Sentences with phrase «higher than carbon dioxide»

HFCs are chemicals primarily used in refrigeration, air conditioning, and foam blowing, which were introduced to replace the ozone depleting chemicals phased - out by the Montreal Protocol, despite the fact that HFCs are extremely harmful to the climate with global warming potentials hundreds and thousands of times higher than carbon dioxide (CO2).

The organic - grass - fed - gluten free - cold pressed turkey in your shopping cart is being refrigerated with some of the most potent greenhouse gases in the world called hydrofluorocarbons (HFCs)-- gases used in refrigerators and air conditioners with global warming potentials hundreds to thousands of times higher than carbon dioxide.

HFCs are extremely harmful to the climate, with global warming potentials hundreds and thousands of times higher than carbon dioxide (CO2).

These gases have global warming potentials (GWPs) ranging from hundreds to thousands of times higher than carbon dioxide (CO2).

WASHINGTON, D.C. - US President Obama and Chinese President XI have agreed to work together to combat climate change by curbing hydrofluorocarbons (HFCs)- super greenhouse gases with global warming potential hundreds and thousands times higher than carbon dioxide (CO2).

Not exact matches

The tweets, which included one saying «Today, the amount of carbon dioxide in the atmosphere is higher than at any time in the last 650,000 years.

«Today, the amount of carbon dioxide in the atmosphere is higher than at any time in the last 650,000 years.

(Pipelines leak methane at much higher rates than previously understood, and methane is much more dangerous to the environment than carbon dioxide.)

New research shows that hotter weather coupled with higher concentrations of carbon dioxide in the air prompt flowering plants to produce pollen that is far more noxious than pollen of the past.

Part of the problem is that the benefits of better plant growth, thanks to higher carbon dioxide concentrations (plants use CO2 for photosynthesis) are more than offset by the impact of higher temperatures and differing precipitation.

Although the concentration of carbon dioxide in the atmosphere is much higher, at around 385 parts per million, methane is a worry as it is much better than carbon dioxide at locking in heat from solar radiation.

The seven - day rainfall total from Harvey was as much as 40 percent higher than rainfall from a similar storm would have been decades ago, before human activity caused atmospheric carbon dioxide levels to spike, according to a study published yesterday in Geophysical Research Letters.

«Wheat's photosynthetic pathway evolved 100 million years ago when atmospheric carbon dioxide levels were up to 10 times higher than they are today,» he said.

Supercritical carbon dioxide is easier to compress than steam and allows a generator to extract power from a turbine at higher temperatures.

Although plant activity can increase with warmer temperatures and higher carbon dioxideconcentrations, the change in carbon dioxide amplitude over the last 50 years is larger than expected from these effects.

The atmospheric concentration of carbon dioxide, a critical greenhouse gas, is higher than it has been for at least 650,000 years.

Energy - related carbon dioxide emissions from developing countries will be 127 percent higher than in the world's most developed economies by 2040, according to figures released Thursday by the U.S.

«The world desperately needs higher - efficiency gas turbines because the end result is millions of tons of carbon dioxide that's not going into the atmosphere,» said Citeno, noting that in the last 2 years, more than 50 percent of gas turbines manufactured at GE's Greenville plant were exported to other countries.

This is because large animals disperse large seeded plant species often associated with large trees and high wood density — which are more effective at capturing and storing carbon dioxide from the atmosphere than smaller trees.

That deep water is not only rich in nutrients, it also has relatively high concentrations of carbon dioxide, both because it is cold (cold water can absorb and hold more carbon dioxide than warm water) and because the decomposition of organic matter that sinks into the depths releases carbon dioxide.

«I don't feel that we should be anywhere higher than 550 parts per million of carbon dioxide in our atmosphere,» David King, chief scientific adviser to the UK government, said in a speech earlier in 2004.

Taking each factor independently, the team found that CCS only achieves the necessary deployment under one of the following conditions: the price of oil is greater than $ 85 / barrel; the carbon tax incentives increase dramatically to above $ 75 per tonne of carbon dioxide by 2050; or learning rates for technology deployment are sustained at a high rate, with 14 % cost reduction for every doubling of deployment.

Emissions of a greenhouse gas that has 17,000 times the planet - warming capacity of carbon dioxide are at least four times higher than had been previously estimated.

Emissions of carbon dioxide are already far higher than the forests and oceans can absorb.

This is a schematic of a solar - powered electrolysis cell which converts carbon dioxide into hydrocarbon and oxygenate products with an efficiency far higher than natural photosynthesis.

Dr Tina Van De Flierdt, co-author from the Department of Earth Science and Engineering at Imperial College London, says: «The Pliocene Epoch had temperatures that were two or three degrees higher than today and similar atmospheric carbon dioxide levels to today.

Hydrogen can also be split from water in high - temperature nuclear reactors or generated from fossil fuels such as coal or natural gas, with the resulting carbon dioxide captured and sequestered rather than released into the atmosphere.

According to some accounts, the rise in carbon dioxide will usher in a new golden age where food production will be higher than ever before and most plants and animals will thrive as never before.

April will be the first time in human history where levels of atmospheric carbon dioxide were higher than 400 parts per million for an entire month, one scientist who monitors the levels said.

The coastal ecosystems of mangroves, seagrass meadows and tidal marshes mitigate climate change by sequestering carbon dioxide (CO2) from the atmosphere and oceans at significantly higher rates, per unit area, than terrestrial forests (Figure 1).

In 2008 carbon dioxide emissions from fossil fuels were ~ 40 % higher than those in 1990.

In the past 150 years, such activities have pumped enough carbon dioxide into the atmosphere to raise its levels higher than they have been for hundreds of thousands of years.

Palm trees grew on the North Slope of Alaska and carbon dioxide levels were 3 to 12 times higher than today's concentrations.

Now, if you have all this very cold, nearly freezing water surrounding these ice caps, sucking up carbon dioxide out of the polar atmosphere, at nearly the highest possible rate, 30 times faster than oxygen, and 70 times faster than nitrogen, doesn't it stand to reason that the air that remains might just have a lot less carbon dioxide in it than the atmosphere across the rest of the planet?

Ice core records prove that current levels of carbon dioxide and methane, both important greenhouse gases, are higher than any previous level in the past 400,000 years.

This clears the alveoli deep in the lungs of stale air with a high carbon dioxide content more efficiently than trying to inhale as much air as possible.

The metabolic effects of a ketogenic diet imply a higher - than - usual oxidation of fats, which leads in turn to reduced respiratory exchange ratio values.20, 97 Metabolic carbon dioxide output may be calculated as the product of alveolar ventilation multiplied by the fractional alveolar carbon dioxide concentration.

According to the study, battery electric vehicles offer a more affordable way to reduce carbon dioxide emissions than cars powered by hydrogen, citing lower costs and higher energy efficiency as the main reasons for the advantage.

He says ``... concentrations of carbon dioxide in the atmosphere eventually would reach levels higher than in the Pliocene era, more than 2.5 million years ago...» Surely this is an error.

With all the carbon available in the biosphere, the concentration of greenhouse gases such as carbon dioxide and light hydrocarbons had to have been substantially higher in the atmosphere than it is now.

Rather than focus on high - and low - polluting rich and poor nations, they focus on the emerging global class of a billion or so individuals — whether they reside in Shanghai or Chicago — who are responsible for an outsize portion of the world's emissions of carbon dioxide.

page 30: «Current carbon dioxide emissions are, in fact, above the highest emissions scenario developed by the Intergovernmental Panel on Climate Change (IPCC), implying that if we stay the current course, we're heading for even larger warming than the highest projections from the IPCC.»

This is followed by the authors» conclusion that while simple models (which consider only carbon chemistry) predict that the ocean will take up 70 - 80 % of the carbon dioxide we emit, the long - equilibrium will quite possibly be considerably higher than those models would suggest — given the changes to ocean circulation.

Between a two foot high greenhouse filled with atmosphere and a two foot high greenhouse filled with carbon dioxide there would be less than a thirtyieth of a degree difference — provided you had water at the bottom of the greenhouse to provide vapor feedback.

In fact, that all things green love carbon - dioxide rich environments is the ONLY thing we KNOW about the effects of increase CO2 levels, other than the fact that higher and higher levels of CO2 produce increasingly lesser and lesser amounts of heating due to the «greenhouse effect».

Surging greenhouse gas emissions: Global carbon dioxide emissions from fossil fuels in 2008 were nearly 40 percent higher than those in 1990.

Americans will have to pay much higher electricity prices despite the minuscule benefits of the Clean Power Plan, which reduces global carbon dioxide emissions by less than 1 percent and global temperatures by 0.02 degrees Celsius by 2100, according to EPA's own models.

For carbon capture facilities near oilfields, the possibility of selling carbon dioxide for use in enhanced oil recovery — even at a lower credit rate — will likely yield higher returns than other types of carbon storage, making it an enticing option.

Nevertheless, global temperatures were less then than they were in 2015 — and that is because background heating caused by increasing carbon dioxide levels in the atmosphere are higher today than they were in 1997 - 98.»

The increased levels of carbon dioxide in the atmosphere — now higher than at any time in at least the past few million years — can be found as fossil bubbles in the geologically short - lived «rock» that is polar ice.