Sentences with phrase «carbon dioxide increased from»

During the last 200 years, the concentration of atmospheric carbon dioxide increased from about 275 parts per million to about 380 parts per million.

Not exact matches

A joint statement from the National Academy of Sciences and Royal Society in Britain said «human - induced increases in CO2 (carbon dioxide) concentrations have been the dominant influence on the long - term global surface temperature increase.»

The destruction of forests causes an increase in carbon dioxide in the atmosphere due to the decomposition and burning of the forest and the fact that there are fewer trees to remove carbon dioxide from the air,

In addition to the effect on soil from tilling, emissions from the farm tractors increases carbon dioxide levels in the atmosphere.

Having babies in the bed with their parents increases risk of suffocation from parents or smothering from items in the bed like sheets, pillows or blankets, or babies re-breathing carbon dioxide if they are trapped beneath an object.

In animal models, exposure to cigarette smoke or nicotine during fetal development alters the expression of the nicotinic acetylcholine receptor in areas of the brainstem important for autonomic function, 28 alters the neuronal excitability of neurons in the nucleus tractus solitarius (a brainstem region important for sensory integration), 29 and alters fetal autonomic activity and medullary neurotransmitter receptors.30 In human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDS.

His figures from 147 weather stations around the world showed that average global temperatures increased by 0.59 F from 1880 to 1935 — double what he had predicted based on increasing carbon dioxide.

Second, analysis of isotopes, which can distinguish among sources of emissions, demonstrates that the majority of the increase in carbon dioxide comes from combustion of fossil fuels (coal, oil and natural gas).

Taken together, the research data provides a picture, from the leaf scale to the global scale, suggesting that droughts in the Amazon basin are affecting levels of carbon dioxide in the atmosphere globally, both on a short - term basis though decreasing photosynthesis and on a longer term basis, by increasing tree mortality.

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.

As temperatures rise due to higher carbon dioxide in the atmosphere, silicate - weathering rates are hypothesized to increase and remove carbon dioxide from the atmosphere faster.

He also models the global warming that would occur if concentrations of greenhouse gases in the atmosphere were to be doubled (due to increases in carbon dioxide and methane emissions from dragons and the excessive use of wildfire).

As the climate changes, Southern Ocean upwelling may increase, which could accelerate ice shelf melting, release more carbon into the atmosphere and limit the ocean's ability to absorb heat and carbon dioxide from the atmosphere.

This rapid increase in carbon dioxide as the world transitions from glacial to interglacial seems to be a pretty regular thing, they've found.

Antarctica was also more sensitive to global carbon dioxide levels, Cuffey said, which increased as the global temperature increased because of changing ocean currents that caused upwelling of carbon - dioxide - rich waters from the depths of the ocean.

Although natural photosynthesis plays a vital role in absorbing and «fixing» carbon dioxide emitted from fossil fuel use, it has not prevented the net increase of this gas in the atmosphere since the Industrial Revolution.

Increase the global temperature a bit, however, and there could be a bad feedback effect, with water evaporating faster, freeing water vapor (a potent greenhouse gas), which traps more heat, which drives carbon dioxide from the rocks, which drives temperatures still higher.

It may takes tens of thousands of years for oceans to recover from the acidity caused by increased levels of carbon dioxide

Since the beginning of industrialization around 1850, the levels of carbon dioxide have increased from 280 parts per million to about 365 today, says Pieter Tans, of the National Oceanic and Atmospheric Administration.

(The admirable original bill is designed to increase fuel efficiency in cars and light trucks, encourage production of biofuels, and provide funds to develop technology that will capture carbon dioxide emissions from power plants.)

Such one - step oxygen formation could be happening now as carbon dioxide increases in the region of the upper atmosphere, where high energy vacuum ultraviolet light from the Sun hits Earth or other planets.

The earthworm invasion of North America is increasing carbon dioxide and nitrous oxide emissions from the soil.

In 2015, the planet saw a number of such records set, from the hottest global temperature measured to the largest annual increase in carbon dioxide.

Therefore, there is concern that the emissions of carbon dioxide from streams and rivers may increase due to climate change, accelerating the growth of this greenhouse gas in the atmosphere.

«The increased carbon dioxide emissions from the nine government - approved plants alone will more than cancel out all of the reductions in greenhouse gas emissions from China's recent investments in wind and solar electricity,» Yang said.

Their main complaints are that the turbines are so inefficient that they actually increase carbon dioxide emissions, and so unreliable that they require constant backup from conventional coal and gas - fired stations.

Coal demand and carbon dioxide emissions from coal will continue to increase unless climate change policies are introduced, the IEA said.

As the ocean mass moves north, it absorbs additional carbon dioxide from decomposing organic matter in the water and sediments, increasing acidity.

When carbon dioxide, CO2, from the atmosphere is absorbed by the ocean, it forms carbonic acid (the same thing that makes soda fizz), making the ocean more acidic and decreasing the ocean's pH. This increase in acidity makes it more difficult for many marine organisms to grow their shells and skeletons, and threatens coral reefs the world over.

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.

Study co-author Katy Sheen, a Postdoctoral Research Fellow from Ocean and Earth Science at the University of Southampton, says: «These findings will help us to understand the processes that drive the ocean circulation and mixing so that we can better predict how our Earth system will respond to the increased levels of carbon dioxide that we have released into the atmosphere.»

Critics argue that albedo modification and other «geoengineering» schemes are risky and would discourage nations from trying to reduce their emissions of carbon dioxide, the heat - trapping gas that comes from the burning of fossil fuels and that is causing global warming by absorbing increasing amounts of energy from sunlight.

Clea Kolster, lead author and PhD student with the Grantham Institute at Imperial, said: «Revenue from oil does make the deployment of CCS far more attractive in the near term by providing the majority of capital in early years before carbon dioxide tax incentives have increased sufficiently to overtake oil revenue.

A single percent increase in gas turbine efficiency equates to millions of dollars in saved fuel costs for GE's customers and tons of carbon dioxide spared from the atmosphere.

Such a dramatic decline could turn the land from taking up carbon overall to pumping it out by 2100, as the rate of respiration by soil microbes, which exhale carbon dioxide, is predicted to increase in a warmer world.

As the oceans absorb increasing amounts of carbon dioxide from the atmosphere, ocean acidification is expected to make life harder for many marine organisms, especially shellfish and other animals with shells or skeletons made of calcium carbonate.

Because of those uncertainties, researchers can estimate only that doubling atmospheric carbon dioxide from preindustrial levels would increase global temperature between 1 °C and 5 °C.

As emissions from human activities increase atmospheric carbon dioxide, they, in turn, are modifying the chemical structure of global waters, making them more acidic.

As atmospheric CO2 levels increase from burning fossil fuels, this carbon dioxide is soaked up by seawater and makes the oceans more acidic.

Dams; rising temperatures and carbon dioxide concentrations; droughts; and increased runoff of nutrients from urban and agricultural lands are all compounding the problem.

Their intent, apparently, was to disparage the views of scientists who disagree with their contention that continued business - as - usual increases in carbon dioxide (CO2) emissions produced from the burning of coal, gas, and oil will lead to a host of cataclysmic climate - related problems.

From removing carbon dioxide and pollutants from the air, intercepting rainfall and increasing property values, California's 173.2 million city trees provide ecosystem services valued at $ 8.3 billion a yFrom removing carbon dioxide and pollutants from the air, intercepting rainfall and increasing property values, California's 173.2 million city trees provide ecosystem services valued at $ 8.3 billion a yfrom the air, intercepting rainfall and increasing property values, California's 173.2 million city trees provide ecosystem services valued at $ 8.3 billion a year.

«(A) describe increased risks to natural systems and society that would result from an increase in global average temperature 3.6 degrees Fahrenheit (2 degrees Celsius) above the pre-industrial average or an increase in atmospheric greenhouse gas concentrations above 450 parts per million carbon dioxide equivalent; and

While a strong El Niño has given global temperatures a boost, the bulk of that heat comes from the manmade global warming driven by increasing amounts of carbon dioxide and other greenhouse gases in the atmosphere.

From about 1940 to 1970 the increasing industrialisation following World War II increased pollution in the Northern Hemisphere, contributing to cooling, and increases in carbon dioxide and other greenhouse gases dominate the observed warming after the mid-1970s.

The global average carbon dioxide level reached a new record high of 397.2 parts per million last year, a nearly 2 ppm rise from 2013 and a 40 percent increase from preindustrial levels.

«The global spread of plants and their adaptations to life on land, led to an increase in continental weathering rates that ultimately resulted in a dramatic decrease the levels of the «greenhouse gas» carbon dioxide in the atmosphere and global cooling,» said co-author Dr. Jennifer Morris, from the University of Bristol.

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).

Scientists knew that the oceans had absorbed some of the carbon dioxide released from the increased global consumption of fossil fuels.

«The other carbon dioxide problem», «the evil twin of global warming», or part of a «deadly trio», together with increasing temperatures and loss of oxygen: Many names have been coined to describe the problem of ocean acidification — a change in the ocean chemistry that occurs when carbon dioxide (CO2) from the atmosphere dissolves in seawater.