Remaining uncertainty

Remaining uncertainty

No single study represents the final word on what’s happening with carbon emissions. And the team acknowledges that more work needs to be done to cope with uncertainties. One key issue involves divvying up the uptake and release ofCO2 among the various natural sources and « sinks. » The study indicates that forests and oceans took up less CO2 during the 2000-2008 period than they did during the previous decade. They attribute the change to global warming and natural climate swings. Other researchers, however, point out that their work shows no change in the ability of these sinks to soak up CO2.

Still, because the Global Carbon Project was established to help inform political decisions on climate policies, its conclusions are likely to carry weight as negotiators grope their way toward a new climate treaty.

The list of outstanding issues is long, according to Jennifer Morgan, who heads the climate and energy program at the World Resources Institute in Washington. Convincing developed countries to make substantial emissions reduction is just one challenge. Convincing major developing countries to slow and eventually reverse their emissions trends is another, as is the need to provide financial aid to poorer countries to buy the technology needed to achieve goals they agree to. Finally, finding a monitoring regime and legal status for enforcement that all countries will accept won’t be easy,

« All the major economies coming to Copenhagen are coming ready to fill in those blanks, » says Ms. Morgan. These countries are looking for « what the [Obama] administration is able to bring to the table consistent with what Congress is debating » in energy and climate bills it’s currently considering.

Yet President Obama, during a summit with Chinese leaders this week, noted that « our aim … is not a partial accord or a political declaration, but rather an accord that covers all of the issues in the negotiations and one that has immediate operational effect. »

Some analysts who have been watching this process since the Kyoto Protocol was hammered out still say much can be accomplished at Copenhagen, even if the result falls short of a legally binding agreement for now.

« A few months before Kyoto, people were throwing up their hands saying nothing could happen. A month before Rio, in the final negotiating session, it was unclear there would be the political will to move an agreement forward for the heads of state, » says Alden Meyer, director of strategy and policy for the Union of Concerned Scientists in Washington. « Some of us have seen this movie before. Expectations are high and they should be kept high. »

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