Climate negotiators meet in Bonn on Friday for the first time since the fractious Copenhagen summit but with scant hopes of patching together a new legally binding U.N. deal in 2010.

Delegates from 170 nations gathered on Thursday for the April 9-11 meeting that will seek to rebuild trust after the December summit disappointed many by failing to agree a binding U.N. deal at the climax of two years of talks.

Bonn will decide a programme for meetings in 2010 and air ideas about the non-binding Copenhagen Accord, backed by more than 110 nations including major emitters China, the United States, Russia and India but opposed by some developing states.

The Accord seeks to limit world temperature rises to below 2 degrees Celsius (3.6 F), but without saying how.