how to impose alkalinity surface flux

[isoares]

Dear ROMS Ecosystem users,

I am using the FENNEL bio model with CARBON and DENITRIFICATION

#define BIO_FENNEL
#ifdef BIO_FENNEL
# define CARBON
# define DENITRIFICATION
# define BIO_SEDIMENT
# define DIAGNOSTICS_BIO
#endif

and I would like to impose a surface flux of alkalinity

Does anybody know how to do that ? the surface flux of alkalinity.

I searched the forum and I didn't find any discussion addressing this topic.

Thank you

Ivan