They do not expect the extraordinary growth to persist, but do expect emissions to return to something closer to the 3 percent yearly growth of the last decade, still a worrisome figure that signifies little progress in limiting greenhouse gases. The growth rate in the 1990s was closer to 1 percent yearly.

The combustion of coal represented more than half of the growth in emissions, the report found.

In the United States, emissions dropped by a remarkable 7 percent in the recession year of 2009, but rose by just over 4 percent last year, the new analysis shows. This country is the world’s second-largest emitter of greenhouse gases, pumping 1.5 billion tons of carbon into the atmosphere last year.

The United States was surpassed several years ago by China, where emissions grew 10.4 percent in 2010, with that country injecting 2.2 billion tons of carbon into the atmosphere. Carbon dioxide emissions are usually measured by the weight of carbon they contain.

The new figures come as delegates from 191 countries meet in Durban, South Africa, for yet another negotiating session in a global control effort that has been going on, with minimal success, for the better part of two decades.

“Each year that emissions go up, there’s another year of negotiations, another year of indecision,” said Glen P. Peters, a researcher at the Center for International Climate and Environmental Research in Oslo and a leader of the group that produced the new analysis. “There’s no evidence that this trajectory we’ve been following the last 10 years is going to change.”