Informal ministerial talks on global warming ended Friday with participants determined to maintain the momentum from the U.N. conference in Kyoto and make further efforts to implement the protocol at the upcoming conference in Buenos Aires.

No formal conclusions or detailed plans on how resolve issues unsolved at Kyoto last December were made during the two-day meeting.

But it was meaningful because it brought the ministers together so they could exchange ideas and paved the way for the Fourth Conference of Parties to the United Nations Framework Convention on Climate Change (COP4), Takayuki Kimura, ambassador for global environmental affairs from Japan, said after the two-day talks. "I think it is great progress that participants shared the view that they will keep the momentum from the Kyoto conference," he said.