Brussels EU nations are dithering over how to fill a multi-billion-euro fund to help tackle climate change, just as the region's executive body hosts talks with countries likely to bear the brunt of extreme weather.

The European Union recommitted to providing ¤7.2 billion euros for the fund over 2010-12, according to draft conclusions seen by Reuters ahead of a meeting of EU finance ministers next week.

But after that, how much cash will flow is unclear as the text — drafted against the backdrop of acute economic crisis in the euro zone — only states the need to "scale up climate finance from 2013 to 2020" without specifying how.

The Green Climate Fund aims to channel up to $100 billion globally per year by 2020 to help developing countries deal with the impact of climate change.

Design

Its design was agreed at international climate talks in Durban last year.

Europe's Climate Commissioner Connie Hedegaard is fighting to build on Durban's fragile agreement to keep alive the United Nations process on tackling climate change. Yesterday and today, she will hold informal discussions in Brussels with members of what some call the "coalition of ambition", ahead of UN talks in Bonn later this month.

The coalition is a union of the EU, the Alliance of Small Island States and the Least Developed Countries, which at the UN talks in Durban played a lead role in forging agreement on keeping alive the Kyoto process to address global warming.

"I have invited to Brussels a group of 30 ambitious countries, represented by their ministers, to discuss how we can keep up this momentum and continue to achieve results together," Hedegaard said in a statement.

Oxfam said "intransigence" from some EU member states was putting the coalition at risk as they are arguing against firm commitments to finance after 2012.

"At a critical moment in the fight against climate change, Europe looks to be sitting back rather than stepping up," Lies Craeynest, Oxfam's EU climate change expert, said.

Debate has also focused on how much of the EU's $30 billion share of the $100 billion should come from the private sector, which would reduce the need for public funds.

The draft conclusions ahead of the May 15 EU ministerial meeting noted "further efforts are required to clarify the concept of private financing and its contribution to the $100 billion".

Some money could come from levies on shipping and aviation, although these sources are contentious. Since January, all airlines using EU airports have been required to offset their carbon emissions using the EU's Emissions Trading Scheme.