The Photolysis code

Warnings: If you like to switch off clouds, set partial cloudiness to zero (aclc), just nullifying cloud liquid water content is not sufficient.

Use with mecca or mecca1: adjust in &CPL of mecca.nml or mecca1.nml the setting for jval_stream:

=’photo’ if the module photo=’jval_gp’ if the module jval

is selected.

The code has my approval up to now only for use with ECHAM5, other options like BOX are preliminary and not checked (RED LIGHT!, check with R. Sander)