First I used BSRN Toolbox to extract lwdn (surface downward longwave radiation) and lwup (surface upward longwave radiation) from raw data files, and saved the data in ascii format, then I calculated surface net longwave radation using lwdn and lwup, and organized all site data together for each month and year and saved them in netcdf files.
Temporal resolution:
monthly
General information:
This product was derived from WRMC-BSRN radiation dataset.