmeets`
- Update github PR template (:pull:`909`) by :user:`stefsmeets`
- Refer to ESMValTool GitHub discussions page in the error message (:pull:`900`) by :user:`bouweandela`
- Support automatically closing issues (:pull:`922`) by :user:`bouweandela`
- Fix checkboxes in PR template (:pull:`931`) by :user:`stefsmeets`
- Change in config-user defaults and documentation with new location for esmeval OBS data on JASMIN (:pull:`958`) by :user:`valeriupredoi`
- Update Core Team info (:pull:`942`) by :user:`axel-lauer`
- Update iris documentation URL for sphinx (:pull:`964`) by :user:`bouweandela`
- Set version to 2.2.0 (:pull:`977`) by :user:`jvegreg`
- Add first draft of v2.2.0 changelog (:pull:`983`) by :user:`jvegreg`
- Add checkbox in PR template to assign labels (:pull:`985`) by :user:`jvegreg`
- Update install.rst (:pull:`848`) by :user:`bascrezee`
- Change the order of the publication steps (:pull:`984`) by :user:`jvegreg`
- Add instructions how to use esmvaltool from HPC central installations (:pull:`841`) by :user:`valeriupredoi`

Fixes for datasets
~~~~~~~~~~~~~~~~~~

- Fixing unit for derived variable rsnstcsnorm to prevent overcorrection2 (:pull:`846`) by :user:`katjaweigel`
- Cmip6 fix awi cm 1 1 mr (:pull:`822`) by :user:`mwjury`
- Cmip6 fix ec earth3 veg (:pull:`836`) by :user:`mwjury`
- Changed latitude longitude fix from Tas to AllVars. (:pull:`916`) by :user:`katjaweigel`
- Fix for precipitation (pr) to use ERA5-Land cmorizer (:pull:`879`) by :user:`katjaweigel`
- Cmip6 fix ec earth3 (:pull:`837`) by :user:`mwjury`
- Cmip6_fix_fgoals_f3_l_Amon_time_bnds (:pull:`831`) by :user:`mwjury`
- Fix for FGOALS-f3-L sftlf (:pull:`667`) by :user:`mwjury`
- Improve ACCESS-CM2 and ACCESS-ESM1-5 fixes and add CIESM and CESM2-WACCM-FV2 fixes for cl, clw and cli (:pull:`635`) by :user:`axel-lauer`
- Add fixes for cl, cli, clw and tas for several CMIP6 models (:pull:`955`) by :user:`schlunma`
- Dataset fixes for MSWEP (:pull:`969`) by :user:`stefsmeets`
- Dataset fixes for: ACCESS-ESM1-5, CanESM5, CanESM5 for carbon cycle (:pull:`947`) by :user:`bettina-gier`
- Fixes for KIOST-ESM (CMIP6) (:pull:`904`) by :user:`remi-kazeroni`
- Fixes for AWI-ESM-1-1-LR (CMIP6, piControl) (:pull:`911`) by :user:`remi-kazeroni`

CMOR standard
~~~~~~~~~~~~~

- CMOR check generic level coordinates in CMIP6 (:pull:`598`) by :user:`sloosvel`
- Update CMIP6 tables to 6.9.33 (:pull:`919`) by :user:`jvegreg`
- Adding custom variables for tas uncertainty (:pull:`924`) by :user:`LisaBock`
- Remove monotonicity coordinate check for unstructured grids (:pull:`965`) by :user:`jvegreg`

Preprocessor
~~~~~~~~~~~~

- Added clip_start_end_year preprocessor (:pull:`796`) by :user:`schlunma`
- Add support for downloading CMIP6 data with Synda (:pull:`699`) by :user:`bouweandela`
- Add multimodel tests using real data (:pull:`856`) by :user:`stefsmeets`
- Add plev/altitude conversion to extract_levels (:pull:`892`) by :user:`axel-lauer`
- Add possibility of custom season extraction. (:pull:`247`) by :user:`mwjury`
- Adding the ability to derive xch4 (:pull:`783`) by :user:`hb326`
- Add preprocessor function to resample time and compute x-hourly statistics (:pull:`696`) by :user:`jvegreg`
- Fix duplication in preprocessors DEFAULT_ORDER introduced in 696 (:pull:`973`) by :user:`jvegreg`
- Use consistent precision in multi-model statistics calculation and update reference data for tests (:pull:`941`) by :user:`Peter9192`
- Refactor multi-model statistics code to facilitate ensemble stats and lazy evaluation (:pull:`949`) by :user:`Peter9192`
- Add option to exclude input cubes in output of multimodel statistics to solve an issue introduced by 949 (:pull:`978`) by :user:`Peter9192`


Automatic testing
~~~~~~~~~~~~~~~~~

- Pin cftime>=1.3.0 to have newer string formatting in and fix two tests (:pull:`878`) by :user:`valeriupredoi`
- Switched miniconda conda setup hooks for Github Actions workflows (:pull:`873`) by :user:`valeriupredoi`
- Add test for latest version resolver (:pull:`874`) by :user:`stefsmeets`
- Update codacy coverage reporter to fix coverage (:pull:`905`) by :user:`nielsdrost`
- Avoid hardcoded year in tests and add improvement to plev test case (:pull:`921`) by :user:`bouweandela`
- Pin scipy to less than 1.6.0 until :issue:`927` gets resolved (:pull:`928`) by :user:`valeriupredoi`
- Github Actions: change time when conda install test runs (:pull:`930`) by :user:`valeriupredoi`
- Remove redundant test line from test_utils.py (:pull:`935`) by :user:`valeriupredoi`
- Removed netCDF4 package from integration tests of fixes (:pull:`938`) by :user:`schlunma`
- Use new conda environment for installing ESMValCore in Docker containers (:pull:`951`) by :user:`bouweandela`

Notebook API (experimental)
~~~~~~~~~~~~~~~~~~~~~~~~~~~

- Implement importable config object in experimental API submodule (:pull:`868`) by :user:`stefsmeets`
- Add loading and running recipes to the notebook API (:pull:`907`) by :user:`stefsmeets`
- Add displaying and loading of recipe output to the notebook API (:pull:`957`) by :user:`stefsmeets`
- Add functionality to run single diagnostic task to notebook API (:pull:`962`) by :user:`stefsmeets`

Improvements
~~~~~~~~~~~~

- Create CODEOWNERS file (:pull:`809`) by :user:`jvegreg`
- Remove code needed for Python <3.6 (:pull:`844`) by :user:`bouweandela`
- Add requests as a dependency (:pull:`850`) by :user:`bouweandela`
- Pin Python to less than 3.9 (:pull:`870`) by :user:`valeriupredoi`
- Remove numba dependency (:pull:`880`) by :user:`schlunma`
- Add Listing and finding recipes to the experimental notebook API (:pull:`901`) by :user:`stefsmeets`
- Skip variables that don't have dataset or additional_dataset keys (:pull:`860`) by :user:`valeriupredoi`
- Refactor logging configuration (:pull:`933`) by :user:`stefsmeets`
- Xco2 derivation (:pull:`913`) by :user:`bettina-gier`
- Working environment for Python 3.9 (pin to !=3.9.0) (:pull:`885`) by :user:`valeriupredoi`
- Print source file when using config get_config_user command (:pull:`960`) by :user:`valeriupredoi`
- Switch to Iris 3 (:pull:`819`) by :user:`stefsmeets`
- Refactor tasks (:pull:`959`) by :user:`stefsmeets`
- Restore task summary in debug log after 959 (:pull:`981`) by :user:`bouweandela`
- Pin pre-commit hooks (:pull:`974`) by :user:`stefsmeets`
- Improve error messages when data is missing (:pull:`917`) by :user:`jvegreg`
- Set remove_preproc_dir to false in default config-user (:pull:`979`) by :user:`valeriupredoi`
- Move fiona to be installed from conda forge (:pull:`987`) by :user:`valeriupredoi`
- Re-added fiona in setup.py (:pull:`990`) by :user:`valeriupredoi`

.. _changelog-v2-1-0:

------

This release includes

Bug fixes
~~~~~~~~~

- Set unit=1 if anomalies are standardized (:pull:`727`) by :user:`bascrezee`
- Fix crash for FGOALS-g2 variables without longitude coordinate (:pull:`729`) by :user:`bouweandela`
- Improve variable alias management (:pull:`595`) by :user:`jvegreg`
- Fix area_statistics fx files loading (:pull:`798`) by :user:`jvegreg`
- Fix units after derivation (:pull:`754`) by :user:`schlunma`

Documentation
~~~~~~~~~~~~~

- Update v2.0.0 release notes with final additions (:pull:`722`) by :user:`bouweandela`
- Update package description in setup.py (:pull:`725`) by :user:`mattiarighi`
- Add installation instructions for pip installation (:pull:`735`) by :user:`bouweandela`
- Improve config-user documentation (:pull:`740`) by :user:`bouweandela`
- Update the zenodo file with contributors (:pull:`807`) by :user:`valeriupredoi`
- Improve command line run documentation (:pull:`721`) by :user:`jvegreg`
- Update the zenodo file with contributors (continued) (:pull:`810`) by :user:`valeriupredoi`

Improvements
~~~~~~~~~~~~

- Reduce size of docker image (:pull:`723`) by :user:`jvegreg`
- Add 'test' extra to installation, used by docker development tag (:pull:`733`) by :user:`bouweandela`
- Correct dockerhub link (:pull:`736`) by :user:`bouweandela`
- Create action-install-from-pypi.yml (:pull:`734`) by :user:`valeriupredoi`
- Add pre-commit for linting/formatting (:pull:`766`) by :user:`stefsmeets`
- Run tests in parallel and when building conda package (:pull:`745`) by :user:`bouweandela`
- Readable exclude pattern for pre-commit (:pull:`770`) by :user:`stefsmeets`
- Github Actions Tests (:pull:`732`) by :user:`valeriupredoi`
- Remove isort setup to fix formatting conflict with yapf (:pull:`778`) by :user:`stefsmeets`
- Fix yapf-isort import formatting conflict (Fixes 777) (:pull:`784`) by :user:`stefsmeets`
- Sorted output for `esmvaltool recipes list` (:pull:`790`) by :user:`stefsmeets`
- Replace vmprof with vprof (:pull:`780`) by :user:`valeriupredoi`
- Update CMIP6 tables to 6.9.32 (:pull:`706`) by :user:`jvegreg`
- Default config-user path now set in config-user read function (:pull:`791`) by :user:`jvegreg`
- Add custom variable lweGrace (:pull:`692`) by :user:`bascrezee`
- Create Github Actions workflow to build and deploy on Test PyPi and PyPi (:pull:`820`) by :user:`valeriupredoi`
- Build and publish the esmvalcore package to conda via Github Actions workflow (:pull:`825`) by :user:`valeriupredoi`

Fixes for datasets
~~~~~~~~~~~~~~~~~~

- Fix cmip6 models (:pull:`629`) by :user:`npgillett`
- Fix siconca variable in EC-Earth3 and EC-Earth3-Veg models in amip simulation (:pull:`702`) by :user:`egalytska`

Preprocessor
~~~~~~~~~~~~

- Move cmor_check_data to early in preprocessing chain (:pull:`743`) by :user:`bouweandela`
- Add RMS iris analysis operator to statistics preprocessor functions (:pull:`747`) by :user:`pcosbsc`
- Add surface chlorophyll concentration as a derived variable (:pull:`720`) by :user:`sloosvel`
- Use dask to reduce memory consumption of extract_levels for masked data (:pull:`776`) by :user:`valeriupredoi`

.. _changelog-v2-0-0:

------

This release includes

Bug fixes
~~~~~~~~~

- Fixed derivation of co2s (:pull:`594`) by :user:`schlunma`
- Padding while cropping needs to stay within sane bounds for shapefiles that span the whole Earth (:pull:`626`) by :user:`valeriupredoi`
- Fix concatenation of a single cube (:pull:`655`) by :user:`bouweandela`
- Fix mask fx dict handling not to fail if empty list in values (:pull:`661`) by :user:`valeriupredoi`
- Preserve metadata during anomalies computation when using iris cubes difference (:pull:`652`) by :user:`valeriupredoi`
- Avoid crashing when there is directory 'esmvaltool' in the current working directory (:pull:`672`) by :user:`valeriupredoi`
- Solve bug in ACCESS1 dataset fix for calendar. (:pull:`671`) by :user:`Peter9192`
- Fix the syntax for adding multiple ensemble members from the same dataset (:pull:`678`) by :user:`SarahAlidoost`
- Fix bug that made preprocessor with fx files fail in rare cases (:pull:`670`) by :user:`schlunma`
- Add support for string coordinates (:pull:`657`) by :user:`jvegreg`
- Fixed the shape extraction to account for wraparound shapefile coords (:pull:`319`) by :user:`valeriupredoi`
- Fixed bug in time weights calculation (:pull:`695`) by :user:`schlunma`
- Fix diagnostic filter (:pull:`713`) by :user:`jvegreg`

Documentation
~~~~~~~~~~~~~

- Add pandas as a requirement for building the documentation (:pull:`607`) by :user:`bouweandela`
- Document default order in which preprocessor functions are applied (:pull:`633`) by :user:`bouweandela`
- Add pointers about data loading and CF standards to documentation (:pull:`571`) by :user:`valeriupredoi`
- Config file populated with site-specific data paths examples (:pull:`619`) by :user:`valeriupredoi`
- Update Codacy badges (:pull:`643`) by :user:`bouweandela`
- Update copyright info on readthedocs (:pull:`668`) by :user:`bouweandela`
- Updated references to documentation (now docs.esmvaltool.org) (:pull:`675`) by :user:`axel-lauer`
- Add all European grants to Zenodo (:pull:`680`) by :user:`bouweandela`
- Update Sphinx to v3 or later (:pull:`683`) by :user:`bouweandela`
- Increase version to 2.0.0 and add release notes (:pull:`691`) by :user:`bouweandela`
- Update setup.py and README.md for use on PyPI (:pull:`693`) by :user:`bouweandela`
- Suggested Documentation changes (:pull:`690`) by :user:`ssmithClimate`

Improvements
~~~~~~~~~~~~

- Reduce the size of conda package (:pull:`606`) by :user:`bouweandela`
- Add a few unit tests for DiagnosticTask (:pull:`613`) by :user:`bouweandela`
- Make ncl or R tests not fail if package not installed (:pull:`610`) by :user:`valeriupredoi`
- Pin flake8<3.8.0 (:pull:`623`) by :user:`valeriupredoi`
- Log warnings for likely errors in provenance record (:pull:`592`) by :user:`bouweandela`
- Unpin flake8 (:pull:`646`) by :user:`bouweandela`
- More flexible native6 default DRS (:pull:`645`) by :user:`bouweandela`
- Try to use the same python for running diagnostics as for esmvaltool (:pull:`656`) by :user:`bouweandela`
- Fix test for lower python version and add note on lxml (:pull:`659`) by :user:`valeriupredoi`
- Added 1m deep average soil moisture variable (:pull:`664`) by :user:`bascrezee`
- Update docker recipe (:pull:`603`) by :user:`jvegreg`
- Improve command line interface (:pull:`605`) by :user:`jvegreg`
- Remove utils directory (:pull:`697`) by :user:`bouweandela`
- Avoid pytest version that crashes (:pull:`707`) by :user:`bouweandela`
- Options arg in read_config_user_file now optional (:pull:`716`) by :user:`jvegreg`
- Produce a readable warning if ancestors are a string instead of a list. (:pull:`711`) by :user:`katjaweigel`
- Pin Yamale to v2 (:pull:`718`) by :user:`bouweandela`
- Expanded cmor public API (:pull:`714`) by :user:`schlunma`

Fixes for datasets
~~~~~~~~~~~~~~~~~~

- Added various fixes for hybrid height coordinates (:pull:`562`) by :user:`schlunma`
- Extended fix for cl-like variables of CESM2 models (:pull:`604`) by :user:`schlunma`
- Added fix to convert "geopotential" to "geopotential height" for ERA5 (:pull:`640`) by :user:`egalytska`
- Do not fix longitude values if they are too far from valid range (:pull:`636`) by :user:`jvegreg`

Preprocessor
~~~~~~~~~~~~

- Implemented concatenation of cubes with derived coordinates (:pull:`546`) by :user:`schlunma`
- Fix derived variable ctotal calculation depending on project and standard name (:pull:`620`) by :user:`valeriupredoi`
- State of the art FX variables handling without preprocessing (:pull:`557`) by :user:`valeriupredoi`
- Add max, min and std operators to multimodel (:pull:`602`) by :user:`jvegreg`
- Added preprocessor to extract amplitude of cycles (:pull:`597`) by :user:`schlunma`
- Overhaul concatenation and allow for correct concatenation of multiple overlapping datasets (:pull:`615`) by :user:`valeriupredoi`
- Change volume stats to handle and output masked array result (:pull:`618`) by :user:`valeriupredoi`
- Area_weights for cordex in area_statistics (:pull:`631`) by :user:`mwjury`
- Accept cubes as input in multimodel (:pull:`637`) by :user:`sloosvel`
- Make multimodel work correctly with yearly data (:pull:`677`) by :user:`valeriupredoi`
- Optimize time weights in time preprocessor for climate statistics (:pull:`684`) by :user:`valeriupredoi`
- Add percentiles to multi-model stats (:pull:`679`) by :user:`Peter9192`

.. _changelog-v2-0-0b9:

--------

This release includes

Bug fixes
~~~~~~~~~

- Cast dtype float32 to output from zonal and meridional area preprocessors (:pull:`581`) by :user:`valeriupredoi`

Improvements
~~~~~~~~~~~~

- Unpin on Python<3.8 for conda package (run) (:pull:`570`) by :user:`valeriupredoi`
- Update pytest installation marker (:pull:`572`) by :user:`bouweandela`
- Remove vmrh2o (:pull:`573`) by :user:`mattiarighi`
- Restructure documentation (:pull:`575`) by :user:`bouweandela`
- Fix mask in land variables for CCSM4 (:pull:`579`) by :user:`zklaus`
- Fix derive scripts wrt required method (:pull:`585`) by :user:`zklaus`
- Check coordinates do not have repeated standard names (:pull:`558`) by :user:`jvegreg`
- Added derivation script for co2s (:pull:`587`) by :user:`schlunma`
- Adapted custom co2s table to match CMIP6 version (:pull:`588`) by :user:`schlunma`
- Increase version to v2.0.0b9 (:pull:`593`) by :user:`bouweandela`
- Add a method to save citation information (:pull:`402`) by :user:`SarahAlidoost`

For older releases, see the release notes on https://github.com/ESMValGroup/ESMValCore/releases.