I want to convert level 1 data captured in 2016 May from sentinel 3 OLCI into level 2 data. The data foot print is related to pacific ocean between HAWAII and North America. I checked EUMETSAT atleast for latest data but there is no any. my question; is there a way to convert level 1 data in 2016 to level 2 data format of sentinel 3 eesa or is there a way to take latest (from 2018) level 2 water data for this area? thank you very much.
Have you also checked codarep?
You can also check the EO Portal of Eumetsat. There you should find old data. You probably need to register separately for this.
On this page all data delivery options of Eumetsat are listed.
https://www.eumetsat.int/website/home/Data/DataDelivery/index.html
Regarding the question if there is processor for generating Level 2.
Not really. It depends on what your are interested in. If you want chl concentration you can use the C2RCC which is part of the processing chain in the ground segment.
But there is no full Level 2 processor available.
as i saw https://codarep.eumetsat.int/#/home contain only SLSTR data. I am searching for OLCI data.
Maybe in the EO Portal.
You can also ask Eumetsat directly:
https://www.eumetsat.int/website/home/ContactUs/index.html#helpdesk
i found some data from https://finder.creodias.eu/www/# but the maximum time line is 2017. is it possible to download data from the cloud sobloo https://sobloo.eu/data/copernicus-core-services/marine-environment-cmems? also i am still waiting for the reply of EUMETSAT. in the mean time i like to try sobloo if it is possible to download.
hi, do you know how to convert radiance data in level-1 product to reflectance?
Hi, I’m not using the @marpet account anymore.
See here: Farewell & Welcome SNAP Community - meta - STEP Forum (esa.int)
Regarding your question, the simplest way is the radiance to reflectance converter.
But probably you want to apply an atmospheric correction.
For data over water you can use the C2RCC processor (included in SNAP) or polymer or you use iCOR.
Thanks for your reply.
I encounter error when apply Optical->Preprocessing->Radiance-to-Reflectance Processor:
"
A problem occurred during the target product initialisation.
Type: OperatorException
Message: Sensor ‘OLCI’ not compliant with input product. Please check your selection
"
Have you already modified the product or maybe only opened a NetCDF file instead of the xfdumanifest.mf file?
The data I opened was .nc file (name: Oa01_radiance.nc) from a decompressed (.rar) file.
The compressed file was downloaded from Sentinel-3 - Sentinel Online.
I couldn’t find this rar file you mentioned, but you better get data from either one of these services
Done. When I opened xfdumanifest.xml in the same dir of nc files. This conversion worked.
Do you know how to remove the effects of differences in illumination geometry (different solar angle, Earth–Sun distance)
