Dear Subir

I downloaded and installed sen2core version 02.05.05 stand alone for windows 10 64 bit.

I am using Sen2Cor standalone tool for Atmospheric correction of Sentinel2 L1C product.

using of Sen2Cor standalone is very easy.

I have any problem using it.

If you are using windows 64 bit i recommend you to use standalone Sen2Cor version.

Sen2Cor installation packages are provided as standalone installers. For a short introduction of how to install the standalone version of Sen2Cor, read the installation steps described in section 4 of the release note S2-PDGS-MPC-L2A-SRN-V2.5.5.pdf

http://step.esa.int/main/third-party-plugins-2/sen2cor/

Best Regurads,

Dear Mostafa,

Thank you so much for your response.

I will try to install the Sen2Cor standalone!

But my another concern is how to do the atm. correction using this standalone version (whereas use of SNAP 6.0 is very straight-forward)! I am not getting any manual regarding this, if you have any documents about the steps of atm. corr., can you please share!

Dear Subir,

Step1:

download and install the Python software from following address:

https://www.python.org/downloads/windows/

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Step2:

after the Python is installed

download Sen2Core 2.5.5 from following address:

http://step.esa.int/thirdparties/sen2cor/2.5.5/Sen2Cor-02.05.05-win64.zip

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Step3:

Extract Sen2Cor-02.05.05-win64.zip to the root drive c:\

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Step4:

download your desired sentinel2 images and unzip it

after the sentinel2 image is extracted you will have a directory name that is terminated with SAFE

you will need full SAFE directory name for next stage

for example it is like following:

F:\Bostan97\S2B_MSIL1C_20180612T071619_N0206_R006_T39SVV_20180612T092839.SAFE

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Step5:

Create text file and write following scripts into it:

==========================

cd\

cd Sen2Cor-02.05.05-win64

L2A_Process --resolution 20 F:\Bostan97\2018\S2B_MSIL1C_20180622T071619_N0206_R006_T39SVV_20180622T092754.SAFE

========================

save it with L2AProcess.bat name

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Step5:

Right Click on L2AProcess.bat and select Run as administrator.

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Step 6:

please wait to atmospheric correction is fiinished.

in my system it late about 45 minutes

for other images only edit L2AProcess.bat file , run it

Best Regurds,

Thank you so much for your detailed description about Sen2Cor installation and atmospheric correction of Sentinel 2 images.

Just to inform you, My issues with SNAP is also solved.

Mr. Andreas Braun from STEP Forum helped me to solve that issue. Here is the solution:

Instead of renaming the data folder, you should move it to a directory with lesser subfolders, e.g.

C:\temp\S2A_MSIL1C_20170208T092131_N0204_R093_T33PWQ_20170208T093135.SAFE

The folder name after extraction should remain as it is.

It's working now with SNAP also.

Anyway, Thanks once again for your response.

dear Mostafa,

Should the method you mentioned for producing sentinel 2 L2A products work for 2017 data too?

I have used the method for 2018 data and it worked well but it makes following error (the attached file) for 2017 data.

concerning above problem, I removed --resolution term in the script and the process worked :)

I changed step 5 of Mostafa's answer as:

cd\

cd Sen2Cor-02.05.05-win64

L2A_Process F:\Bostan97\2018\S2B_MSIL1C_20180622T071619_N0206_R006_T39SVV_20180622T092754.SAFE

Dear manizheh

In some images the --resolution 10 doesn't work.

When you deleted --resolution parameter it work at default resolution parameter i.e 20m.

At this mode you will not see infrared band8 and you will have to use band8A instead of.

Please tell me:

Did you find Band8 in l2A corrected folder?

Thanks regard

Dear Mostafa

I did all of steps that you saied( ….I wrote --resolution 10.... )

but I havnt band 8 in my output.

do you have any idea?

Subir Paul Sir , I have been facing the same problem of Atmospheric Correction of Sentinel 2 data using SNAP 6.0 (sen2cor plugin)

The error I am getting is : L1C user product directory must match the following mask: S2?_MSIL1C*.SAFE

but is: L1C_T43REQ_A017877_20181124T054136

Finished tool execution in 0 seconds

Please help me out. I will be very thankful to you.

Dear Sagar Taneja

Did you checked the discussions (all the comments) of this question? If you follow these steps precisely your problem should be solved!

My problem was resolved by following the steps which I answered on June 28, 2018 in this discussion.

Hopefully this will resolve your issue!

Dear Mostafa,

I am not able to find the output folder after running the algorithm.

Mostafa Khosravirad

Asim

Dear Muhammad

Based on the before statement. the output folder is beside the input folder.

I suppose you that you make a .bat file like mine( L2A - AfterEdit-Run me.bat)

--Content of my bat file---

C:

cd\

cd Sen2Cor-02.05.05-win64

L2A_Process --resolution 20 D:\Bostan98\S2B_MSIL1C_20190428T071629_N0207_R006_T39SVV_20190428T101325.SAFE

----------------------------------

yo can change the path of D:\Bostan98\ to real path for Sen2Cor software in your computer.

Then you can execute bat file and then wait to sen2cor correct your image

Mostafa Khosravirad thanks alot..

dear Subir Paul ,

i did the atmospheric correction with sen2cor and after i wanted to open it on envi but when i opened there it says that it´s georeferenced (i thought maybe because it´s in jpg) so i went back to snap to convert them from jpg to tiff (using the convert tool) but SNAP didnt want to open band 8 and 4.

do you have any idea about that?

Dear Sarra Hihi ,

When I was doing atmospheric correction, I was getting 9 corrected bands (Band 2, 3, 4, 5, 6, 7, 8A, 11 and 12). I converted these images to Geotiff format for further application.

So, I also didn't have the Band 8 but Band 4 image was there.

thank you for your answer

i just decided to work on ArcGIS to avoid converting the image.

Hello Everyone.

I'm new into Sentinel 2 images and SNAP.

I just download the app and installed.

In the cmd

L2A_Process.bat --resolution 10 C:\Users\cfernan2\Desktop\L1C_T18HYD_A013993_20191110T144457\S2B_MSIL1C_20191110T143729_N0208_R096_T18HYD_20191110T180023.SAFE

This works fine because I get:

Sentinel-2 Level 2A Processor (Sen2Cor). Version: 2.8.0, created: 2019.02.20, supporting Level-1C product version 14.2 - 14.5 started ...

Once is finished I get this message: Progress[%]: 100.00 : Application terminated successfully.

However, when importing the images from the folders R10, R20 and R60 into SNAP it can't read bands in 10 or 20 mts resolution. Only those in 60 mts.

What could be the problem??