pytroll/satpy

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Python package for earth-observing satellite data processing

Stars: 1.2k
Forks: 335
Open beginner issues: 2
Indexed issues: 444
Avg merge: 1d 18h
Merged PRs (30d): 10

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue hacktoberfest

Beginner friendly Everything

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444 open issues indexed

Reading any real GCOM-C/SGLI L1B granule fails with numpy >= 2.4 Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

pytroll/satpy#3470 · 1 comment · Opened Sep 16, 2026
Scene.resample() returns all-NaN for AHI-HSD B14 data, while direct Pyresample succeeds Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

pytroll/satpy#3468 · 1 comment · Opened Sep 13, 2026
PPS cloud water path composites fall through to the default enhancement Open

bug component:compositors

pytroll/satpy#3457 · 1 comment · 2 assignees · Opened Sep 4, 2026
unzip_file() silently ignores pathlib.Path inputs, breaking bz2 support for readers when filenames are Path objects Open

bug component:readers

pytroll/satpy#3456 · 1 assignee · Opened Sep 2, 2026
Suggested modifications to and/or extensions of the ir_sandwich and colorized_ir_clouds composites Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

pytroll/satpy#3440 · 3 comments · 2 reactions · Opened Aug 11, 2026
[IDEA] Compositing ir_sanwdich with geo_color Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

pytroll/satpy#3431 · 7 comments · Opened Jul 24, 2026
goes-imager_nc fails to read GOES 13 netcdf data Open

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

pytroll/satpy#3430 · Opened Jul 21, 2026
Change default behaviour of SunZenithCorrector/sunz_corrected Open

cleanup component:compositors component:modifiers

pytroll/satpy#3412 · 1 assignee · Opened Jun 3, 2026
Add `unnormalized_reflectance` to VIIRS SDR (`viirs_sdr`) reader Open

component:modifiers component:readers enhancement

pytroll/satpy#3411 · 4 comments · 3 assignees · Opened Jun 2, 2026
gradient_search not working correctly with MSG RSS data in native format for `euro4` area (and others) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

pytroll/satpy#3403 · 1 comment · Opened May 22, 2026
Fails resampling MODIS level-1 using an omerc projection definition Open

help wanted PCW

Difficulty 4/5 3-5 days Newbie friendliness 52/100

pytroll/satpy#3391 · 11 comments · Opened May 11, 2026
Is it possible to make CREFL more general for other sensors? Open

component:compositors enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

pytroll/satpy#3374 · 2 comments · Opened Apr 10, 2026
Map crop Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

pytroll/satpy#3362 · 2 comments · Opened Mar 31, 2026
Remove automatic pixel_quality reading as ancillary variable in FCI L1c reader Open

backwards-incompatibility component:readers optimization

Difficulty 4/5 3-5 days Newbie friendliness 48/100

pytroll/satpy#3357 · 3 comments · 1 reaction · Opened Mar 24, 2026
ancillary variables loaded at higher resolution than channel data Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

pytroll/satpy#3356 · 2 comments · Opened Mar 24, 2026
drop_coordinates behaviour contradicts documentation Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

pytroll/satpy#3353 · 2 comments · Opened Mar 20, 2026
Reproduce geo/true_color from CIRA (green channel simulation)? Open

question

pytroll/satpy#3352 · 7 comments · 1 assignee · Opened Mar 19, 2026
Unable to pip install satpy[all]: No extra named 'all' Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

pytroll/satpy#3351 · 5 comments · Opened Mar 18, 2026
Add a reader for LSA SAF FRP Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

pytroll/satpy#3350 · 1 reaction · Opened Mar 17, 2026
FCI L1C reader overwrites units attribute on time metadata, making the data hard to interpret Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

pytroll/satpy#3349 · 3 comments · 1 reaction · Opened Mar 10, 2026
Point overays Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

pytroll/satpy#3341 · 5 comments · Opened Feb 21, 2026
Nearest / KDTree resampling fails if `numcodecs>=0.16` Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

pytroll/satpy#3340 · 2 comments · Opened Feb 18, 2026
FCI L2 reader returns categorical data as float Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

pytroll/satpy#3338 · 9 comments · Opened Feb 13, 2026
CF writer omits coordinate variable attributes if coordinates not named y, x Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

pytroll/satpy#3326 · 4 comments · Opened Jan 9, 2026
Reader cmsaf-claas2_l2_nc does it work for ClASS 3 products Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

pytroll/satpy#3316 · 3 comments · Opened Dec 11, 2025
Scene creation fails for too large number of files due to maximum recursion depth exceeded error Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

pytroll/satpy#3297 · 6 comments · Opened Nov 13, 2025
Check that all examples and snippets still work with satpy v1.0 Open

component:examples documentation

Difficulty 4/5 Over a week Newbie friendliness 35/100

pytroll/satpy#3288 · Opened Nov 10, 2025
Error when using delayed writing using one area but several (writers) formats Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

pytroll/satpy#3285 · 53 comments · Opened Nov 9, 2025
Clarify status of gradient search resampler with nearest neighbour method Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

pytroll/satpy#3275 · Opened Oct 27, 2025
Introduce `oblique_reflectance` calibration Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

pytroll/satpy#3272 · 5 comments · Opened Oct 22, 2025
Introduce the newly chosen standard name Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

pytroll/satpy#3271 · 7 comments · Opened Oct 22, 2025
Write a migration guide to Satpy 1.0 Open

documentation enhancement

pytroll/satpy#3270 · 1 assignee · Opened Oct 22, 2025
Comply to WMO RGB guidelines Open

component:compositors enhancement

pytroll/satpy#3269 · 6 comments · 1 assignee · Opened Oct 22, 2025
early compute in Filler and co if coordinates are daskified Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

pytroll/satpy#3265 · 3 comments · Opened Oct 20, 2025
Unable to install Satpy on Raspberry Pi Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

pytroll/satpy#3264 · 11 comments · Opened Oct 18, 2025
fci_l1c_nc reader can't properly release file handle after reading under Windows Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

pytroll/satpy#3263 · 2 comments · Opened Oct 17, 2025
slow test in `TestParallaxCorrectionSceneLoad` due to network access Open

component:tests

pytroll/satpy#3261 · 2 comments · 1 assignee · Opened Oct 13, 2025
Standard name and calibration are wrong when applying the nir_reflectance modifier Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

pytroll/satpy#3258 · 5 comments · Opened Oct 9, 2025
Calibration levels naming Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytroll/satpy#3257 · 10 comments · Opened Oct 9, 2025
Error reading F1 band from SLSTR_L1B Open

question

pytroll/satpy#3251 · 8 comments · 1 assignee · Opened Oct 6, 2025
create a stratiform/convective mask Open

component:compositors question

pytroll/satpy#3249 · 3 comments · 1 assignee · Opened Oct 4, 2025
Can the true_color composite method used by satpy for Himawari HSD data be applied to Himawari L1 data to generate output consistent with the HSD true_color composite? Open

question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

pytroll/satpy#3242 · 4 comments · Opened Sep 26, 2025
Spectral Band Adjustment Factor (SBAF) feature Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

pytroll/satpy#3240 · 8 comments · Opened Sep 25, 2025
Loading an image with generic_image, then writing with geotiff, changes the image Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

pytroll/satpy#3239 · 2 comments · Opened Sep 18, 2025
Add default enhancement for brightness temperature and possibly other common names Open

backwards-incompatibility

Difficulty 5/5 Over a week Newbie friendliness 42/100

pytroll/satpy#3238 · 5 comments · Opened Sep 18, 2025
Request: Access to the `dataset_info` from `get_area_def` in a reader Open

component:readers enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

pytroll/satpy#3235 · 1 comment · 1 reaction · Opened Sep 16, 2025
Reading ahi_l2_nc in s3 Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

pytroll/satpy#3234 · 7 comments · Opened Sep 15, 2025
Add enhacement key for defining composite enhancement Open

component:compositors component:enhancements enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

pytroll/satpy#3230 · 2 comments · Opened Sep 8, 2025
Cleanup of enhancements for composites using `DayNightCompositor` is needed Open

cleanup component:compositors component:enhancements

Difficulty 3/5 1-2 days Newbie friendliness 45/100

pytroll/satpy#3227 · 10 comments · Opened Sep 5, 2025
Loss of UTM zone / CRS metadata when merging multiple Landsat-8 scenes Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

pytroll/satpy#3214 · 3 comments · Opened Aug 23, 2025

pytroll/satpy

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