CDO

• Changed to C++20
• Add FDB (Fields DataBase) support (status: experimental)
• Remapweights: Use environment variable REMAP_MAP3D=1 to generate all mapfiles of the first 3D field with varying masks
• pack: add support to read pack parameters from file
• select: allow negative numbers for parameter levidx to select level indices from the end

• pressure - pressure on full-levels
• pressure_half - pressure on half-levels
• delta_pressure - pressure difference of half-levels
• gheight_half - geopotential height on half-levels

• after: change computation of geopotential height from full to half levels [Bug #11346]
• expr: var statement failed
• gradsdes: fix integer overflow in map file
• Arith: fill mode for infile2 doesn't work with pipes [Bug #11733]
• rotated pole mapping failed with negative north_pole_grid_longitude attribute [Bug #11661]

New features:

• Add option --shuffle: Specify shuffling of variable data bytes before compression (NetCDF)
• packed NetCDF arrays are stored unpacked for all operators which modify the data
• DCW regions: add support for states (e.g. dcw:USAK for Alaska)
• expr: added function gridindex() (grid cell indices)
• expr: add function cdoy() (day of year) and cdpy() (days per year)

New operators:

• gridcellindex: Get grid cell index from lon/lat point
• timfillmiss: Temporal filling of missing values
• vertfillmiss: Vertical filling of missing values
• Add module Ymoncomp - Multi-year monthly comparison (operators: ymoneq ymonne ymonle ymonlt ymonge ymongt)

Changed operators:

• remapscon: obsolete operator, use remapcon instead
• remapcon2: rename to remapscon2
• gencon2: rename to genscon2

Fixed bugs:

• expr: internal functions with two constant arguments failed in release 2.2.1

• remapping failed in release 2.2.0, if the data contains different masks
• Module Ymonarith: failed with more than one variable in release 2.2.0
• median: add support for missing values
• Ymonstat: set default timestat date to LAST

• Add predefined healpix grid hpz<zoom> to create a healpix with nested index ordering via the zoom level
• remapbil: add healpix support
• selregion: add healpix support
• sellonlatbox: add healpix support
• masklonlatbox: add healpix support
• gh2hl: add support for NextGems3 healpix/zarr data
• gendis: add support for neighbors parameter

• Reading of older remap weight files failed in release 2.2.0
• Module splittime failed in release 2.2.0

• Add support for NumPy percentile methods: midpoint, inverted_cdf, averaged_inverted_cdf, closest_observation, interpolated_inverted_cdf, hazen, weibull, median_unbiased, normal_unbiased
• Add predefined healpix grid hp<nside>[_<order>]
• Add healpix grid support to Zonstat module (zonmean, ...)
• Add compression support for NetCDF4 remap weights file (-f nc4 -z <...>)
• Add support for NetCDF4/HDF5 compression method Zstandard (cdo option -z zstd)
• Add support for NetCDF4/HDF filter (cdo option --filter <filterId,params>)
• Improved read performance of spatial and temporal chunked NetCDF4 data

• hpdegrade: Degrade the resolution of a healpix grid
• hpupgrade: Upgrade the resolution of a healpix grid
• splitdate: Splits a file into dates
• fldcount: Number of non-missing values of the field
• unpack: Unpack packed data

• sethalo: extend user interface (new parameter east/west/south/north and value)

• select: Error prone evaluation of timestepmask
• timpctl: returns missing values when input data is constant in time
• ml2hl: Change level type to ZAXIS_ALTITUDE
• sp2sp: Specification of the parameter fails
• Option -t failed in release 2.1.1
• Yseasstat: vDateTimes not initialized
• intlevel3d: use level indices from target coordinate [Bug #11307]
• Vertstat: wrong result for non monotonic levels in GRIB format [Bug #11323]

• expr: Variable names with a dot followed by digits are not recognized
• Use NetCDF4 data type NC_UINT64 for gridsize > INT_MAX
• fldcor/fldcovar: missval=NaN not supported

• Option --chunksize: Set the chunk size of the horizonal grid
• Option --nsb: Set number of significant bits, used for bit-rounding with NetCDF 4.9.0
• Added support for NCZarr
• zonmean: added support for data on unstructured grids
• expr: replace template _ALL_ for all variable names
• expr: renamed coordinate function cdeltaz(x) to cthickness(x)
• expr: added function clevidx(x)
• expr: added function sinh(x), cosh(x), tanh(x), asinh(x), acosh(x), atanh(x)
• expr: added function mod(x,y), min(x,y), max(x,y), pow(x,y), hypot(x,y), atan2(x,y)
• expr: added function fldrange, fldskew, fldkurt, fldmedian
• expr: added function zonrange, zonskew, zonkurt, zonmedian
• selindexbox: added support for negative indexing to start from the end

• remap<stat> - maps source points to target cells by calculating a statistical value from the source points
• bitrounding: Bit rounding
• selregion: Select horizontal regions
• Dayarith (dayadd, daysub, daymul, daydiv): Daily arithmetic

• cdo 2.0.6 fails to compile with >clang12

• Changed to C++17
• Automatic download of ICON grid files has been disabled, CDO_DOWNLOAD_PATH must be set

• remabil: fix rounding errors on single precision float data [Bug #10809]
• remapeta fails with cdo version 2.0.5 [Bug #10663]
• Magplot: RGB parameter doesn't work
• setcindexbox: failed for rotated_latitude_longitude grids [Bug #10639]
• setgrid Segmentation fault [Bug #10632]

• yseasmean calculates seasonal sum for data with missing values since release 2.0.0 [Bug #10615]
• setattribute: delete attribute failed since release 2.0.0 [Bug #10612]
• atan2: wrong result since release 2.0.0
• Arith: Filling up stream2 by copying the first variable failed since release 2.0.0

• collgrid: process coordinates of generic grids
• read grid description file with x/y bounds failed for GRID_PROJECTION