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Topic: Carbon dioxide sink


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In the News (Thu 18 Apr 19)

  
  Carbon Dioxide Sink 1960-2000
The net sink flow rate of carbon dioxide to the oceans and to the biosphere was found to be strongly dependent on the atmospheric concentration.
When carbon dioxide is emitted from fossil fuels, cement production, or deforestation, the increased partial pressure of carbon dioxide in the atmosphere will force an increase of the absorption rate and thus a net sink flow of carbon to the backmixed surface layer of the oceans and to the biosphere.
Most global carbon dioxide models have very low sensitivity for the partial pressure on the oceanic uptake, and a quite large balancing term that is not controlled by the partial pressure in the biospheric model.
www.john-daly.com /ahlbeck/ahlbeck.htm   (3913 words)

  
  CO2 sink - CO2sink
A carbon dioxide sink or CO2 sink is a carbon reservoir that is increasing in size, and is the opposite of a carbon "source".
Oceans are natural carbon dioxide sinks, and as the level of carbon dioxide increases in the atmosphere, the level in the oceans also increases, creating potentially disastrous acidic oceans.
The carbon or plankton cells have to sink to the deep water in 2000 to 4000 meter to be sequestered for ca.
www.kopete.org /CO2-sink.html   (2647 words)

  
 The Environmental Literacy Council - Sources & Sinks
Carbon, for example, may be stored deep within ocean sediments for many millions of years or it might be cycled back into the atmosphere in a matter of hours.
The carbon cycle is one of the Earth's major biogeochemical cycles; vast amounts of carbon continuously cycle between the Earth's atmosphere, oceans, and land surfaces in both short and long-term cycles.
However, scientists are now beginning to believe that much of the 'extra' carbon dioxide released into the atmosphere through human activities are being absorbed by the oceans, making it a possibility that we could increase the "ocean sink" through a method called ocean fertilization.
www.enviroliteracy.org /article.php/439.html   (1072 words)

  
 Sink - Biocrawler   (Site not responding. Last check: )
In plumbing, a sink is a bowl-shaped fixture, usually made of porcelain (or, especially in the kitchen, stainless steel), that is used for washing hands or small objects such as dishes, nylons, socks or underwear.
Old sinks were often made of enameled steel or cast iron.
Sinks generally have faucets, usually cold and hot, and a drain.
www.biocrawler.com /encyclopedia/Sink   (244 words)

  
 Carbon sinks
The concept of carbon sinks is based on the natural ability of trees, other plants and the soil to soak up carbon dioxide and temporarily store the carbon in wood, roots, leaves and the soil.
The absorption of carbon dioxide by trees and the soil, proponents of carbon sink credits suggest, would be just as valid a means to achieve emission reduction commitments under the Kyoto Protocol as cutting emissions of carbon dioxide from fossil fuels.
Carbon sinks are thus likely to contribute to increasing long-term atmospheric concentrations of CO2 – the exact opposite of the intended effect, and a dangerous avoidance of emission cuts which need to take place now to avoid increasing the threats of climate change to future generations even further.
www.fern.org /pages/climate/carbon.html   (1003 words)

  
 Carbon dioxide sink - Wikipedia, the free encyclopedia
A carbon dioxide (CO) sink is a carbon reservoir that is increasing in size, and is the opposite of a carbon "source".
The former is primarily a function of differential CO solubility in seawater and the thermohaline circulation, while the latter is the sum of a series of biological processes that transport carbon (in organic and inorganic forms) from the surface euphotic zone to the ocean's interior.
A small fraction of the organic carbon transported by the biological pump to the seafloor is buried in anoxic conditions under sediments and ultimately forms fossil fuels such as oil and natural gas.
en.wikipedia.org /wiki/Carbon_dioxide_sink   (3202 words)

  
 Oceans Carbon Sink or Source
Carbon dioxide in the atmosphere can dissolve in water, and the colder and more turbulent regions of the oceans tend to absorb carbon dioxide, while the warmer and less turbulent regions release it, carbon dioxide being less soluble in warm water than in cold water.
The passive uptake and release of carbon dioxide is not as important, however, as the active uptake of carbon dioxide by the phytoplankton in photosynthesis and its active release in respiration by the whole community of marine organisms, which amount to about 100 Gt a year each way (Oceans and global warming, this series).
Other evidence has come to light since indicating that the increase of carbon dioxide in the atmosphere and global warming are undermining the conditions of growth for phytoplankton, which has the potential to wipe out the marine biota at its very basis and to aggravate global warming (Shutting down the oceans, this series).
www.i-sis.org.uk /OceanCarbonSink.php   (937 words)

  
 Carbon dioxide - Wikipedia, the free encyclopedia
Carbon dioxide is a colorless gas which, when inhaled at high concentrations (a dangerous activity because of the associated asphyxiation risk), produces a sour taste in the mouth and a stinging sensation in the nose and throat.
Acute carbon dioxide toxicity is sometimes known as choke damp, an old mining industry term, and was the cause of death at Lake Nyos in Cameroon, where an upwelling of CO -laden lake water in 1986 covered a wide area in a blanket of the gas, killing nearly 2000.
The decreased binding to oxygen in the blood due to increased carbon dioxide levels is known as the Haldane Effect, and is important in the transport of carbon dioxide from the tissues to the lungs.
en.wikipedia.org /wiki/Carbon_dioxide   (4475 words)

  
 CO2 sinks - Oceans
Around 88 thousand million tonnes of carbon is released from the surface of the world's oceans each year, with an annual uptake by the oceans of 90 thousand million tonnes.
Consequently, the net uptake of carbon dioxide by oceans is estimated to be approximately 2 thousand million tonnes annually.
However, as water temperatures increase the solubility of carbon dioxide is reduced and the likelihood of water stratification is increased - both leading to a overall reduction in oceanic carbon dioxide uptake.
www.ghgonline.org /co2sinkocean.htm   (287 words)

  
 9(r) The Carbon Cycle
chalk; and (5) in the oceans as dissolved atmospheric carbon dioxide and as calcium carbonate shells in marine organisms.
Carbon is released from ecosystems as carbon dioxide gas by the process of respiration.
Some carbon dioxide is released from the interior of the lithosphere by volcanoes.
www.physicalgeography.net /fundamentals/9r.html   (809 words)

  
 Carbon dioxide - Encyclopedia of Earth
Carbon dioxide (CO) is the most important greenhouse gas produced by human activities, primarily through the combustion of fossil fuels.
Charles D. Keeling was a pioneer in the monitoring of carbon dioxide concentrations in the atmosphere.
Of the carbon dioxide emissions arising from fossil fuel combustion—up to 6.5 Pg C each year—around 40% is a result of electricity generation, with coal-fired generation being the leading sector.
www.eoearth.org /article/Carbon_dioxide   (915 words)

  
 Climate Change | Carbon Dioxide Sinks
Carbon dioxide is constantly being removed from the atmosphere as part of the carbon cycle.
Carbon dioxide is the gas that is usually used to make the “fizz” in soda drinks.
When this slightly acidic rain meets carbonate rocks such as limestone or chalk, it dissolves some of the rock, which is then carried by streams and rivers back to the ocean.
www.seed.slb.com /en/scictr/watch/climate_change/sinks.htm   (902 words)

  
 Top Story - SATELLITE DATA HELP RESEARCHERS TRACK CARBON IN NORTHERN HEMISPHERE FORESTS - December 11, 2001   (Site not responding. Last check: )
Scientists hope to understand to what extent carbon is stored in the Earth's forests because of the need to account for the fate of the carbon released into the Earth's atmosphere in the form of carbon dioxide from fossil-fuel combustion.
The accumulation of carbon dioxide in the atmosphere is considered to be the primary forcing agent for global climate change, so forecasts of future climate require that the fate of carbon dioxide released into the atmosphere be understood.
Right now, scientists have inferred that there is a sink of 1 to 2 billion tons of carbon into the land regions of the northern hemisphere, which corresponds to some 15 to 30 percent of the global annual industrial carbon emissions.
www.gsfc.nasa.gov /topstory/20011204carbonsink.html   (902 words)

  
 CRC for Greenhouse Accounting - Reducing greenhouse: Carbon sinks
Carbon is continuously cycled between these reservoirs in the ocean, on the land, and in the atmosphere.
Plants remove carbon dioxide from the atmosphere and store the carbon in roots, stems, leaves and the soil in a process known as sequestration.
It is estimated that between 80 million and 140 million tonnes of carbon is released to the atmosphere from bush and grass fires in Australia each year, most as the greenhouse gas carbon dioxide.
www.greenhouse.crc.org.au /reducing_greenhouse/carbonsinks.cfm   (737 words)

  
 CO2 sinks - Plants
Though plants are very important sinks for atmospheric carbon dioxide on both land and in aquatic environments, uptake by aquatic plants is included in the discussion of oceanic carbon dioxide uptake elsewhere on the site.
A switch from forested land to agricultural crops means that carbon dioxide incorporated into plant tissues is taken out of the atmosphere for a much shorter time and so the effectiveness of the plants as atmospheric carbon dioxide sinks is much reduced.
However, in depth studies of this 'carbon dioxide fertilization' effect indicate that any such response will be rather limited, with any initial increase in the plant based carbon dioxide sink disappearing within only a few years.
www.ghgonline.org /co2sinkplants.htm   (282 words)

  
 EO Study: Rain Helps Carbon Sink
Though researchers have known of this North American carbon sink for the better part of the 20th century, they do not understand precisely what is causing the sink or why the amount of carbon absorbed seems to increase over the years.
The increased rate of the carbon sink results from a synchronous interplay between plant physiology and both the timing and magnitude of changes that impact the water cycle.
Plants absorb carbon dioxide from the air as they grow, and store it in their leaves, stems, and trunks.
earthobservatory.nasa.gov /Study/CarbonHydrology   (1401 words)

  
 North Sea efficient sink for carbon dioxide
Dutch-sponsored researcher Yann Bozec calculated that coastal seas such as the North Sea remove about three times as much carbon dioxide from the atmosphere than would be expected on the basis of their small surface area.
The measured annual increase in the concentration of carbon dioxide (CO2) in the atmosphere is only 60 percent of the annual emissions from fossil fuels.
This reduces the carbon dioxide concentration in the seawater thereby allowing more carbon dioxide to be absorbed from the atmosphere.
www.eurekalert.org /pub_releases/2005-10/nofs-nse100905.php   (532 words)

  
 Climate Change | Carbon Dioxide Sources
Carbon Dioxide (CO2) has been entering the atmosphere from many sources for millions of years.
It is now a big source of carbon dioxide and is having a major effect on the balance of the carbon cycle.
A carbon sink is something that removes carbon from the atmosphere.
www.seed.slb.com /en/scictr/watch/climate_change/sources.htm   (538 words)

  
 Studies Measure Capacity of "Carbon Sinks"   (Site not responding. Last check: )
The emission of carbon dioxide from the combustion of fossil fuels is the leading cause of the buildup of greenhouse gases in the atmosphere, which many people believe is the main culprit behind an increase in Earth's temperatures.
While some carbon is absorbed by organic matter such as trees and shrubs, carbon is also regularly emitted into the atmosphere by activities on land such as the burning of fossil fuels.
The first method involves measuring concentrations of carbon dioxide in the air as the air moves across landmasses from Point A to Point B. The second method entails making an inventory of all the carbon in a given area of ground and calculating the difference between the levels of carbon recorded from year to year.
news.nationalgeographic.com /news/2001/06/0621_carbonsinks.html   (832 words)

  
 SVS Science Story: Carbon Sink
The other half is accumulating as carbon dioxide in the atmosphere, which is thought by many to be responsible for global climate change.
Satellite observations of vegetation greenness is a measurement of the amount and functioning of plants which consume atmospheric carbon dioxide and synthesize sugars.
The carbon cycle on land, acted out here show a tree taking in carbon dioxide from the atmosphere, and combined with water and nutrients from the soil, growing.
svs.gsfc.nasa.gov /stories/carbonsink_20011211/index.html   (938 words)

  
 Weathervane - Carbon Sinks
The build-up of greenhouse gases -- primarily carbon dioxide -- in the atmosphere can be mitigated not only by reducing carbon emissions into the atmosphere but also by removing carbon dioxide from the atmosphere through the biological sequestration of carbon dioxide into a "sink" or by mechanical sequestration.
Furthermore, the establishment of carbon sinks in the form of new forests offers no new technical challenges and is also generally good for the environment in other ways.
Additionally, although the United States has not ratified the Kyoto Protocol, forest carbon sinks are among the tools under consideration by the states in their mitigation programs and in some of the legislation under consideration by the Congress.
www.weathervane.rff.org /policy_design/carbon_sinks.cfm?pf=1   (384 words)

  
 International Group Searches For Missing Carbon Sink
The group is completing a three-year study aimed at helping to resolve a controversy concerning the mysterious removal of a large amount of carbon dioxide from the Earth's atmosphere known as the missing sink.
In recent years, the missing sink has partially offset the large amount of carbon dioxide -- the dominant contributor to global warming -- emitted into the Earth's atmosphere.
Through inverse modeling and a unique, unified scientific approach, the group was able to map the sources and sinks of carbon dioxide in 22 regions: 11 on land and 11 at sea.
unisci.com /stories/20021/0211024.htm   (623 words)

  
 Carbon dioxide sink
A carbon dioxide (CO2) sink is a carbon reservoir that is increasing in size, and is the opposite of a carbon "source".
Carbon cycle — The carbon cycle is the biogeochemical cycle by which carbon is exchanged between the biosphere, geosphere, hydrosphere and atmosphere of the Earth.
Carbon Dioxide Findings Raise Biodiversity Concern (February 2, 1999) — Office and cubicle denizens rely on their Boston ferns or spider plants to help rid the air of so-called indoor pollution.
www.sciencedaily.com /articles/c/carbon_dioxide_sink.htm   (596 words)

  
 Carbon Sinks
These factors work together to reduce carbon uptake by an estimated 50% (Joos, 1999).  Some feel that the suppression of this THC would lead to a reduced ability to take up carbon while others believe that a slowing of THC will enhance biological processes, thus enhancing the uptake of carbon (Bryan, 1985).
That compares to less than 1%t of carbon retained by  organically active soil matter underlying the litter.  This appears to indicate  that food- producing  farmland  probably  sequesters an insignificant amount of carbon dioxide.
Semiletov, I. P., 1998.  Aquatic Sources and Sinks of Carbon Dioxide and Methane in the Polar Regions.
www.environmentalsciences.homestead.com /carbonsinks.html   (1332 words)

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