Sentences with phrase «terrestrial sinks»

If we regress the annual rate of CO2 change against temperature, we are likely to see a significant short term temperature effect as warming reduces the solubility of CO2 in the surface ocean layers (with effects on terrestrial sinks as well).

The United Nations Framework Convention on Climate Change recognizes that carbon sinks (and more specifically terrestrial sinks) are being affected due to human activities related to Land Use, Land - Use Change and Forestry (LULUCF).

Meanwhile both the emissions and the sink capacity of the biosphere increased (there are newer references, but my computer still is in repair...), but the terrestrial sinks don't exceed more than about 1 / 4th of the human emissions.

Secondly, and more importantly, nature could provide humans with a helping hand to reach those lofty CO2 concentration targets through the combination of natural terrestrial sinks becoming less effective, along with new sources of carbon emissions appearing as a result of rising global temperatures.

Informal consultations took place on the reference to the role of terrestrial sinks, after which the headline statement was adopted.

The US suggested adding terrestrial sinks, and mentioning that the increase in CO2 concentrations is «secondarily» from land use change, while Norway stated that it would not be appropriate to mention terrestrial sinks here.

Or we might find that the oceanic and terrestrial sinks that we're counting on to absorb our emissions are declining even faster than we currently fear, and conclude that we need even more mitigation.

The tendency of atmospheric CO2 excess to dissipate into the ocean and terrestrial sinks is a decay function, whereas the observation that about half of an added emission disappears into those sinks is a distribution function.

They are partitioned between the atmosphere and oceanic or terrestrial sinks.

It's possible that terrestrial sinks could continue to sop up and sequester some anthropogenic carbon, but there's an owful lot of near - surface carbon and if that get's oxidized at some point in the future, then we could be in even hotter water.

PNAS 2007) that the «terrestrial sink» is or soon will be «saturated».

(1) I don't think there are any known mechanisms that would explain having nearly so large terrestrial sink in N. America.

What conceivable mechanism could justify an imagined terrestrial sink that's some multiple of the currently understood flux?

Then when they have partitioned themselves according to the original distribution, we will still have 15 % of the green molecules in the atmosphere, and these will only disappear over the longer time that it takes for mixing with the deep ocean and permanent uptake in the terrestrial sink, possibly more than 1000 years.

Rob — A «terrestrial sink» consists mainly of plant life.

I consider a terrestrial sink to be both land and plant life, which would also mean that the CO2 is «missing» since we do not know where it went.

«It's important we get a better understanding of the terrestrial sink because if it weakens, more of our emissions will end up in the atmosphere, increasing the rate of climate warming.

Quoting from a really bad RC post gives a disservice to the numbers, however they are only using the terrestrial sink, the ocean biosphere is around equal, with the remainder being the airborne fraction (Which has exhibited step like changes in the last 20 yrs)

Not exact matches

Although the oceans are currently the greatest carbon sink, terrestrial carbon sinks also play a significant role in keeping the carbon out of the atmosphere.

All told, by Luyssaert's calculations the relatively small remaining stands of old - growth forests in the U.S. Pacific Northwest as well as Canada and Russia consume «8 to 20 percent of the global terrestrial carbon sink,» or roughly 440.9 million tons (0.4 gigatonnes) of carbon per year.

A recent NASA study showed that these regions are the biggest terrestrial carbon dioxide sinks on our planet, absorbing 1.4 billion metric tons of CO2 out of a total global terrestrial absorption of 2.5 billion.

The exact thickness of that layer is unknown, but as it gradually cools, it should form solid chunks that sink like iron snow into the denser, solid inner core, also of unknown size, says geophysicist Sean Solomon of the Carnegie Institution of Washington's Department of Terrestrial Magnetism, the mission's principal investigator.

The latest IPCC report concludes that the terrestrial biosphere will become a source rather than a sink of carbon before the end of the century.

«Our estimates suggest that, currently, the global established forests which are outside the [tropics] alone can account for the terrestrial carbon sink,» the study found.

«(C) the carbon cycle, including impacts related to the thawing of permafrost, the frequency and intensity of wildfire, and terrestrial and ocean carbon sinks;

The question of whether accelerated carbon sinks on land can turn to accelerated carbon sources is something a lot of terrestrial carbon cycle modellers are interested in, but I couldn't give you an accurate read on the state of the art there, except that some models do show the land sink turning into a land source given sufficient warming.

We find that under a «business as usual» scenario, the terrestrial biosphere acts as an overall carbon sink until about 2050, but turns into a source thereafter.

Anthony Janetos • Lead Author, Working Group II, «Impacts, Adaptation and Vulnerability» of the IPCC Fourth Assessment Report (2007) • Contributing Author, Working Group I, «The Carbon Cycle,» IPCC Third Assessment Report (2005) • Lead Author, IPCC Special Report: Land Use, Land - Use Change and Forestry (2000) • Lead Author, Working Group I, «Greenhouse Gases: Sources and Sinks,» IPCC Second Assessment Report (2000) • Contributing Author, Working Group II, «Natural Terrestrial Ecosystems,» IPCC First Assessment Report (1990).

In addition, they act as sinks for terrestrial runoff, supplying abundant nutrients to habitats for many species.

In the meantime the greedheads serving the industrialized nations with raw materials are cutting down the tropical (terrestrial) carbon sinks as fast as they can keep the chainsaws gassed up.

I had some observations to add about the current state of the terrestrial biosphere carbon sink:

The discussion talks explicitly about how diminishing terrestrial and ocean carbon sinks over time require reduced CO2 emissions from fossil fuels / land use to achieve stabilization goals at various levels (e.g. 550 ppmv of CO2 in the atmosphere).

(1) A few years back, there was much discussion of the terrestrial «missing carbon sink».

Of the emitted CO2 from burning of fossil fuels, about 50 % is absorbed by the ocean and terrestrial carbon sinks at present.

The question of whether accelerated carbon sinks on land can turn to accelerated carbon sources is something a lot of terrestrial carbon cycle modellers are interested in, but I couldn't give you an accurate read on the state of the art there, except that some models do show the land sink turning into a land source given sufficient warming.

What the skeptics have really done so far is use simple models to observe the «missing sink,» which other carbon cycle modelers discovered and named years ago (and more or less attributed to NH terrestrial biosphere).

Neither the terrestrial nor the marine carbon sinks have known large - scale thesholds yet they are exceedingly important for the functioning of the climate system, which does indeed have known large - scale thresholds such as the melting of the Greenland ice sheet.

The Canadian Boreal is the world's largest single terrestrial carbon sink.

The addition of the terrestrial biosphere models that simulate changes in terrestrial carbon sources and sinks into fully coupled climate models is at the cutting edge of climate science.

Immediate challenges that confront models of the terrestrial - atmosphere system include exchanges of carbon and water between the atmosphere and land, and the terrestrial sources and sinks of trace gases.

Soil is a vast carbon sink, containing more carbon than all terrestrial vegetation and the atmosphere combined.

Most is attributable to CO2 uptake by forests — see Terrestrial Carbon Sinks.

Within terrestrial systems the question of the carbon sink - source pattern is central: what is it and how might it change?

The reasons are also based on the physics, which require that initial equilibration involves the rapidly equilibrating sinks in the ocean mixed layer and some terrestrial sources, while the overall decay rate that involves slower equilibration with larger sinks is much slower.

We propose that the recent disproportionate rise and fall in CO2 growth rate were caused mainly by interannual variations in global air temperature (which altered both the terrestrial biospheric and the oceanic carbon sinks), and possibly also by precipitation.

The existence of this oceanic carbon pump also raises questions about the need for a large terrestrial carbon sink in the Northern Hemisphere, as postulated by Tans et al. 3, to balance the present global carbon budget.

Using the NDVI, one team this year reported that «over the last few decades of the 20th century, terrestrial ecosystems acted as net carbon sinks,» i.e., they absorbed more carbon than they were emitting, and «net greening was reported in all biomes,» though the effect had slowed down in recent years.

This finds stronger and solid footing in Article 5.1, which states, «Parties should take action to conserve and enhance, as appropriate, sinks and reservoirs of greenhouse gases» (i.e. «biomass, forests and oceans, and other terrestrial, coastal and marine ecosystems»).

«(C) the carbon cycle, including impacts related to the thawing of permafrost, the frequency and intensity of wildfire, and terrestrial and ocean carbon sinks;

As shown in part «b» in Wieder et al.'s figure, the terrestrial carbon store over the 21st Century changes from a net sink of 125 GtC to a net source of 156 GtC once nutrient constraints are imposed.