Remove clouds from Sentinel-2 imagery (Level 2A) using ESA SNAP?

As a start, the ESA web site has extensive tutorials: https://step.esa.int/main/doc/tutorials/ like https://www.youtube.com/watch?v=G7-YfrLrfjA

Keep in mind it can be a fairly involved process with lots of details and sometimes many steps. And remember clouds usually have shadow, which may matter depending on your application.

Aahed Alhamamy

Thakshila D. Gunawansha

The best source for getting started with removing clouds from Sentinel-2 imagery using ESA SNAP is the ESA SNAP tutorial page.

This page contains video tutorials, as well as written tutorials and example workflows, to help you get started with cloud masking using ESA SNAP.

The video tutorial titled “Sentinel-2 Cloud Masking” is a great place to start. This video covers the basics of cloud masking using the Sentinel-2 Level-2A product, including how to apply the S2 Cloudless product and the S2 Cloud Probability product to generate a cloud mask.

The written tutorials and example workflows on the ESA SNAP tutorial page can also be very helpful for understanding the cloud masking process and for getting the most out of ESA SNAP.

Finally, the ESA SNAP User Forum is a great resource for getting answers to any questions you may have about using ESA SNAP for cloud masking.

I hope this information is helpful.

Good luck with your project!

Ahmad Jauhari

Image Opening: Firstly, you need to open the Sentinel-2 image in ESA SNAP. This can be done by clicking on File > Open Product and selecting the appropriate image file.

Band Selection: Sentinel-2 images come with various bands, and you need to select the right band for the cloud removal process. Typically, band 10 is used for cloud detection as it encompasses a wavelength spectrum region highly sensitive to clouds.

Cloud Removal Process: After selecting the right band, you can proceed to the cloud removal process. In ESA SNAP, the tool for this is 'Cloud Mask' located under the menu 'Optical > Pre-Processing > Masking > Cloud Mask'. Upon selecting this tool, you will be prompted to set some parameters. You can adjust these parameters according to your needs.

Image Export: After the cloud removal process is complete, you can export the processed image. This can be done by clicking 'File > Export > GeoTIFF'. Ensure you select the 'Export Entire Product' option to ensure all data is output.

Based on Chatgpt

Where to find data on trees in tropical agroforestry?

In frequency domain alpha band(8-16hz), beta band(16-32hz), gamma band(32-64hz), sub-band(64-128hz) are same as LL,LH,HL,HH in wavelet decomposition?

Are cloud points able to identify tree species?

Can you please suggest me how to convert EDF file into Mat file for EEG datasets?

Does anybody know a public dataset of drop landing or jump landing maneuvers?

Are the hyperspectral image datasets which are publicly available at ehu.eus website atmospherically and geometrically correct?

Which satellite image gives best results for Land Use land cover classification(specifically for built up regions) for Indian region ?

Do there exist stand-alone permanently in-ground soil-moisture sensors with an installed GSM module, for outdoor use?

Identical spectra for L- and D-peptides after they self-assemble?

Hye All, Greetings, How can i get surface run off water data?