Ammonia is no greenhouse gas, it has a GWP of zero. Burning ammonia produces N2O, which is a potent greenhouse gas, and NOx, which is an air pollutant. But thes

Ammonia is no greenhouse gas, it has a GWP of zero. Burning ammonia produces N2O, which is a potent greenhouse gas, and NOx, which is an air pollutant. But these can be taken care of by scrubbers, and are irrelevant if you ship ammonia for other uses. (I mean the biggest use case of hydrogen these days is making ammonia for fertilizers.)