These are pollutants, particularly ozone and soot, that do not hang around in the atmosphere as carbon dioxide does.

这些污染物，尤其是臭氧和煤烟，不像二氧化碳那样悬浮在大气中。

youdao

Third, pollution from trucks and smoke covers glaciers with carbon soot so that their surfaces become darker and less reflective - causing them to melt more quickly.

第三，汽车尾气污染和烟雾使冰川被碳烟灰所笼罩，从而使冰川颜色变得更深而缺乏反射性——因而导致冰川加速融化。

youdao

But pyrolytic stoves produce almost no soot-the carbon is all locked into the biochar.

但是热分解炉几乎不产生黑烟，碳全都锁在了生物炭中。

youdao

Other observers have written that the focus on carbon dioxide above all else has been misplaced, since quick wins are available in other areas like cutting methane emissions or black carbon soot.

ECONOMIST: Leaked e-mails do not show climate scientists at their best

For now ArvinMeritor is marketing its plasma fuel reformer to the commercial trucking industry, which is scrambling to comply with tough new emission laws that are looming in Europe and the U.S. By 2007 the U.S. Environmental Protection Agency will require a 90% reduction in the amount of soot (unburned carbon).

FORBES: Clearing the Air

The authors say that while cutting back on soot is important, cutting carbon dioxide emissions is the best way to address climate change in the long term.

BBC: Climate change: Soot's role underestimated, says study