Earthdata Forum

When I used l2gen to process a sentinel-2A MSI, "msis2a_gas_transmittance.nc" is found to be missing. Details are as follows:

l2gen was called as:

l2gen ifile=/mnt/c/Users/hry/Desktop/Test/S2A_MSIL1C_20210726T030551_N0301_R075_T49QBD_20210726T054313/S2A_MSIL1C_20210726T030551_N0301_R075_T49QBD_20210726T054313.SAFE/manifest.safe ofile=/mnt/c/Users/hry/Desktop/Test/S2AATM/test.nc

The error is as follows:

-E- /root/ocssw/ocssw_src/src/l2gen/gas_trans.c: Failed to open /root/ocssw/share/msi/s2a/msis2a_gas_transmittance.nc

What tag of OCSSW are you using? You can type or to find out

Thank you for your reply. I install the ocssw by using "install_ocssw --install_dir=$SEADAS_HOME/ocssw --tag R2022.5 --msis2a --msis2b". But when I type "l2gen --version", it was shown that "msl12 9.6.0-R2022.4 (Apr 7 2022 14:56:53)".

I replicated the error with R2022.5. We'll look into the issue.

On the other side, I did with V2022.0 with no problems.

MSI does not work with the "R" tags or any "T" tag > T2022.13
I would suggest you use the standard tag for MSI (V2022.0)
We will look into updating the MSI processing.

don

Thank you very much for your reply! I will try it!