p.p.m.

As soon as we convert to plug-in hybrid mining equipment, then it will all be smooth sailing back to 350 p.p.m. CO2.

Wonk Room » Sen. Robert Casey Joins Filibuster Threat Against Obama’s Cap And Trade Plan 2009

The atmosphere on Earth currently contains about 338 p.p.m. of CO2.

On Thursday, the Legg report will be published along with... 2009

The atmosphere on Earth currently contains about 338 p.p.m. of CO2.

On Thursday, the Legg report will be published along with... 2009

On a normal day the atmosphere contains 20,000 p.p.m. of water vapour and about 300 p.p.m. of carbon dioxide.

On Thursday, the Legg report will be published along with... 2009

The government paid scientists tell us that an increase of another 100 p.p.m. of CO2 over the next 50 years would result in a catastrophic global warming.

On Thursday, the Legg report will be published along with... 2009

December 11th, 2009 1: 00pm andrew adams - As far as I am aware, CO2 p.p.m. data does not appear to have shown a 'tipping point' when emissions have upset a finely balanced cycle.

On Thursday, the Legg report will be published along with... 2009

The ongoing enrichment of the atmosphere with CO2 raises the question of whether growth of forest trees, which represent close to 90% of the global biomass carbon, is still carbon limited at current concentrations of close to 370 p.p.m.

Q.e.d. « Climate Audit 2006

And more CO2 could make the ragweed pollen that exists more potent: if CO2 concentrations rise from current levels (385 parts per million) to 600 parts p.p.m., which could happen as soon as mid-century, ragweed pollen could become up to 70% more allergenic.

TreeHugger 2010

And more CO2 could make the ragweed pollen that exists more potent: if CO2 concentrations rise from current levels (385 parts per million) to 600 parts p.p.m., which could happen as soon as mid-century, ragweed pollen could become up to 70% more allergenic.

TreeHugger 2010

And more CO2 could make the ragweed pollen that exists more potent: if CO2 concentrations rise from current levels (385 parts per million) to 600 parts p.p.m., which could happen as soon as mid-century, ragweed pollen could become up to 70% more allergenic.

TreeHugger 2010