United States, June 11 -- The International Energy Agency (IEA) is developing a scenario for holding global warming below 1.5C that could be included in its influential annual outlook this year.

The agency's World Energy Outlook (WEO) came under fire in an April letter from business leaders, scientists and campaigners for not considering the tougher temperature goal of the Paris Agreement.

Since the letter, the IEA has canvassed outside experts on a new, 1.5C-compatible model. They include Joeri Rogelj, a scientist at Imperial College and lead author on a recent UN report on 1.5C warming.

He said there was "genuine interest" at the IEA and - in his view - the agency "definitely intend" to produce a new scenario.

Rogelj, a signatory of t...