What if all the plants there started to capture less and
less carbon dioxide from the atmosphere?
With fewer leaves to absorb sunlight, the trees can't photosynthesise as much, and they absorb
less carbon dioxide from the air.
If the food doesn't have to travel far, there's
less carbon dioxide from the trucks that ship it [Related Story].
Researchers at Stanford University who closely track China's power sector, coal use, and carbon dioxide emissions have done an initial rough projection and foresee China possibly emitting somewhere between 1.9 and 2.6 billion tons
less carbon dioxide from 2008 to 2010 than it would have under «business as usual» if current bearish trends for the global economy hold up.
Not exact matches
Studies indicate
carbon dioxide emissions
from transportation in the province have declined 16 % in that time, and while it's impossible to draw a direct causal relationship between the tax and the emissions decline, it's fair to say it was a factor contributing to indisputable behavioural changes — you can't emit 16 %
less CO2 by doing the same things you did before.
Eating
less meat will free up a lot of agricultural land which can revert to growing trees and other vegetation, which, in turn, will absorb more
carbon dioxide from the atmosphere.
Manufacturing GHG emissions are primarily
carbon dioxide, with significantly
less contribution
from methane and nitrous oxide.
«The goal of our work was to develop an alternative approach to making ammonia, but the insights that have come
from this collaboration between our research groups can be applied to other difficult chemical processes, such as converting
carbon dioxide into a
less harmful and more useful product.
The simulations also suggest that the removal of excess
carbon dioxide from the atmosphere by natural processes on land and in the ocean will become
less efficient as the planet warms.
The simulations suggested that the indirect effects of increased CO2 on net primary productivity (how much
carbon dioxide vegetation takes in during photosynthesis minus how much
carbon dioxide the plants release during respiration) are large and variable, ranging
from less than 10 per cent to more than 100 per cent of the size of direct effects.
In fact, it would take 3,600 projects of Sleipner's scale — which is the largest such project underway — to reduce current
carbon dioxide emissions
from coal by
less than half, the report says.
«So, even well - managed present - day forests store much
less carbon than their natural counterparts in 1750, which explains the [net] lack of
carbon dioxide removal
from the atmosphere.»
In Maine, cooking the same turkey in the same oven but with electricity generated primarily
from renewable energy releases
less than three pounds of
carbon dioxide.
«However, ocean warming cancelled this benefit of elevated
carbon dioxide by causing stress to the animals, making them
less efficient feeders and preventing the extra energy produced by the plants
from travelling through the food web to the fish.
According to DOE, as those
less - efficient bulbs disappear, the savings will gradually add up — reducing
carbon dioxide emissions by 594 million tons
from 2012 to 2042.
The new study suggests that the impact may have released around three times as much sulfur and much
less carbon dioxide compared with previous estimates
from 20 years ago.
Pink salmon that begin life in freshwater with high concentrations of
carbon dioxide, which causes acidification, are smaller and may be
less likely to survive, according to a new study
from UBC.
Some prior research has suggested that
carbon dioxide emissions
from all lakes on Earth are
less than what was found in the Arctic, and future factors could shift the importance of sunlight, noted Lars Tranvik, a Swedish scientist, in an accompanying Science article.
These range
from stabilization of atmospheric
carbon dioxide at twice its pre-industrial value by the end of this century (IPCC SRES B1) to continuously increasing atmospheric
carbon dioxide at the rate of a bit
less than 1 % per year (IPCC SRES A2).
One sentence summary: Scientists at Pacific Northwest National Laboratory discovered that on large palladium particles, the abundance of active hydrogen atoms promotes the formation of methane
from carbon dioxide, but on the smaller particles,
less hydrogen is available and the reaction produces
carbon monoxide.
The change in the
carbon dioxide concentration
from the LGM to the pre-industrial period was
less than a doubling.
In a laboratory experiment, scientists
from GEOMAR Helmholtz Centre for Ocean Research Kiel showed that younger animals already eat
less and grow more slowly at only slightly elevated
carbon dioxide concentrations.
As regional warming caused an increased number of trees to die, there would be
less living trees to absorb
carbon dioxide from the atmosphere.
Libby's article speaks volumes about the difficulty of moving a world that is more than 80 percent dependent on fossil fuels toward one largely free of
carbon dioxide emissions
from such fuels within two or three generations, even as the human population heads toward 9 billion (more or
less).
But because they are released in tiny traces, they currently contribute
less than 1 percent of the climate - warming effect
from human - generated
carbon dioxide.
Here's the most important line
from Annan's Dot Earth comment, in which he notes how recent events point to
less warming
from a given buildup of
carbon dioxide:
Avoiding emissions now will be far
less expensive than capturing
carbon dioxide from air in the future.
Jesse Ausubel, an energy and environment expert at Rockefeller University, said in an e-mail message that the climate negotiations
from 1992 onward have mainly enshrined a natural trend, with plenty of bumps and dips, toward ever
less carbon dioxide emissions
from energy production.
It is like saying that if you drive at 55 miles an hour the
carbon dioxide emissions
from your car will be
less than if you drive at 70 miles per hour.
It would also mean the damages resulting
from carbon dioxide emissions would be
less for every ton of CO2 emitted (~ 20 tons of CO2 annually per capita in the US).
Late in October, California Governor Jerry Brown threatened to sue the administration of President Donald Trump for implementation of environmental policies focused more on real pollutants (e.g., heavy metals) and
less on contrived ones (e.g.,
carbon dioxide from fossil fuel combustion.
A range of companies have identified business opportunities in technologies designed to remove
carbon dioxide from the atmosphere and store it somewhere more or
less permanently.
Moreover, even when emissions
from the generation of electricity (upstream emissions) were considered, electric vehicles produced 21 times
less carbon dioxide equivalent emissions per year than their gasoline - powered alternatives.
Indeed, the FAR widened the likely range of temperature increase for a doubling of
carbon dioxide in the atmosphere
from the previous assessment, indicating greater uncertainty, not
less, about this issue.
As increased levels of greenhouse gases such as
carbon dioxide trap more solar heat radiating
from the Earth's surface,
less warmth reaches the stratosphere, which cools as a result.
We would have to develop new technologies that use energy more efficiently, emit
less carbon per unit of energy, remove
carbon from the atmosphere, and / or reduce the harm done by
carbon dioxide.
Risk of Sudden Catastrophic Warming This concern stems directly
from the possibility that the prospect of successful geoengineering would make emissions reductions seem
less urgent, allowing more and more
carbon dioxide to build up in the atmosphere over the century ahead.
A recent study
from the Swedish Ministry of Sustainable Development argues that males have a disproportionately larger impact on global warming («women cause considerably fewer
carbon dioxide emissions than men and thus considerably
less climate change»).
The study found that while the
carbon dioxide emissions of Chinese exports had either slowed their increase or decreased, the
carbon dioxide emissions of exports
from less developed countries had only increased.
However, the likely extent of global temperature rise
from a doubling of
carbon dioxide is
less than 1C.
Preventing
carbon dioxide levels
from rising to potentially dangerous levels could cost
less far
less than originally projected —
less 1 percent of gross world product as of 2050 — but a major shift in the way energy is found, transformed, transported and used will be necessary to prevent a severe energy crisis within the next century, say researchers
from the The Earth Institute.
They range
from a relatively trivial impact —
less than one degree Celsius warming
from a doubling of atmospheric
carbon dioxide — to more than five degrees.
After
less than two months in office, the new president, George W. Bush, had announced that he would abandon a campaign promise to regulate
carbon dioxide from coal - burning power plants, our greatest contributors to the greenhouse effect, and then swiftly pulled out of the Kyoto Protocol, the first binding international agreement to limit greenhouse gas emissions.
And you also knew, for example, that that an average gas driven car emitted 4.7 tons of
carbon dioxide per year and an electric car would cut that in half even when powered
from the current polluting grid, and much much
less on a life cycle basis
from a future global efficient renewable energy system displacing almost all fossil fuels.
Keeling was a joke, in
less than two years of «data gathering» he claimed to have shown a trend and concluded that man - made levels were rising — pretending to be measuring «pristine background levels of
carbon dioxide»
from the top of the world's highest active volcano, surrounded by active volcanoes on top of a great hot spot creating volcanoes in warm seas rocked by thousands of earthquakes every year.
Despite decades of persistent uncertainty over how sensitive the climate system is to increasing concentrations of
carbon dioxide from the burning of fossil fuels, we now have new satellite evidence which strongly suggests that the climate system is much
less sensitive than is claimed by the U.N.'s Intergovernmental Panel on Climate Change (IPCC).
This has left us with highly variable estimates of project costs, ranging
from Klaus Lackner's claim that air capture could be effectuated for
less than $ 100 per ton of
carbon dioxide to more than $ 1000 in a 2011 study, as well as the American Physical Society's estimate of about $ 600 per ton.
These new California standards also had the effect of improving fuel economy, since the only way to significantly reduce
carbon dioxide pollution
from gasoline is to burn
less of it.
Due to the chemistry of their magmas, the
carbon dioxide they are thought to emit is currently about the same as, or perhaps a little
less than,
from land volcanoes — about 88 million metric tons a year.
So,
from the example of Venus we can see «greenhouse effect» of
carbon dioxide is
less than 0.6 K / doubling.