Bonn - The UN's head of climate change Yvo de Boer said Wednesday that talks in Bonn had brought a degree of "clarity and convergence" to the process of drawing up new global climate change commitments by the end of 2009, although the ten-day talks brought few tangible advances.

Industrialised countries were not able to agree on common goals for emission reduction at the talks in the former German capital, which are the first in a series of meetings paving the way to a replacement of the Kyoto Protocol.