Version 0.59.0 (2025/11/07)

Issues Closed

• Issue 3280 - Satpy-based SEVIRI station-pixel extraction workflow
• Issue 3276 - Failure in NinjoGeoTiff writer tests in unstable CI build (PR 3278 by @djhoese)
• Issue 3251 - Error reading F1 band from SLSTR_L1B (PR 3254 by @simonrp84)
• Issue 3232 - Reading AHI L2 Cloud Top Height (PR 3243 by @pdebuyl)
• Issue 3229 - None of the jupiter examples work. 503: Service Unavailable
• Issue 3223 - Himawari imagery - OverflowError
• Issue 3216 - How to properly scale a figure when remapping scene
• Issue 3206 - RGB Workshop 2025 Discussion: SO2 -> Volcanic Emissions (SO2)
• Issue 3204 - applying solar zenith correction to VIS006 loads HRV, blanks the rest of the image
• Issue 3199 - Unit test failures in debian sid. (PR 3233 by @sfinkens)
• Issue 3182 - Wrong satellite altitude units in parallax correction computation and get_satpos docstring (PR 3217 by @ameraner)
• Issue 3136 - Trouble reading Sentinel-2 using msi_safe/msi_safe_l2a
• Issue 3123 - Refactor modules to avoid unnecessary imports
• Issue 3058 - Writing and reading NetCDF file for FCI does not retain fill value
• Issue 3037 - Modify time attributes for EUMETSAT AMV products (PR 3274 by @TristanCantatGaudin)
• Issue 3033 - Documentation on SunZenithCorrector and EffectiveSolarPathlengthCorrector modifiers contradicts itself (PR 3250 by @Nalin7parihar)
• Issue 1062 - Read from remote file system
• Issue 702 - Improve documentation on creating enhancements

In this release 18 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 3278 - Fix ninjogeotiff writer compatibility with newer xarray (3276)
• PR 3255 - Fix NIRReflectance not matching optional inputs against required inputs
• PR 3254 - Bugfix for SLSTR reader to enable support for F1 data in baseline 003 (3251)
• PR 3248 - Fix compatibility with xarray 2025.9.1
• PR 3247 - Fix automatic decompression for Paths in generic_open
• PR 3246 - Fix incorrect file pattern for ABI L2 GFLS files
• PR 3245 - Update B07 from 'ahi_hrit' reader to proper resolutions
• PR 3243 - Add missing cloud_top_height dataset in reader ahi_l2_nc (3232, 3232)
• PR 3233 - Refactor avhrr_l1b_gaclac tests (3199)
• PR 3231 - fix typo in enhancements.rst
• PR 3219 - Replace dask delayed usage for map_blocks in three_d_effect enhancement
• PR 3217 - Fix the parallax correction code for the unit and computation of satellite altitude (3182)
• PR 3213 - Remove sun glint masking in VIIRS EDR NDVI/EVI filtering
• PR 3200 - Remove unnecessary dask task compute check in test utility scheduler
• PR 3198 - Remove old vaisala Gld360 reader python code

Features added

• PR 3274 - add time_parameters attribute containing wind_time to EUMETSAT FCI AMV nc reader (3037)
• PR 3256 - Allow choosing the engine for netcdf-based readers
• PR 3228 - Static geo color stretching
• PR 3220 - Add possibility to override area_def in gerb reader
• PR 3215 - Restrict writers to specific return value types
• PR 3205 - Rename and deprecate various ABI RGB composites toward RGB Workshop 2025
• PR 3181 - Add more Landsat readers

Documentation changes

• PR 3262 - Fix indentation error in area def list
• PR 3250 - Fix inconsistent docstring of correction limit in sunz modifiers (3033)
• PR 3224 - Update references to geoviews Image type
• PR 3218 - Add str as accepted type for resampling destinations
• PR 3208 - Add documentation on avoiding warnings when writing tests
• PR 3146 - Add FAQ entry over image dimensions

Backward incompatible changes

• PR 3236 - Switch MultiScene blend functions to a public satpy.multiscene.blend_funcs module
• PR 3215 - Restrict writers to specific return value types
• PR 3205 - Rename and deprecate various ABI RGB composites toward RGB Workshop 2025

Clean ups

• PR 3255 - Fix NIRReflectance not matching optional inputs against required inputs
• PR 3252 - Fix 'awips_tiled' writer tests producing warnings on some hosts
• PR 3233 - Refactor avhrr_l1b_gaclac tests (3199)
• PR 3219 - Replace dask delayed usage for map_blocks in three_d_effect enhancement
• PR 3198 - Remove old vaisala Gld360 reader python code
• PR 3197 - Refactor AVHRR AAPP to avoid divide by zero warnings
• PR 3196 - Use UPath for generic_open
• PR 3195 - Fix various warnings encountered during tests

In this release 39 pull requests were closed.

Version 0.58.0

Issues Closed

• Issue 3192 - DifferenceCompositor
• Issue 3171 - Add fsspec support to Landsat reader
• Issue 3167 - AlignmentError due to addition of time bounds when calling .to_xarray() on a timeseries blended multiscene (PR 3170 by @sfinkens)
• Issue 3162 - For FCI L1C, calculating the mean of ir_105_time fails with IndexError
• Issue 3158 - reduce_data isn't called for the VIIRS nearest resampler
• Issue 3156 - oli_tirs_l1_tif reader incompatible with xarray: missing rasterio engine support

In this release 6 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 3191 - Use token kwarg in dask map_blocks call instead of name
• PR 3187 - Fix AWIPS tiled writer not being computed properly when compute=False
• PR 3186 - Optimize AWIPS Tiled writer and remove use of dask delayed
• PR 3175 - Use maximum end time from attributes for time bounds
• PR 3172 - Update VIIRS composites to use map_blocks instead of delayed
• PR 3170 - Fix adding time bounds to timeseries (3167, 3167)

Features added

• PR 3177 - Add cloud clear option to ACSPO reader
• PR 3174 - Add ABI L2 SST data quality filtering
• PR 3169 - Add surface type and terrain elevation to the AWS L1b loading
• PR 3155 - Refactor enhancements

Backward incompatible changes

• PR 3177 - Add cloud clear option to ACSPO reader

Refactoring

• PR 3155 - Refactor enhancements

In this release 12 pull requests were closed.

Version 0.57.0 (2025/06/13)

Issues Closed

• Issue 3138 - Possible typo with "Remote Reading" documentation using simplecache configuration (PR 3145 by @djhoese)
• Issue 3131 - Tests fail locally if run with python3.13
• Issue 3117 - Can't compare areas with different projections.
• Issue 3094 - cmsaf_claas2 reader needs an update for claas3 data
• Issue 3073 - missing term to compute reflectance for viirs_compact ?
• Issue 3038 - Support variations of AWS MWR L1C filename (PR 3039 by @TAlonglong)
• Issue 3026 - FCI platform name inconsistent between L1 and L2 (PR 3132 by @TAlonglong)
• Issue 2935 - hrv_clouds analogue for FCI?
• Issue 2906 - Resample HRV channel of Eumetsat image
• Issue 2810 - Issues about fog composites
• Issue 2809 - Read the EUMETSAT Test Data for MTG Using Satpy
• Issue 2756 - Extensive NaN Pixels and Ringed Artifacts After Geostationary Satellite Image Projection
• Issue 2752 - Replacement of deprecated datetime.datetime.utcnow() (PR 3126 by @pjuda)
• Issue 2670 - Add missing EUMeTrain RGBs for SEVIRI and FCI
• Issue 2659 - Tropomi l2 reader ValueError: No supported files found
• Issue 1337 - I'm getting this error when i fire pip install satpy
• Issue 304 - Finalize Sentinel-2 MSI reader

In this release 17 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 3149 - Fix incorrect wavelength for AHI B04
• PR 3140 - Fix satpy.readers import warnings and exception types
• PR 3139 - Add missing metadata to 'ahi_l2_nc' reader
• PR 3135 - Fix more invalid sphinx object references
• PR 3125 - Fix ACSPO reader using binary operations on signed integers
• PR 3120 - Fix invalid documentation references to python objects
• PR 2993 - fix: li missing platform name

Features added

• PR 3134 - Add volcanic_emissions in composites and enhancements fci.yaml
• PR 3129 - Implement FCI "Flames" fire visualisation
• PR 3127 - Refactor reader imports
• PR 3126 - Replace deprecated utcnow (2752)
• PR 3122 - Refactor satpy.writers to separate modules
• PR 3084 - Updated the grid size to read claas3 data
• PR 3039 - Add filename variations to AWS MWR L1C (3038)
• PR 2879 - Initial implementation of EUMETSAT IASI-NG reader

Documentation changes

• PR 3145 - Fix typo in simplecache usage (3138)
• PR 3143 - Add page for specific reader documentation
• PR 3135 - Fix more invalid sphinx object references
• PR 3120 - Fix invalid documentation references to python objects
• PR 3119 - Small Update to MultiScene documentation

Backward incompatible changes

• PR 3127 - Refactor reader imports
• PR 3122 - Refactor satpy.writers to separate modules

Clean ups

• PR 3135 - Fix more invalid sphinx object references
• PR 3132 - Move fci platform name translate to fci base (3026)
• PR 3127 - Refactor reader imports
• PR 3124 - Refactor resampler module to submodules

In this release 26 pull requests were closed.

Version 0.56.0 (2025/04/24)

Issues Closed

• Issue 3108 - Custom composite for reader 'generic_image'
• Issue 3105 - gradient_search and native resampling not working with GOES-18
• Issue 3104 - Replace all blue colors with transparent color
• Issue 3103 - GeoTIFF. Reader 'generic_image'. No supported files found
• Issue 3098 - SEVIRI. Where is built-in composite group_radiance_alpha defined?
• Issue 3095 - Unable to run operations of MTG xarray.Dataset
• Issue 3092 - maskingcompositor assumes the mask to be 2d array (PR 3093 by @TAlonglong)
• Issue 3067 - fci_l1c_nc reader drops channel attribute radiance_unit_conversion_coefficient when more than one file is loaded (PR 3111 by @ClementLaplace)
• Issue 3015 - extrapolation of satellite relative azimuiths? (PR 3017 by @simonrp84)

In this release 9 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 3115 - Fix padding for FCI xx coverage
• PR 3113 - Fix angles tests computing xarray DataArrays instead of dask arrays
• PR 3111 - Fix unit radiance attrs (3067)
• PR 3110 - Improve handling of category products in VIIRS EDR reader
• PR 3093 - Fix 3D masks with size 1 dimension in MaskingCompositor (3092)
• PR 3088 - Deprecate "cira_day_convection" in favor of "convection"
• PR 3017 - Fix SLSTR angle interpolation. (3015)
• PR 3016 - Update scale factor and offset [viirs_l1b]

Features added

• PR 3115 - Fix padding for FCI xx coverage
• PR 3112 - Fci l1c handle other coverage
• PR 3097 - Add SWIR composite to Sentinel-2/MSI.
• PR 3091 - Fix RatioCompositor standard_name handling
• PR 3090 - Add enhancement trace logging and print function
• PR 3089 - Add ABI Day Cloud Type ("cloud_type") RGB
• PR 3087 - Add ABI Blowing Snow RGB
• PR 3080 - Add reader for EarthCARE MSI L1 data
• PR 3040 - Unpin dask
• PR 2891 - Update VIIRS L1b reader to use additional netcdf attributes

Backward incompatible changes

• PR 3088 - Deprecate "cira_day_convection" in favor of "convection"

In this release 19 pull requests were closed.

Version 0.55.0 (2025/03/21)

Issues Closed

• Issue 3079 - FCI - Creating corrected single channel imagery to be used for composite creation OUTSIDE of compositors
• Issue 3075 - SAA & SZA for FCI Level 1NC
• Issue 3066 - NetCDF4FileHandler faults when using obj.dict called when object is a compound variable. (PR 3069 by @mataeui)
• Issue 3062 - abi_l2_nc reader does not support GOES-18 Cloud & Moisture Imagery Multiband mesoscale products from NOAA AWS
• Issue 3053 - No conversion matrix found for platform GOES-19 (PR 3054 by @simonrp84)
• Issue 3052 - Reader for NWC SAF HRW (high resolution winds) data (PR 3070 by @pnuu)
• Issue 3043 - RuntimeError: NetCDF: HDF error OR Segmentation fault
• Issue 3027 - Cannot generate composites on bigger extents using MTG FCI Level-1c files
• Issue 2898 - units attribute is not CF conform for the for AMV datasets in the fci_l2_nc reader (PR 3031 by @YouvaEUMex)
• Issue 2854 - Unexpected floats when reading LI L2 LFL data (PR 2998 by @ClementLaplace)
• Issue 2773 - Resampling with gradient search results in interlacing image artefacts if corner pixels have no data
• Issue 2179 - MergeError in to_xarray_dataset for Scenes containing data from seviri_l1b_nc reader (PR 2827 by @BENR0)

In this release 12 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 3085 - Refactor "compute_relative_azimuth" to be more flexible
• PR 3082 - Add workaround so dask arrays are optimized in Delayed writing
• PR 3074 - Fix plugin tests not completely cleaning up after themselves
• PR 3069 - Prevent call to obj.dict when obj is a compound variable. (3066)
• PR 3063 - add capability for M1 and M2 in MCMIP abi_l2_nc reader
• PR 3057 - Fix LightningTimeCompositor failing when data outside of the time range is passed
• PR 3055 - Update 'oci_l2_bgc' to allow .nc4 and .nc filename extensions
• PR 3048 - Change sensor attribute to lowercase in FCI L2 NetCDF reader
• PR 3046 - Fix MWR Polarisation
• PR 3031 - Fix the handling of AMVs unit to units by applying suggestion in #2898 (2898)
• PR 3028 - add missing dependency for vii_l1b_reader
• PR 2998 - Correct Unexpected floats when reading LI L2 LFL (2854)

Features added

• PR 3070 - Add a reader for NWC SAF GEO HRW data (3052)
• PR 3064 - Add remote reading for hrit seviri
• PR 3059 - Add more datasets to IASI L2 reader
• PR 3054 - Add GOES-19 RGB2XYZ matrix for true_color_reproduction (3053)
• PR 3050 - Add VolcanicAsh product to VIIRS EDR reader
• PR 3044 - Add VIIRS EDR datasets
• PR 3041 - Fix MVIRI tests with unstable dependencies
• PR 3023 - Add reader for CAMEL emissivity datasets.
• PR 3022 - Combine low level moisture with a cloud mask
• PR 3002 - ISCCP-NG level 1g reader
• PR 2998 - Correct Unexpected floats when reading LI L2 LFL (2854)
• PR 2997 - Prepare for channel-specific SEVIRI calibration
• PR 2895 - Add flash age compositor for li instruments
• PR 2827 - Fix to_xarray_dataset merge error with conflicting values in coordinate (2179)
• PR 913 - Modis l2 available datasets

Documentation changes

• PR 3068 - Update sphinx to use new sphinx.ext.apidoc extension
• PR 3065 - Fix slack invite link in contributing docs
• PR 3036 - DOC: Clarify satpy.yaml use with nested dictionaries

Clean ups

• PR 3085 - Refactor "compute_relative_azimuth" to be more flexible
• PR 3081 - Refactor MODIS readers to avoid extra dask tasks
• PR 3068 - Update sphinx to use new sphinx.ext.apidoc extension
• PR 3059 - Add more datasets to IASI L2 reader
• PR 2992 - Fix Pylint complaints for GLD360-reader.

In this release 35 pull requests were closed.

Version 0.54.0 (2025/01/20)

Issues Closed

• Issue 3020 - Re-implement essl_colorized_low_level_moisture using colorize (PR 3021 by @gerritholl)
• Issue 3009 - artefacts in FCI RGBs using 3.8 µm (PR 3013 by @gerritholl)
• Issue 2991 - Resampling MTG FCI high res bands fails when the resample includes bands at different spatial resolutions
• Issue 2981 - Fix the bug with satpy when using numpy 2.x which leads to SEVIRI resampled files having a double size (PR 2983 by @pkhalaj)
• Issue 2979 - Improving resolution when setting extent
• Issue 2977 - CRS data is being printed to title of image
• Issue 2975 - can't create ABI geo_color composite
• Issue 2963 - ahi_hrit reader cannot create a Scene
• Issue 2814 - Reading LI L2 point data is not daskified (PR 2985 by @ClementLaplace)
• Issue 2566 - Wrong version numbers at readthedocs
• Issue 1997 - Resampling from SwathDefinition to AreaDefinition fails with OSError and AssertionError
• Issue 1788 - integration / regression tests that compare images
• Issue 1755 - Store project metadata in pyproject.toml
• Issue 1240 - iber projection lost in the North Pacific

In this release 14 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 3035 - Pin dask to avoid dataframe problem
• PR 3030 - Fix sdist tarball including unnecessary files
• PR 2995 - Add new ABI L2 "CPS" variable name for Cloud Particle Size
• PR 2985 - li2_nc reader daskified (2814)
• PR 2983 - Fix dtype promotion in SEVIRI native reader (2981)
• PR 2976 - Fix dtype promotion in mersi2_l1b reader
• PR 2969 - Fix geos proj parameters for Insat 3d satellites
• PR 2959 - Modified the issue with the calibration coefficient indices for FY-3 satellite data reader

Features added

• PR 3034 - Set issue type in templates
• PR 3021 - Change ESSL colorisation approach (3020)
• PR 3013 - Clip negative FCI radiances (3009)
• PR 3007 - Add t865 dataset to olci l2 list (1767)
• PR 2999 - Add Accsos image comparison tests
• PR 2941 - Refactor MVIRI dataset access
• PR 2565 - Add level-1 readers for the arctic weather satelliter data

Clean ups

• PR 3030 - Fix sdist tarball including unnecessary files
• PR 3014 - Remove xarray-datatree dependency from CI
• PR 3010 - Remove version limit on pytest in CI

In this release 18 pull requests were closed.

Version 0.53.0 (2024/11/08)

Issues Closed

• Issue 2960 - netcdf4 version causes error (PR 2961 by @sfinkens)
• Issue 2952 - Altitude, LandCover, and LandSeaMask are missing in the mersi_ll_l1b reader for FY3E L1B (PR 2953 by @chorng)
• Issue 2948 - "Missing" platform abbreviation causes unexpected error when loading data array in Scene (PR 2949 by @joleenf)

In this release 3 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 2971 - Pin flexparser before it breaks pint
• PR 2970 - Remove rayleigh correction on VIIRS false_color for I02 band
• PR 2968 - Remove unneeded call to private scipy function in SAR reader
• PR 2965 - Fix MODIS readers chunking compatibility with newer dask
• PR 2961 - Fix CF writer crashing with netcdf development version (2960)
• PR 2957 - Bugfix the VIIRS lowres version of the day-microphysics.
• PR 2956 - Fix cira stretch upcasting the data
• PR 2954 - Fix Rayleigh correction to use the same datatype as the input data
• PR 2950 - Fix dtype promotion in SunZenithReduction
• PR 2949 - Add more platforms to VIIRS EDR reader (2948)
• PR 2930 - Fix data type when getting a line offset for a segmented hrit_jma

Features added

• PR 2973 - Remove flexparser pinning
• PR 2953 - Add altitude, landcover, and landseamask to mersi_ll_l1b reader (2952)
• PR 2946 - Update MODIS L1b reader with additional geoinfo datasets

In this release 14 pull requests were closed.

Version 0.52.1 (2024/10/23)

Issues Closed

• Issue 2942 - 0.52.0 breaks seviri_l2_grib-reader with 'EUML2GribFileHandler' object has no attribute '_ssp_lon' (PR 2943 by @strandgren)

In this release 1 issue was closed.

Pull Requests Merged

Bugs fixed

• PR 2944 - Fix tests using palettize
• PR 2943 - Fix seviri_l2_grib end_time property bug. (2942)

In this release 2 pull requests were closed.

Version 0.52.0 (2024/10/18)

Issues Closed

• Issue 2922 - fci_l1c_nc reader ignoring MTG FDHSI segment 41
• Issue 2920 - SEVIRI/FCI Water Vapour channel different normalization?
• Issue 2917 - Unpin mamba version in CI
• Issue 2914 - save.dataset - problem with MTG
• Issue 2909 - RuntimeError while compositing after resampling datasets
• Issue 2907 - The debug run reports an error, but there is no problem running after stopping at the breakpoint
• Issue 2900 - Eliminate dependency on external binaries of PublicDecompWT (xRITDecompress) by using pyPublicDecompWT
• Issue 2897 - generic_image reader returns data as float64 for PNG images
• Issue 2887 - "Don't know how to open the following files" ERROR in MTG-I1 LI data.
• Issue 2884 - MODIS and SEADAS test failures (PR 2886 by @djhoese)
• Issue 2869 - ninjogeotiff writer should write gradient for P mode images (PR 2870 by @gerritholl)
• Issue 2864 - Documentation takes too long to build (PR 2875 by @djhoese)
• Issue 2839 - Help about Netcdf Data
• Issue 1974 - debug_on() could write relevant versions
• Issue 1266 - Can pytroll process MetOp L0 Data?

In this release 15 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 2939 - Fix bogus no_op implementation
• PR 2938 - Update Landsat reader for compatibility with Pyspectral.
• PR 2926 - Import DataTree from xarray
• PR 2923 - Fix data promotion in generic_image reader and satpy.composites.add_bands
• PR 2916 - Fix deprecated "compositor" usage in modifier definitions
• PR 2910 - Remove deprecated usage of pyspectral's download_luts aerosol_type
• PR 2896 - Bugfix for Sentinel-2 radiance calculation
• PR 2886 - Update pyhdf-based arrs to be manually tokenized (2884)

Features added

• PR 2936 - Drop python 3.9 (2741)
• PR 2933 - Add no-op image_ready enhancement
• PR 2931 - Enhance visibility of missing dependencies
• PR 2929 - Replace patched print with capsys fixture
• PR 2927 - Use spline interpolation for faster processing
• PR 2925 - Fix types to allow float32 computations for SAR-C
• PR 2913 - Update check_satpy to use new show_version to display package versions
• PR 2905 - Mcd12q1 draft
• PR 2904 - Add reader for Landsat L1 data
• PR 2902 - Add OCI L2 BGC reader
• PR 2899 - Switch from Mambaforge to Miniforge
• PR 2893 - Fix AAPP L1b reader not to up-cast data to float64
• PR 2870 - Include gradient/axisintercept for mode p (2869)
• PR 2717 - Add combined GRIB reader for both SEVIRI and FCI L2 products

Documentation changes

• PR 2915 - Improve SEVIRI metadata documentation
• PR 2890 - Fixing contributing.rst access on windows systems
• PR 2875 - Make documentation generation faster (2864, 2864)

In this release 25 pull requests were closed.

Version 0.51.0 (2024/08/15)

Issues Closed

• Issue 2881 - seviri_l2_grib-reader support for filename patterns of files coming from EUMETCast-Europe (PR 2882 by @fwfichtner)
• Issue 2877 - NWCSAF GEO images black with numpy 2
• Issue 2872 - nwcsaf-geo reader turns uint8 into int64 on numpy 2.0 (PR 2874 by @gerritholl)
• Issue 2859 - LI L2 Accumulated products retrieved from archive ("ARC" 10-min files) have faulty reading (PR 2867 by @ameraner)
• Issue 2836 - Confusing documentation for creating a Scene without a filename or reader (PR 2868 by @joleenf)

In this release 5 issues were closed.

Pull Requests Merged

Bugs fixed

• PR 2876 - Fix AWIPS tiled writer handling of odd units in VIIRS EDR products
• PR 2874 - Avoid accidental NWCSAF-GEO type promotion (2872)
• PR 2867 - Fix LI L2 reader for accumulated products from archive (2859)
• PR 2866 - Fix FCI L1c reader for African products

Features added

• PR 2882 - support FIRG file-patterns coming from EUMETCast-Europe (2881)
• PR 2867 - Fix LI L2 reader for accumulated products from archive (2859)
• PR 2863 - Adapt the SEVIRI native format reader in Satpy to support remote reading
• PR 2862 - Update thresholds for FCI geo_color low-level cloud layer
• PR 2843 - feat: Enable to read for the Q4 coverage and the IQTI files for the fci l1c data
• PR 1916 - Add Gld360 ualf2 reader

Documentation changes

• PR 2868 - Clarify Scene Documentation without Readers (2836)

In this release 11 pull requests were closed.