ACOLITE forum

Hi Quinten,
I am trying to get Rrs from Sentinel 3B Level 1 data with the latest version of AcoLite (v20210802.0). It showed that it cannot open /Gas/Gas_202106F.nc which I downloaded from https://github.com/acolite/acolite_luts/tree/main/Gas/
I also tried to read this .nc data with Matlab ‘ncdisp’ function, but it doesn’t work either.
Could you check it for me? Many thanks!
Guoqiang

Hi Guoqiang

Which platform are you on? Could you share the error you got and the settings you used?

Quinten

Hi Quinten,
I am working on Windows 10 platform.
I’m interested in your QAA-RGB work just published in RSE. It’s really a very nice study. I am trying to get Rrs & ZSD from both Sentinel-2 and -3 Level 1 data using AcoLite.
Now I processed S3, and the attached are screenshots.
Thanks!
Guoqiang

Hi Guoqiang

I presume the Gas_202106F.nc file is in your ACOLITE data/LUT/Gas directory? The LUTs should be retrieved automatically, but perhaps the error 51 indicates that there is a network connection issue, and that LUTs cannot be downloaded from the GitHub repo. Can you check the file size/checksum of the Gas LUT? (~31.3MB, md5: a5ac6937a9fcd124368536529ba34884)

Quinten

Yes, at the beginning, I expected AcoLite can download Gas_202106F.nc file automatically, but it did not work at all, as shown in the screenshot. I am not sure it's a network problem. then I tried to download it from 'https://raw.githubusercontent.com/..../ ... 202106F.nc' manually. And the download file is only 128 K !
If it is due to network, I will try again in a new network environment.
Thanks!
Guoqiang