What is the best/most accepted green correction for AHI
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question
- Dominant language
- Python
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- 1.2k
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- Avg merge
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- Merged PRs (30d)
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Description
Currently in Satpy we have the following equation to create/adjust the green band for the AHI instrument:
new_green = green * 0.85 + nir * 0.15
At the PCW @jsolbrig brought up that the following may be more widely accepted:
new_green = green * 0.93 + nir * 0.07
I needed to make this issue because I've had a FIXME sitting on my local machine but needed to put it out in some place more official.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating Satpy's AHI green-band adjustment and read the surrounding implementation and tests, if present. Compare the two proposed equations with the accepted PCW or instrument-processing reference, then confirm the selected correction against the affected processing behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- data
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100