This **advanced** to **expert** level short course will focus on recent changes to data access for Sentinel-3 Ocean and Land Colour Instrument (OLCI) products, and introduce new tools and approaches for performing ocean colour match-up analyses. The event will:
– present the available operational and reprocessed OLCI products through the EUMETSAT Data Store
– detail web-based (GUI) and automated (API) methods to search for and retrieve these products
– introduce the **ThoMaS** (**T**ool to generate **Ma**tchups of OC products with **S**entinel-3/OLCI) toolkit for automating OLCI ocean colour data acquisition and match-up analysis
– demonstrate the use of the tool using multiple example use cases.
The course will consist of a 2-hour webinar on March 29th (11:00 – 13:00 UTC), which will include a Q&A and feedback session. To support participants in using the ThoMaS toolkit, we will keep the online Q&A platform open for one week following the webinar, responding quickly to any queries posted. We will close the Q&A portion of the course with a second live feedback session on April 5th (11:00 – 13:00 UTC), giving those interested a chance to share their experiences using the tool, make recommendations for improvements or seek more advanced guidance on their specific workflows.
**Optional preparatory steps:**
There are no prerequisites for this course, but if you intend to use the EUMETSAT Data Store and/or the ThoMaS toolkit, you will require the following;
– Searching for products in the EUMETSAT Data Store does not require authentication. However, in order to download products you will require a EUMETSAT Earth Observation Portal account. You can apply for one via https://eoportal.eumetsat.int/userMgmt/register.faces.
– The ThoMaS toolkit is **now available** via the EUMETSAT Gitlab account (https://gitlab.eumetsat.int/eumetlab/oceans/ocean-science-studies/ThoMaS). We encourage you to check the **README** for more information on using it.
– The ThoMaS match-up routines require ancillary atmospheric data that is retrieved from ECMWF using their *cdsapi*. In order to use this, you will require accounts to use the CDS (https://cds.climate.copernicus.eu/api-how-to) and ADS (https://ads.atmosphere.copernicus.eu/api-how-to) services.
For more information, please see the link on the right hand side of the page. We look forward to seeing you at the course.