Sentences with phrase «dioxide uptake»

Developed by Jain and his graduate students, the model includes complex physical and chemical interactions among carbon - dioxide emissions, climate change, and carbon - dioxide uptake by oceans and terrestrial ecosystems.

An AMOC slowdown would reduce regional warming a bit, especially in Europe, but «would also lead to a reduction of ocean carbon dioxide uptake, and thus an acceleration of global - scale warming.»

I found a paper from 2003 by a collection of climate scientist chaps from Princeton and other places, who estimated carbon uptake in various places and come to the conclusion: «there is more carbon dioxide uptake at low latitudes, and less at high latitudes, than the models predict.»

Prolonged suppression of ecosystem carbon dioxide uptake after an anomalously warm year.

· Changes in circulation and vertical mixing will influence nutrient availability and primary productivity, affecting the efficiency of carbon dioxide uptake by the oceans.

Impacts of large - scale and persistent changes in the MOC are likely to include changes to marine ecosystem productivity, fisheries, ocean carbon dioxide uptake, oceanic oxygen concentrations and terrestrial vegetation [Working Group I Fourth Assessment 10.3, 10.7; Working Group II Fourth Assessment 12.6, 19.3].

Thawing permafrost also delivers organic - rich soils to lake bottoms, where decomposition in the absence of oxygen releases additional methane.116 Extensive wildfires also release carbon that contributes to climate warming.107, 117,118 The capacity of the Yukon River Basin in Alaska and adjacent Canada to store carbon has been substantially weakened since the 1960s by the combination of warming and thawing of permafrost and by increased wildfire.119 Expansion of tall shrubs and trees into tundra makes the surface darker and rougher, increasing absorption of the sun's energy and further contributing to warming.120 This warming is likely stronger than the potential cooling effects of increased carbon dioxide uptake associated with tree and shrub expansion.121 The shorter snow - covered seasons in Alaska further increase energy absorption by the land surface, an effect only slightly offset by the reduced energy absorption of highly reflective post-fire snow - covered landscapes.121 This spectrum of changes in Alaskan and other high - latitude terrestrial ecosystems jeopardizes efforts by society to use ecosystem carbon management to offset fossil fuel emissions.94, 95,96

The cooling effect resulting from carbon dioxide uptake is actually up to 230 times greater than the warming effect expected from the emitted methane.

Additional carbon dioxide uptake causes direct changes in seawater acid - base and inorganic carbon chemistry in a process termed ocean acidification.

The researchers at the Laboratory for Climate Sciences and the Environment at Gif sur Yvette analysed computer models of the interactions between climate and the biosphere, and combined them with observations of carbon dioxide uptake from ecosystems, and records of crop yields.

For example, if it's a hot and dry afternoon, some plants may shut down their water use and carbon dioxide uptake in the afternoon.

Current polar orbiting satellites can only provide a single snapshot of carbon dioxide uptake and water release each day, at the same time of day, so scientists have to estimate how that one - time snapshot translates over the course of the entire day.

The results confirmed that the 3D - CON displayed outstanding low pressure hydrogen, methane, and carbon dioxide uptake with a high isosteric heat of adsorption.

So far however, no tool exists which would enable scientists to precisely calculate the carbon dioxide uptake of trees over their whole lifetime.

The winds are changing there, and carbon dioxide uptake may change too.»

Well according to a study in the journal Functional Ecology [Toshie Mizunuma et al., The relationship between carbon dioxide uptake and canopy colour from two camera systems in a deciduous forest in southern England], those images may be more than just pretty pictures.

Not exact matches

The centre runs research programmes in climate variability and change, the monitoring of sea levels, ocean uptake of carbon dioxide, and Antarctic marine ecosystems.

The finding also suggests that researchers may be dramatically underestimating biological productivity in the Arctic, which is connected to the region's uptake of carbon dioxide.

Since the growth of phytoplankton is limited by available nitrogen, and carbon dioxide is central to the growth process, Jones believes that supplying extra nitrogen to phytoplankton would increase the uptake of carbon.

The team discovered that the human impact on biogenic methane and nitrous oxide emissions far outweighed the human impact on the terrestrial uptake of carbon dioxide, meaning that humans have caused the terrestrial biosphere to further contribute to warming.

In Alaska, the Carbon in Permafrost Experimental Heating Research project heats tundra in plastic chambers to study the uptake and release of carbon dioxide.

Researchers at the U. of I. found that plants vary a lot in the efficiency with which they uptake carbon dioxide and conserve water.

«While methane and carbon dioxide emissions following thaw lead to immediate radiative warming,» the authors write, «carbon uptake in peat - rich sediments occurs over millennial time scales.»

Upper - ocean processes dissipate heat, transport nutrients and impact the uptake of carbon dioxide — making circulation a critical driver of biological activity in the ocean.

Ocean acidification, another change caused by the oceans» uptake of carbon dioxide, also hurts corals.

The model also accounted for natural drivers of change, including the direct influence of increased carbon dioxide on ocean - carbon uptake and the indirect effect that a changing climate has on the physical state of the ocean and its relationship to atmospheric carbon dioxide.

The uptake of fossil fuel carbon dioxide (CO2) by the ocean increases seawater acidity and causes a decline in carbonate ion concentrations.

According to Ingall, removal of iron by diatom - dominated phytoplankton communities may dampen the intended outcome of enhanced carbon uptake through iron fertilization by reducing the productivity of other phytoplankton, which take up carbon dioxide more efficiently.

The foaming agent could interfere with ocean ecologies or inhibit the uptake of carbon dioxide by the ocean — effectively negating one of the major ways that the world's oceans fight global warming naturally.

Energy loss can be measured in the form of carbon dioxide, whereas energy gain is measured as the calories acquired from nectar uptake.

This is an important advance because nutrient uptake is a central property of ocean biogeochemistry, and in many regions controls carbon dioxide fixation, which ultimately can play a role in mitigating climate change.

«We show that uptake of atmospheric NH3 (ammonia) onto surfaces containing TiO2 (titanium dioxide) is not a permanent removal process, as previously thought, but rather a photochemical route for generating reactive oxides of nitrogen that play a role in air pollution and are associated with significant health effects,» the authors write.

«A limit to the availability of iron in this region means that the ocean is less efficient in its uptake of atmospheric carbon dioxide,» he said.

From a peak of two billion tonnes of carbon dioxide each year in the 1990s, the net uptake by the forest has halved and is now for the first time being overtaken by fossil fuel emissions in Latin America.

More importantly, the 3D - CON displayed outstanding low pressure hydrogen (H2, 2.64 wt %, 1.0 bar and 77 K), methane (CH4, 2.4 wt %, 1.0 bar and 273 K), and carbon dioxide (CO2, 26.7 wt %, 1.0 bar and 273 K) uptake with a high isosteric heat of adsorption.

As the uptake of carbon dioxide has increased in the last century, so has the acidity of oceans worldwide.

University of Rhode Island Estimates of contemporary global air - sea carbon dioxide (CO2) flux (Takahashi et al. 2009; Landschützer et al. 2014) suggest that subtropical western boundary currents (WBCs) and their zonal extensions are key regions of oceanic carbon uptake (Figure 1a).

Changing living conditions caused by climate change or ocean acidification — the decrease of ocean pH due to the uptake of human - induced carbon dioxide from the atmosphere — pose serious threats to marine organisms.

«We have to consider there are two sides of the coin: On the one hand, the uptake of carbon dioxide moderates climate change but, on the other hand, it affects life in the ocean — with consequences for economy and society.»

Oceanic uptake of anthropogenic carbon dioxide (CO2) causes pronounced shifts in marine carbonate chemistry and a decrease in seawater pH. Increasing evidence indicates that these changes — summarized by the term ocean acidification (OA)-- can significantly affect marine food webs and biogeochemical cycles.

The potential of coastal ocean alkalinization (COA), a carbon dioxide removal (CDR) climate engineering strategy that chemically increases ocean carbon uptake and storage, is investigated with an Earth system model of intermediate complexity.

The seasonal fluctuation is caused by variations in uptake of carbon dioxide by land plants.

The importance of the Arctic Ocean in the context of global carbon dioxide (CO2) uptake and ocean acidification is widely accepted [1]--[9].

How do communities in the nutrient - poor, so - called oligotrophic open ocean react, if the seawater gradually acidifies due to the uptake of human - induced carbon dioxide (CO2)?

Abstract: The oceans are becoming more acidic due to the uptake of additional carbon dioxide from the atmosphere.

There are many benefits to this method, including the efficient uptake of oxygen and removal of carbon dioxide and other waste products in the lungs.

By measuring oxygen uptake and carbon dioxide output, the percentage of sugar - and fat - burning at specific heart rates could be determined.

Multiple studies have shown magnesium to be effective for buffering lactic acid, enhancing peak oxygen uptake and total work output, reducing heart rate and carbon dioxide production during hard exercise, and improving cardiovascular efficiency.

Particularly useful when under lots of stress, Rhodiola tends to offset the negative effects of increased carbon dioxide and lactic acid — which lowers oxygen uptake.

Oxygen uptake and carbon dioxide production were measured by using a respiratory chamber to assess changes in energy expenditure, respiratory quotient (RQ; CO2 produced / O2 consumed), and carbohydrate and lipid oxidation rates, respectively.