Sentences with phrase «as atmospheric levels»

Since the icecap is melting as the atmospheric levels of the greenhouse gas carbon dioxide rise, and global temperatures rise with them, as a consequence of the human combustion of fossil fuels, the rate at which summer meltwater gets into the oceans becomes vital to climate calculations.

Global warming occurred as atmospheric levels of CO2 increased; The top of the Sun's atmosphere is ~ 91 % hydrogen; H - fusion occurs in the Sun; etc., etc..

Scientists are only beginning to do the research on how individual species of organisms might respond to increasing levels of ocean acidity as atmospheric levels of CO2 continue to rise.

As atmospheric levels of He are low, the efflux must be relatively rapid.

While 2015 may prove to be a fluke, computer models predict similar conditions will become more common as atmospheric levels of man - made greenhouse gases increase.

The latter effect acts to reduce CO2 sensitivity by increasing the aerosol - sensitive SW tau, increasing both cloud density and cover, decreasing upper tropospheric specific humidity and INCREASING SW albedo and will increasingly do so as the atmospheric level of CO2 rises!

The latter effect acts to reduce CO2 sensitivity by increasing the aerosol - sensitive SW tau, increasing both cloud density and cover, decreasing upper tropospheric specific humidity and SW albedo and will increasingly do so as the atmospheric level of CO2 rises!

Not exact matches

As SpaceShipTwo ascends, it will pass through the stratosphere, a narrow atmospheric layer found between 58,000 and 163,000 feet above sea level.

Also, Ice core samples that go back as far as 800,000 years have atmospheric gasses trapped within, so give a source to determine the make - up of the air, showing consistant level of carbon... directly refuting the AiG site that claimns the air has changed.

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.

Research into such solutions appears to be warranted given the massive hole we are presently digging ourselves into as far as stabilizing atmospheric greenhouse gas levels.

As shown in previous studies, the litter from the polluted site, which had endured high levels of atmospheric nitrogen oxides and ozone, had higher nitrogen content than litter from the clean site.

The last time the average atmospheric CO2 levels were around 400 ppm, as they are now, was 3 million years ago.

As atmospheric carbon dioxide levels increase, it becomes easier for trees to gather carbon dioxide and gives them a growing advantage over grasses.

The new research shows atmospheric carbon levels returned to normal within a few thousand years after the first pulse, probably as carbon dissolved in the ocean.

Using sophisticated atmospheric and climate models, the researchers estimated the levels of PM2.5 directly attributable to wildfires during a recent six - year period, 2004 to 2009, as well as under projected future climate change conditions (2046 - 2051).

A curious detail also shown by the study is a reduction in atmospheric pollution from lead during the last few decades, which, as Lozano concludes, «suggests that the global measures taken to reduce lead emissions, such as the use of lead - free gasoline, have helped to reduce the levels of this metal in the atmosphere.»

In the samples studied by the scientists, there are also high levels of atmospheric contamination from lead during the Roman Empire, when large quantities of this metal were extracted in the south of the Iberian Peninsula, as well as during the past 300 years, coinciding with the Industrial Revolution and the reactivation of mining activity in southern Spain.

As atmospheric CO2 levels rise, those in the oceans do too, changing the chemistry of the seawater.

Scientists can determine ancient atmospheric concentrations by measuring CO2 and methane levels in tiny air bubbles trapped in such ice, formed when the ice fell to the earth as snow.

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.

As the Industrial Revolution was gaining steam, in the 19th century, atmospheric CO2 levels were around 280 ppm.

«According to our long - term measurements, the atmospheric levels of PCBs at background sites in Africa are lower than in Europe, but the urban, and especially industrial, sites have the same PCB levels in Africa as they do in Europe.»

Due to low levels of atmospheric oxygen, the process may have been fermentative, still found in microbes such as yeast today.

Over the past 250 years, human activities such as fossil fuel burning have raised the atmospheric CO2 concentration by more than 40 % over its preindustrial level of 280 ppm (parts per million).

Plants are the original carbon capture and storage solution: as atmospheric carbon dioxide levels rise, plants absorb more of the gas to fuel photosynthesis, and more carbon is stored in the soil.

Fisher's pen makes up for a lack of gravity by storing ink in a cartridge pressurized with nitrogen at 35 pounds per square inch — more than twice as much force as sea - level atmospheric pressure on Earth.

And it finds that, while this winter's unusually strong Arctic Oscillation - which funnels cold northern air to the East Coast and pulls warm mid-latitude air up to the Arctic - is predicted as atmospheric carbon dioxide levels rise, seasonal temperature anomalies associated with it aren't enough to blunt long - term warming trends.

In the North Atlantic, more heat has been retained at deep levels as a result of changes to both the ocean and atmospheric circulations, which have led to the winter atmosphere extracting less heat from the ocean.

When it comes to climate change science, researchers typically use atmospheric carbon dioxide levels from the late 19th century as a guideline, because that's when instrumentation was developed to accurately measure temperatures.

«These findings add to mounting evidence suggesting that there are sweet spots or «windows of opportunity» within climate space where so - called boundary conditions, such as the level of atmospheric CO2 or the size of continental ice sheets, make abrupt change more likely to occur.

Nonetheless mature forests do play an important role in the global carbon cycle as stable carbon pools, and clearance of forests leads to an increase of atmospheric carbon dioxide levels.

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

As it dove through the gap, Cassini came within about 1,900 miles (3,000 kilometers) of Saturn's cloud tops (where the air pressure is 1 bar — comparable to the atmospheric pressure of Earth at sea level) and within about 200 miles (300 kilometers) of the innermost visible edge of the rings.

The researchers say their results agree with other indicators of historic atmospheric pollutant levels, such as ice cores.

Siberian surface rock was loaded with carbon, resulting in runaway global warming as atmospheric CO2 levels more than doubled.

But this also means that targets such as stabilizing atmospheric concentrations of CO2 at 450 parts per million (nearly double preindustrial levels) to avoid more than a 3.6 degree F (2 degree C) temperature rise are nearly impossible as well.

A well - known example are dinosaurs: Many theories about animal gigantism offer high levels of atmospheric oxygen as an explanation.

We know we won't cut all emissions tomorrow, and as noted above, even cutting emissions by 60 - 70 % and keeping atmospheric levels constant has considerable inertia.

But the IPCC report recently stated, «with atmospheric carbon dioxide levels rising almost twice as fast in the first decade of this century as they did in the last decades of the 20th century,» so I imagine usage rates are and will continue going up for some time yet.

Although atmospheric oxygen soon recovered again as photosynthesis and weathering reached a new balance, at about 10 per cent of present - day levels, the oxidative weathering of sulphides on land filled the oceans with sulphate which created abundant food for a group of bacteria that filled the oceans with sewer gas (hydrogen sulphide) toxic to oxygen - loving lifeforms (delaying the development of eukaryotic plants and animals) and turned them «into stinking, stagnant waters almost entirely devoid of oxygen.»

The Hadley Centre has calculated the massive increase in atmospheric CO2 levels if the Amazon was to die back as a result of global warming (climate models differ on how likely this is, I understand).

The effects on atmospheric carbon levels from landuse changes are highly uncertain, as I'm sure Ruddiman knows.

If we manage to stabilize CO2 levels at 450 ppmv (the atmospheric CO2 concentration as of 2010 is about 390 ppmv), according to the best estimate, we have a probability of less than 50 % of meeting the 2 °C target.

A 2008 study led by James Hansen found that climate sensitivity to «fast feedback processes» is 3 °C, but when accounting for longer - term feedbacks (such as ice sheet disintegration, vegetation migration, and greenhouse gas release from soils, tundra or ocean), if atmospheric CO2 remains at the doubled level, the sensitivity increases to 6 °C based on paleoclimatic (historical climate) data.

Study led by researchers from the CNRS, the University Grenoble Alpes, found out that atmospheric CO2 levels fluctuate seasonally as vegetation takes up the gas through leaves to produce biomass.

As summarized by geoscientist James Kasting in his 2010 book «How to Find a Habitable Planet»,» [h] abitable zones around Sun - like (F, G, and Early K) stars should be relatively wide because of the natural feedback between atmospheric CO2 [carbon dioxide] levels and climate — the same feedback loop that kept the Earth habitable early its history.

Combined with horrid loading times on every death, as well as any time you need to visit your safe haven to level up - and then go back into the world - this atmospheric marvel, is indeed terrible as an actual game.

From the gameplay trailer, and as Russ said in his preview it will clearly get compared to PlayDead's Inside, with the same atmospheric dystopia puzzle platformer, but do you think it can reach the same level as Inside?

To conquer and master each of the handcrafted levels, you must get into the flow of the pumping, atmospheric soundtrack, as enemies and traps move along with the rhythm.