Sentences with phrase «as changes in carbon dioxide»

Not exact matches

As reiterated in the Intergovernmental Panel on Climate Change report issued on March 31, scientists estimate that we can emit no more than 500 gigatonnes of carbon dioxide in order to limit the increase in global temperature to just 2 degrees C by 2100 (and governments attending the successive climate summits have agreed in principle to this objective).

As we recently reported in Nature Climate Change, significantly expanding sugarcane or lipidcane production in Brazil could reduce current global carbon dioxide emissions by up to 5.6 percent.

Using historical data, they included carbon dioxide from burning fossil fuels and changes in land use — such as deforestation.

As trees die and decompose, the concentrations of carbon dioxide in the atmosphere will increase, potentially speeding up climate change during tropical droughts.»

The indirect effects of rising atmospheric carbon dioxide (CO2) levels, such as changes in soil moisture and plant structure, can have a bigger impact on ecosystems than previously thought.

Archer therefore describes the climatic changes currently being experienced on Earth as «moderate,» thanks to the blanketing effect that naturally occurring carbon dioxide in the atmosphere has had.

A study provides the first evidence that pollen production is significantly stimulated by elevated carbon dioxide in a grass species as a result of climate change, which may have significant impact on human health.

Instead, the Administration's plans for energy conservation and using energy sources with less CO2 emission will help in the short - term, he said; down the road, a new National Climate Change Technology Initiative will help develop cutting - edge technologies such as fuel cells and carbon dioxide sequestration, Bush said.

Even if the United States implements all current and proposed policies, it would miss its 2025 target by as much as 1.5 billion metric tons of carbon dioxide per year — roughly 20 % of the nation's total emissions, according to the analysis published today in Nature Climate Change.

Any massive, long - term changes in their numbers could alter fish migration patterns, growth rates, and mortality, as well as change the amount of oxygen and carbon dioxide in the atmosphere.

Clear - cutting loosens up carbon stored in forest soils, increasing the chances it will return to the atmosphere as carbon dioxide and contribute to climate change, a Dartmouth College study shows.

The Intergovernmental Panel on Climate Change, in turn, estimated that China would surpass the United States as the world's leading emitter of carbon dioxide by that same year.

«As remarkable as it is that climate can change that quickly naturally, what is even more remarkable is that some of the rates of change we're experiencing today — increases in atmospheric carbon dioxide for example — are faster than anything we've been able to find in the past several million years of geologic historAs remarkable as it is that climate can change that quickly naturally, what is even more remarkable is that some of the rates of change we're experiencing today — increases in atmospheric carbon dioxide for example — are faster than anything we've been able to find in the past several million years of geologic historas it is that climate can change that quickly naturally, what is even more remarkable is that some of the rates of change we're experiencing today — increases in atmospheric carbon dioxide for example — are faster than anything we've been able to find in the past several million years of geologic history.

«It is very important to know the sources of carbon dioxide in running waters as well as the processes controlling respiration and emissions if we are to understand what happens when the environment changes,» says Erin Hotchkiss, researcher at Umeå University.

Changes in carbon dioxide levels may make it easier for new plants to take over the landscape, such as more shrubs growing in the Arctic.

In using the model to assess the ocean - carbon sink, the researchers assumed a «business as usual» carbon dioxide emissions trajectory, the Representative Concentration Pathway 8.5 scenario found in the Intergovernmental Panel on Climate Change for 2006 - 2010, where emissions continue to rise throughout the 21st centurIn using the model to assess the ocean - carbon sink, the researchers assumed a «business as usual» carbon dioxide emissions trajectory, the Representative Concentration Pathway 8.5 scenario found in the Intergovernmental Panel on Climate Change for 2006 - 2010, where emissions continue to rise throughout the 21st centurin the Intergovernmental Panel on Climate Change for 2006 - 2010, where emissions continue to rise throughout the 21st century.

Such rocks may prove good news for efforts to combat climate change because basalt reacts with carbon dioxide to form carbonate, locking a greenhouse gas in a carbonate mineral that often appears as white as snow.

Other threats such as extreme weather, farms turned to desert and choking smog are all exacerbated by climate change that results from rising concentrations of carbon dioxide in the air.

The team studied storm development from the Pliocene era, roughly three million years ago, and chose that time period because it was the last time the Earth had as much carbon dioxide as it does now, and the changes in climate from it can play a major role in storm formation and intensity.

The study argued that changes in the sun's radiation output played a major role in influencing shifts in Arctic air temperatures — a view at odds with mainstream climate science, which fingered atmospheric carbon dioxide as a bigger player.

When the world talks climate change — as is currently under way in Durban, South Africa — the main issue is carbon dioxide emissions.

There is, therefore, much current interest in how coccolithophore calcification might be affected by climate change and ocean acidification, both of which occur as atmospheric carbon dioxide increases.

«It is true that there are other factors (such as volcanism, the changes in the orbit and the axis of the Earth, the solar cycle), but numerous scientific studies indicate that most of the global warming in recent decades is due to the large concentration of greenhouse gases (carbon dioxide, methane, nitrogen oxide and others) mainly emitted due to human activity.»

By studying the relationship between CO2 levels and climate change during a warmer period in Earth's history, the scientists have been able to estimate how the climate will respond to increasing levels of carbon dioxide, a parameter known as «climate sensitivity».

As early as 1965, when Al Gore was a freshman in college, a panel of distinguished environmental scientists warned President Lyndon B. Johnson that carbon dioxide (CO2) emissions from fossil fuels might cause «marked changes in climate» that «could be deleterious.&raquAs early as 1965, when Al Gore was a freshman in college, a panel of distinguished environmental scientists warned President Lyndon B. Johnson that carbon dioxide (CO2) emissions from fossil fuels might cause «marked changes in climate» that «could be deleterious.&raquas 1965, when Al Gore was a freshman in college, a panel of distinguished environmental scientists warned President Lyndon B. Johnson that carbon dioxide (CO2) emissions from fossil fuels might cause «marked changes in climate» that «could be deleterious.»

Before Trump's reversal of both the domestic and international climate plans, the Intergovernmental Panel on Climate Change had recommended a 70 - percent cut in carbon dioxide emissions from industrialized nations such as the U.S., where nearly half of emissions come from the electric and automotive sectors.

However, a new University of Minnesota study with more than 1,000 young trees has found that plants also adjust — or acclimate — to a warmer climate and may release only one - fifth as much additional carbon dioxide than scientists previously believed, The study, published today in the journal Nature, is based on a five - year project, known as «B4Warmed,» that simulated the effects of climate change on 10 boreal and temperate tree species growing in an open - air setting in 48 plots in two forests in northern Minnesota.

A recent trend in GCMs is to extend them to become Earth system models, that include such things as submodels for atmospheric chemistry or a carbon cycle model to better predict changes in carbon dioxide concentrations resulting from changes in emissions.

If we embark on a path that is equivalent to setting emissions to zero now (say by having a period of negative emissions in the 2035 to 2050 time frame), and call the sequestration we accomplish mitigation then mitigation can arrest climate change, make adaptation unneeded and bring us to a safe concentration of carbon dioxide in the atmosphere as Hansen has pointed out.

December 8, 2017 India's steel industry, like America's, is dominated by electric - based processes November 20, 2017 Link between growth in economic activity and electricity use is changing around the world November 16, 2017 Growth in global energy - related carbon dioxide emissions expected to slow November 8, 2017 EIA forecasts growth in world nuclear electricity capacity, led by non-OECD countries October 25, 2017 China leads the growth in projected global natural gas consumption October 10, 2017 Buildings energy consumption in India is expected to increase faster than in other regions October 4, 2017 Global gas - to - liquids growth is dominated by two projects in South Africa and Uzbekistan September 27, 2017 Chinese coal - fired electricity generation expected to flatten as mix shifts to renewables September 19, 2017 Beyond China and India, energy consumption in non-OECD Asia continues to grow September 14, 2017 EIA projects 28 % increase in world energy use by 2040

As future climate changes become more severe, people might become interested in ways of offsetting the effects of human - induced climate, which could be cheaper than measures to cut carbon dioxide emissions.

As MGS skimmed the planet from pole to pole, it tracked changes in carbon dioxide ice deposits near the south pole of Mars.

Technologies for capturing and storing carbon dioxide emissions hold tremendous promise for addressing climate change, but much work remains to ensure timely, cost - effective deployment in key markets such as the electric power industry.

Keeping carbon dioxide deep underground and out of the atmosphere removes it as a player in climate change.

This is defined as the change in average global surface temperature for a given amount of carbon dioxide accumulated in the atmosphere.

Just as during the Permo - Triassic extinction, today's changes are caused by extra carbon dioxide in the atmosphere.

Evans said they expect to see seasonal changes in carbon dioxide, related to temperature; changes related to freshwater sources, such as glacier melt and stream outfalls; and changes connected to areas of large development.

Instead, we discussed the global issues we face in science — ranging from climate change, green chemistry, carbon dioxide recycling and renewable energies to personalised medicine, antibiotic resistance and many other globally relevant topics, as well as science careers.

His research interests include studying the interactions between El Niño / Southern Oscillation (ENSO) and the monsoons of Asia; identifying possible effects on global climate of changing human factors, such as carbon dioxide, as well as natural factors, such as solar variability; and quantifying possible future changes of weather and climate extremes in a warmer climate.

PNNL scientists also have contributed intellectual frameworks that influenced IPCC assessments and the broader climate change community in areas as diverse as integrated assessment, technology's role in mitigation, carbon dioxide capture and storage, and social science contributions in addressing climate change challenges.

The consensus is that several factors are important: atmospheric composition (the concentrations of carbon dioxide, methane); changes in the Earth's orbit around the Sun known as Milankovitch cycles (and possibly the Sun's orbit around the galaxy); the motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on the Earth's surface, which could affect wind and ocean currents; variations in solar output; the orbital dynamics of the Earth - Moon system; and the impact of relatively large meteorites, and volcanism including eruptions of supervolcanoes.

Reasoning that, because it fluctuated daily, water vapour was continually recycling itself in and out of the atmosphere, he turned his attention to carbon dioxide, a gas resident for a long time in the atmosphere whose concentration was only (at that time) dramatically changed by major sources such as volcanoes or major drawdowns such as unusual and massive episodes of mineral weathering or the evolution of photosynthetic plants: events that occur on very long, geological timescales.

Coral is already threatened by insidious change in sea water chemistry as ever more carbonic acid — from dissolved atmospheric carbon dioxide, the product of the combustion of fossil fuels — gets into the sea.

The principal climate forcing, defined as an imposed change of planetary energy balance [1]--[2], is increasing carbon dioxide (CO2) from fossil fuel emissions, much of which will remain in the atmosphere for millennia [1], [3].

As the impacts of climate change become more pronounced in coming years, BECCS and other negative emissions technologies are looked to as a means of avoiding dangerous future climate scenarios by removing carbon dioxide from the atmospherAs the impacts of climate change become more pronounced in coming years, BECCS and other negative emissions technologies are looked to as a means of avoiding dangerous future climate scenarios by removing carbon dioxide from the atmospheras a means of avoiding dangerous future climate scenarios by removing carbon dioxide from the atmosphere.

«For one thing, climate change and rising carbon dioxide levels have created an environment that's more hospitable to the growth of allergens such as mold,» says Jay Portnoy, MD, director of allergy, asthma and immunology at Children's Mercy Hospital in Kansas City, Mo. «What's more, we're living in cleaner indoor environments these days, so our immune systems go into overdrive when we're exposed to something unfamiliar, like dust mites or fur.»

Writing Task The Lesson Level Learning Goal for this task is: Construct and present an oral and written argument supported by empirical evidence and scientific reasoning to support the claim that activities such as deforestation or reforestation can cause changes in the carbon dioxide in the atmosphere.

However, this in itself is not enough to define what level of warming is «dangerous,» especially since the projections of actual impacts for any level of warming are highly uncertain, and depend on further factors such as how quickly these levels are reached (so how long ecosystems and society have had to respond), and what other changes are associated with them (eg: carbon dioxide concentration, since this affects plant photosynthesis and water use efficiency, and ocean acidification).

Even in the absence of huge amounts of carbon dioxide as a forcing mechanism, he said, there still appear to be trigger points that, once passed, can produce rapid warming through feedbacks such as changes in sea ice and the reflectivity of the Earth's surface.

As the post explains, Broecker's 1975 paper appears to have been the first in the scientific literature to use the term «global warming» to describe climate change driven by the buildup of human - generated carbon dioxide.