The Government and opposition parties should work together to agree a long-term strategy on climate change.
Experts recommend that the UK meets effective and international targets through a linked series of milestones.
The call for action on global warming comes in a report to the All Party Parliamentary Climate Change Group (APPCCG) launched at the Royal Society of Arts in London.
It warns: "It is difficult to see how a genuine consensus could be taken forward without government involvement.
"Accordingly, we recom-mend that the Prime Minister take joint ownership of the cross-party consensus process.
"This could involve convening a cross party climate policy group of MPs and peers informed by the best scientific assessments to agree areas of consensus and seek input from a wide range of stakeholders.
"The Prime Minister should also join with the leaders of the other parties in identifying a senior MP - preferably with both ministerial and consensus experience - to take responsibility for following through on the necessary negotiations."