What is co2 equivalent of ammonia as greenhouse gas?

Ammonia, as many other gases, contributes to the "greenhouse effect". The mayor gas known to increase global warming through the greenhouse effect is CO2 (carbon dioxide), and to compare the potential of any given gas to the greenhouse effect, an equivalency is often used. This equivalency comes from the fact that a metric ton of CO2 pollutes the environment; so a metric ton of methane contribute to the greenhouse effect as much as 25 metric tons of CO2 would contribute. So, 1 metric ton of ammonia do as much damage to the planet as "CO2 equivalent of ammonia" metric tons of CO2.