Hello Quinten,
as I am not very confirm with spectral bands, could you probably explain:
Is the new "red/NIR atmospheric correction" the same then the old "NIR atmospheric correction"?
When would one apply the NIR/SWIR atmospheric correction?
I am studying the Po river prodelta, which is known to be of of medium to higher turbid water and used the SWIR correction before. I was wondering, if the new settings could improve the results. When applying I got a lot of values "1"
Thank you, Anne
red/NIR, NIR/SWIR, SWIR atmospheric correction for turbid river
-
annetrampe
- Posts: 8
- Joined: Sun May 07, 2017 2:25 pm
Re: ACOLITE 20170718.0
Hi Anne
The red/NIR is indeed the atmospheric correction previously labeled "NIR". In most cases red/NIR or SWIR/SWIR combinations should be sufficient, but the NIR/SWIR combinations were requested by a user. Note that in SeaDAS/l2gen the NIR/SWIR combination is used by default for Landsat. The NIR/SWIR pixel per pixel approach would however not work in turbid waters with non-zero NIR RHOW.
The SWIR correction should work fine for the Po river - could you provide an example of a scene where you retrieve values =1. (Is this in reflectance?)
Quinten
The red/NIR is indeed the atmospheric correction previously labeled "NIR". In most cases red/NIR or SWIR/SWIR combinations should be sufficient, but the NIR/SWIR combinations were requested by a user. Note that in SeaDAS/l2gen the NIR/SWIR combination is used by default for Landsat. The NIR/SWIR pixel per pixel approach would however not work in turbid waters with non-zero NIR RHOW.
The SWIR correction should work fine for the Po river - could you provide an example of a scene where you retrieve values =1. (Is this in reflectance?)
Quinten