Sentences with phrase «land carbon cycle»

Professor Friedlingstein, who is an expert in global carbon cycle studies added: «Current land carbon cycle models do not show this increase over the last 50 years, perhaps because these models underestimate emerging drought effects on tropical ecosystems.»

Not exact matches

The price of protein: review of land use and carbon footprints from life cycle assessments of animal food products and their substitutes.

«Managing the carbon cycle is hard now, but it would be a lot harder without the land plants acting as a big sink.»

By using a combination of crop growth, hydrological, carbon and nitrogen cycle models, researchers found that the estimated land suitable for bioenergy grasses — particularly Miscanthus, the most productive bioenergy crop — is limited, despite its relatively high biomass productivity and low water consumption per unit of ethanol.

And while carbon dioxide is crucial for plant life, the carbon balance on Earth is a delicate cycle, with oceans and land able to absorb only so much CO2.

«Our new simulation strategy paves the way for better understanding of the water and carbon cycles in the Amazon,» says Gentine, whose research focuses on the feedback between land and atmosphere.

NASA's Orbiting Carbon Observatory - 2 (OCO - 2) mission was launched in July 2014 and has been consistently gathering data on patterns of carbon exchange between the land and the atmosphere around the globe over the course of 16 - day cycles, collecting roughly 2 million measurements each month.

This study highlights the key role of vegetation in controlling future terrestrial hydrologic response and emphasizes that the continental carbon and water cycles are intimately coupled over land and must be studied as an interconnected system.

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.

My rather old (1994) carbon cycle chart shows 111 GtC turned into biomass each year (61 land 50 ocean) compared to 750 in the atmosphere and 5.5 added to the atmosphere by human activity.

Human decisions have introduced additional perturbations to the carbon cycle, in the form of fossil - fuel burning, cutting down forests, and land use changes, just to name a few.

Schimel presented his work to forecast and understand land - ecosystem impacts on the carbon cycle at the global scale as part of the Frontiers in Global Change Seminar Series, June 21.

Marine planktonic ecosystem dynamics, biogeochemical cycling and ocean - atmosphere - land carbon system, ocean acidification, climate change and ocean circulation, satellite ocean color, air - sea gas exchange, numerical modeling, data analysis, and data assimilation

Here, greenhouse gas «fluxes» refers to the cycling of carbon between land, plants and the atmosphere.

Dargaville, R.J., et al., 2002: Evaluation of terrestrial carbon cycle models with atmospheric CO2 measurements: Results from transient simulations considering increasing CO2, climate, and land - use effects.

For instance, the sensitivity only including the fast feedbacks (e.g. ignoring land ice and vegetation), or the sensitivity of a particular class of climate model (e.g. the «Charney sensitivity»), or the sensitivity of the whole system except the carbon cycle (the Earth System Sensitivity), or the transient sensitivity tied to a specific date or period of time (i.e. the Transient Climate Response (TCR) to 1 % increasing CO2 after 70 years).

Human - induced changes to carbon fluxes across the land - ocean interface can influence the global carbon cycle, yet the impacts of rapid urbanization and establishment of wastewater treatment plants (WWTPs) on coastal ocean carbon cycles are poorly known.

Consequently, an international team of researchers led by Markus Reichstein, director at the Max Planck Institute for Biogeochemistry in Jena, Germany, investigated the influence of extreme climate events on the carbon cycle of land ecosystems and if the resulting additional CO2 emissions feedback on climate change.

His research is at the interface of ecosystems, land use, and climate change focusing on tropical deforestation and degradation, functional diversity of tropical canopies, conservation of African savannas, invasive species and climate change, and the effects of land use on the global carbon cycle.

«Climate scientists presume that the carbon cycle has come out of balance due to the increasing anthropogenic emissions from fossil fuel combustion and land use change.

The land biosphere is kind of a loose cannon in the carbon cycle, hard to predict what it will do.

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.

A lot to be learned about the carbon cycle on both ocean and land.

Their role in the carbon cycle is quite different from that of trees and other land plants, which actually absorb CO2 and serve as a storehouse, or «sink», of carbon.

It combines representations of the global economy, energy systems, agriculture and land use, with representation of terrestrial and ocean carbon cycles, a suite of coupled gas - cycle, climate, and ice - melt models.

Tax approximate CO2 emissions from final combustion of biofuels and biomass based strictly on product type without attempting to account for carbon sequestered during growth cycles or emitted during harvesting, distillation or other chemical processing or land - use impacts.

Carbon and Other Biochemical Cycles: On the headline statement in this section, Brazil insisted on nuancing the relative contribution of land - use change to the increase of CO2 concentrations, and including reference to the role of forests as sinks, with Venezuela proposing to refer to the net balance between emissions and carbon capture by land systems.

There's a lot of research that has produced more detailed knowledge on the carbon cycle of oceans and land areas.

Land use emissions are estimated using deforestation and other land - use data, fire observations from space and carbon cycle modelLand use emissions are estimated using deforestation and other land - use data, fire observations from space and carbon cycle modelland - use data, fire observations from space and carbon cycle modeling.

The literature since the AR4, and the availability of more simulations of the last millennium with more complete forcing, including solar, volcanic and greenhouse gas influences, and generally also land use change and orbital forcing) and more sophisticated models, to a much larger extent coupled climate or coupled earth system models, some of them with interactive carbon cycle, strengthens these conclusions.

We'd driving the models with the GHG concentrations, and using carbon cycle models within the climate models to simulate the natural carbon fluxes (atmosphere - land and atmosphere - ocean), which themselves are affected by the simulated climate change, and the residual needed to balance the carbon budget then indicates the anthropogenic emissions that would give the prescribed scenario of CO2 rise.

«Peak» land use, which impacts the carbon cycle, occurred before the estimate «peak» oil and is a more pressing issue in the long term than peak CO2.

Specifically, this chapter will examine the relationships between the physical climate system and the land surface, the carbon cycle, chemically reactive atmospheric gases and aerosol particles.

The myriad of processes that transform energy, that result in the motion of mass in the atmosphere, in oceans, and on land, processes that drive the global water, carbon, and other biogeochemical cycles, all have in common that they are irreversible in their nature.»

Pongratz explains that this research will be utilized to «make land - use decisions that will diminish our impact on climate and the carbon cycle.»

The third equation in our simple carbon - cycle model, which relates to C1, accounts for advection of CO2 into the thermocline and land — biosphere; b2 represents an adjustable diffusivity, while b1 + b3 + b4 = 0.85 is the fraction of CO2 that would remain in the atmosphere within a year of a pulse injection [11].

CO2 is part of a carbon cycle that is constantly recycled through the atmosphere, land and oceans.

Curiously, the PETM was accompanied by an exceptionally large change to the global carbon cycle as indicated by a large drop in the isotopic ratio of 13C to 12C in the ocean and on land.

It is a carbon cycle so the CO2 cycles around the atmosphere, land and oceans.

The land model has an interactive carbon cycle with the default nitrogen cycle modified to be constant, following [32].

However, today's carbon cycle models, especially the land models, vary greatly in the processes and level of detail they include, and so averaging may not be appropriate.

The results hold implications for land management, improved climate change models, and a better understanding of carbon cycling in soil microbial communities and how changes in global temperatures impact Earth's deserts.

As part of the Earth's natural carbon cycle, vast amounts of carbon dioxide are taken out of the atmosphere and absorbed by the land each year.

The need to adapt to a changing climate and eventually to mitigate climate change increasingly requires more accurate information on fluxes across the traditional domains atmosphere, ocean, land in order to improve our understanding of the major climatic cycles, carbon, water and energy.

Decay of a CO2 excess amount of 5000 PgC emitted at time zero into the atmosphere, and its subsequent redistribution into land and ocean as a function of time, computed by coupled carbon - cycle climate models.

They will provide ecologists and land managers with new and better information to support biodiversity conservation, wildfire risk assessment, and timber production while helping climate scientists and others to better understand the role that U.S. forests play in the global carbon cycle.»

Coupled carbon - cycle climate models indicate that less carbon is taken up by the ocean and land as the climate warms constituting a positive climate feedback.

Scientists have already speculated that volcanic cycles on land emitting large amounts of carbon dioxide might influence climate; but up to now there was no evidence from submarine volcanoes.

This Special Report discusses the global carbon cycle and how different land use and forestry activities currently affect standing carbon stocks and emissions of greenhouse gases.

Boreal forests and peat lands — which often include carbon - containing permafrost — play a critical role in the global carbon cycle, and therefore in regulating climate change.7, 15