Sentences with phrase «atmospheric levels of carbon dioxide»

Since 2009, the planet has experienced its two warmest years on record, 2015 and 2014, while atmospheric levels of carbon dioxide have risen relentlessly, passing 400 parts per million.

The climate - change boundary means we must maintain atmospheric levels of carbon dioxide below 350 parts per million (ppm).

Thus it is scientifically proven that rising atmospheric levels of carbon dioxide cause global warming.»

The work gives support to a theory that an abrupt and dramatic rise in atmospheric levels of carbon dioxide triggered the massive die - off 251 million years ago.

This year, the planet passed a dangerous milestone when atmospheric levels of carbon dioxide exceeded 400 parts per million, prompting the scientific community to advocate renewed vigour in efforts to combat climate change, and the UNFCCC's Executive Secretary to call for a «policy response which truly rises to the challenge».

As I explained in a recent Nature online article, the latest IPCC report finds that, absent a sharp reversal of BAU trends, we are headed toward atmospheric levels of carbon dioxide far exceeding 1,000 parts per million by 2100.

... the latest IPCC report finds that, absent a sharp reversal of BAU trends, we are headed toward atmospheric levels of carbon dioxide far exceeding 1,000 parts per million by 2100.

«Without this long - term storage, there is little influence on atmospheric levels of carbon dioxide, a greenhouse gas that impacts earth's climate.»

This year, the planet passed a dangerous milestone when atmospheric levels of carbon dioxide exceeded 400 parts per million, prompting the scientific community to advocate renewed vigour in efforts to combat climate change, and the UNFCCC's Executive Secretary to call...

On May 9, 2013, atmospheric levels of carbon dioxide hit a new record high.

The model's YGP predictions for current atmospheric levels of carbon dioxide agreed reasonably well with the actual number of hurricanes seen in a typical year.

In 2013, atmospheric levels of carbon dioxide briefly hit 400 ppm for the first time in mid-May, but this year that symbolic threshold has been crossed even earlier.

The CCSM indicated that ocean waters warmed significantly at higher latitudes because of rising atmospheric levels of carbon dioxide (CO2), a greenhouse gas.

Already, atmospheric levels of carbon dioxide, the leading greenhouse gas, are approaching 400 ppm, and at least the amount of warming caused by that level is likely by century's end.

Rising atmospheric levels of carbon dioxide, blamed for global warming, may have a subterranean silver lining.

Columbia University physicist Peter Eisenberger created an effective model that proves, through real world testing, that carbon sequestration can be used on a global scale and can prevent the atmospheric levels of carbon dioxide from ever exceeding 450 ppm, below dangerous levels.

Indeed, the map at which JAXA spokesman Sasano was pointing (see photo above) had been expected by most experts to show that western nations are to blame for substantial increases in atmospheric levels of carbon dioxide, causing global warming.

A new atmosphere - ocean climate modeling study shows that the planet's temperature depends, ultimately, on the atmospheric level of carbon dioxide.

In 1981, he was a principal author of one of the first papers spelling out the links between rising atmospheric levels of carbon dioxide and rising global temperatures.

Jim had been invited to give a lecture in memory of Charles David Keeling, the legendary greenhouse pioneer who had shown that the atmospheric level of carbon dioxide has been rising steadily since 1958, when he first began monitoring the gas with an instrument on the summit of Hawaii's Mauna Loa volcano.

The US Environmental Protection Authority (EPA) air cheif was asked if she had any idea of what the atmospheric level of carbon dioxide is.

Only over climate timescales (typically, 30 years or more), do the long - term trends emerge that reflect the influence of changes in atmospheric levels of carbon dioxide.»

... A particular concern is that atmospheric levels of carbon dioxide may be rising faster than at any time in Earth's history, except possibly following rare events like impacts from large extraterrestrial objects.