Add option to clip negative ABI radiances

[ghiggi]

In this PR, we aim to provide satpy the ability to clip negative radiances (i.e of ABI)

• Closes #xxxx
• Tests added
• Fully documented
• Add your name to AUTHORS.md if not there already

Related to:

• Consider adding option to ABI L1b reader for lower clipping radiances ssec/polar2grid#499

[ghiggi]

@simonrp84 cc

[coveralls]

Pull Request Test Coverage Report for Build 5346533956

• 66 of 66 (100.0%) changed or added relevant lines in 2 files are covered.
• 100 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+0.01%) to 95.425%

---

Files with Coverage Reduction	New Missed Lines	%
satpy/composites/init.py	6	91.24%
satpy/readers/avhrr_l1b_gaclac.py	6	95.68%
satpy/readers/olci_nc.py	11	94.2%
satpy/readers/geocat.py	18	88.82%
satpy/readers/seviri_l1b_native.py	21	86.82%
satpy/readers/nwcsaf_nc.py	38	82.0%

Totals
Change from base Build 5141473420:	0.01%
Covered Lines:	47247
Relevant Lines:	49512

---

💛 - Coveralls

[codecov]

Codecov Report

Merging #2499 (4d2b9d3) into main (1f97c0b) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #2499      +/-   ##
==========================================
+ Coverage   94.84%   94.85%   +0.01%     
==========================================
  Files         337      337              
  Lines       49571    49689     +118     
==========================================
+ Hits        47016    47134     +118     
  Misses       2555     2555              

Flag	Coverage Δ
behaviourtests	4.41% <0.00%> (-0.01%)	⬇️
unittests	95.47% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
satpy/_config.py	91.57% <ø> (ø)
satpy/readers/abi_l1b.py	98.90% <100.00%> (+0.25%)	⬆️
satpy/tests/reader_tests/test_abi_l1b.py	99.38% <100.00%> (+0.13%)	⬆️

... and 10 files with indirect coverage changes

[ghiggi]

Everythings seems ready for a final review ;)

[djhoese]

Oh I just realized the configuration documentation should probably be updated too.

[djhoese]

I think I'm good with this. Thanks for getting this done. @ghiggi have you tested it it for your use case and does it work as expected? @simonrp84 any other concerns?

[ghiggi]

@mraspaud milestone v0.43.0

[mraspaud]

Looks great, just some minor comments inline

[simonrp84]

A single suggestion from me, otherwise looks OK.

Out of interest, does GOES-ABI suffer a similar problem at the top end? I know SEVIRI has issues with large radiance out-of-range for the big depth of the sensor (which normally roll back so they look like low radiances) and I'm curious if ABI has the same

[mraspaud]

LGTM