The Jakarta Post ,  Copenhagen
The world should aim to halve greenhouse gas emissions by 2050 from 1990 levels, according to a new draft text from a UN climate summit that makes concessions to developing nations and small island states.
""We agree that deep cuts in global emissions are required...with a view to reduce global emissions by 50 percent by 2050 below 1990 levels,"" it said, Reuters reported.
The expected new global climate deal was still a draft as this went to print amid a ""roller coaster of emotions"" among delegates, in the words of a frustrated delegate quoted by the Associated Press.
The new draft dropped a reference to an end-2010 deadline for reaching a legally binding treaty that had been in a previous text on Friday.
The target was new compared to previous drafts at a summit of 120 leaders on Friday.
The draft said that a rise in world temperatures should be limited to 20 Celsius over pre-industrial times, with a review in 2016 that would also consider a tougher limit of 1.50 Celsius.
About 100 nations including small island states and least developed nations want to limit world temperature rises to 1.50 Celsius.
Earlier Indonesia had urged developed countries to cut their emissions by an ""ambitious"" 40 percent target by 2020.
""Indonesia believes this commitment should be around 40 percent, as required by the IPCC (Intergovernmental Panel on Climate Change) ... this is a burden and responsibility that cannot be shifted and deferred,"" President Susilo Bambang Yudhoyono had said Thursday in his speech.
Reaching an agreement between the United States and China, considered responsible for half the world's harmful emissions, has been among the major obstacles, with President Barack Obama urging a mechanism to monitor implementation of the climate deal to China's annoyance.
He later even invited China's Premier Wen Jiabao to another bilateral meeting to overcome their differences.
Wen had said that developed nations should be understanding of the level of poverty in developing countries and not demand drastic emission cuts which could harm their economies.
""We still have 150 million people living below the poverty line, and we therefore face the arduous task of developing the economy. ..""
Obama had said, ""We are ready to get this done today,"" he said.
""But there has to be movement on all sides.""
Wen had told delegates that China's voluntary targets of reducing its carbon intensity by 40 to 45 percent will require ""tremendous efforts.""
The new draft also introduced a name for the proposed agreement - the ""Copenhagen Accord"".
The three-page document, which would not be binding in international law, dropped a final paragraph in a previous draft that had said that negotiations on a full, legally binding treaty would have to be completed by the end of 2010.
The text stuck to previous goals, including one of limiting world temperature rises to a maximum rise of 2 Celsius above pre-industrial times to avert impacts such as floods, heatwaves, species extinctions and rising ocean levels.
""We shall, recognizing the scientific view that the increase in global temperature should be below 2 degrees and in the context of sustainable development, enhance our long-term cooperative action to combat climate change,"" it said.
World leaders are in Copenhagen seeking to bridge differences over the deal meant to chart a path towards a greener future less dependent on fossil fuels.
The draft still left blank key elements such as the depth of cuts in greenhouse gas emissions expected of developed nations by 2020.