Professor Myles Allen:

Past increases in herd size have had a warming impact and future, hypothetical increases in herd size would have a very significant warming impact. I might point out that some of Ireland's trading partners are planning to increase their herds substantially over the next 30 years. This is one reason why Ireland could have a profound geopolitical impact by starting to report warming impact of emissions in its contributions to the UNFCCC system because we absolutely must discourage countries or at least make it clear to them what they are doing if they increase their herds. They are creating huge amounts of unacknowledged warming.