Sentences with phrase «on global carbon cycling»

«The evidence suggests that human activities in coastal zones will continue to have an important impact on global carbon cycling,» Bauer said.

In sodium - poor soil, a University of Oklahoma ecologist has found, small amounts of added salt boost invertebrate biomass and increase decomposition — so much so, his latest work suggests, that a lack of salt could have a major impact on the global carbon cycle.

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.

Amazonian deforestation rates are used to determine human effects on the global carbon cycle (1 - 3) and to measure Brazil's progress in curbing forest impoverishment (1,4,5).

The abstract of that article is particularly terse on Nature.com: Amazonian deforestation rates are used to determine human effects on the global carbon cycle and to measure Brazil's progress in curbing forest impoverishment,,.

This data seems to suggest modern warming stronger than that seen in the medieval periods displayed (see figure 2): «Ensemble reconstruction constraints on the global carbon cycle sensitivity to climate»

Possibly one could write a popular book just on the global carbon cycle and especially the effect of the biosphere on it.

I'm perfectly comfortable admitting that I'm no expert on the global carbon cycle, but I'm equally comfortable suggesting that the data on the face of it don't tend to support your contention that 100 % of the CO2 rise is anthropogenic in origin.

Thirdly, Earth system models have begun to incorporate more realistic and dynamic vegetation components, which quantify positive and negative biotic feedbacks by coupling a dynamic biosphere to atmospheric circulations with a focus on the global carbon cycle (Friedlingstein et al., 2003, 2006; Cox et al., 2004, 2006).

gain new insights into the circulation of the Southern Ocean and its impact on the global carbon cycle

His work includes major field experiments on responses of California grassland to multi-factor global change, integrative studies on the global carbon cycle, and assessments of impacts of climate change on agriculture.

Ken Caldeira has been a Carnegie investigator since 2005 and is world renowned for his modeling and other work on the global carbon cycle; marine biogeochemistry and chemical oceanography, including ocean acidification and the atmosphere / ocean carbon cycle; land - cover and climate change; the long - term evolution of climate and geochemical cycles; climate intervention proposals; and energy technology.

The net impact of the 2015 — 2016 El Niño event on the global carbon cycle is an increase in atmospheric CO2 concentrations, which would likely be larger if it were not for the reduction in outgassing from the ocean.

Not exact matches

However, additionally, climate change is also being intensified on its own, because global warming is also causing the natural carbon cycle to change.

Understanding how microbial communities in the biocrusts adapt to their harsh environments could provide important clues to help shed light on the roles of soil microbes in the global carbon cycle.

To explain this apparent paradox, the researchers called upon a theory for how the global carbon cycle, atmospheric carbon dioxide and Earth's temperature are linked on geologic timescales.

By reconstructing past global warming and the carbon cycle on Earth 56 million years ago, researchers from the Niels Bohr Institute among others have used computer modelling to estimate the potential perspective for future global warming, which could be even warmer than previously thought.

Former President Barack Obama in 2014 made research on understanding carbon dynamics in these coastal ecosystems a priority because of their importance to the global 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.»

Understanding more about the interactions between the microbial communities — also called «microbiomes» — in the biocrusts and their adaptations to their harsh environments could provide important clues to help shed light on the roles of soil microbes in the global carbon cycle.

Lyons and coauthors, along with research groups from around world over, are focusing current efforts on the timing and drivers of oxygenation in the late Proterozoic, favoring a combination of global - scale mountain building, evolutionary controls on the way carbon is cycled in the biosphere, and concomitant climate events.

Now researchers at MIT and Bristol University in the United Kingdom have found that these microscopic, mixotrophic organisms may have a large impact on the ocean's food web and the global carbon cycle.

«Precise measurement of the solar - induced chlorophyll fluorescence, derived from OCO - 2 — but also from follow - on missions such as the European Sentinel - 5P, which will be launched coincidentally now on October 13th — enables scientists to quantify gross primary production and its contribution to the global carbon cycle,» says Guanter.

An article published in the Global Biogeochemical Cycles on 20th of February 2018 estimates that solar radiation mineralizes 45 teragrams of terrestrial dissolved organic carbon in the ocean.

Similar to the humans who find themselves sluggish during a heat wave, when water is scarce, Douglas firs also put the brakes on growing — a choice that could have ramifications for forest carbon stocks and the global carbon cycle.

Bauer also noted that for the first time, the Intergovernmental Panel on Climate Change (IPCC) is expected to acknowledge the importance of coastal waters to the global carbon cycle in its next report, due out in early 2014.

Climate change is thus inseparable from ocean change, and our ability to understand these changes relies heavily on our understanding of ocean ecosystems and, more specifically, the role of iron in regulating ocean productivity and hence the global carbon cycle and climate.

Researchers note that the global consequences on ecosystem function, biodiversity, and the carbon cycle that begets climate change could be great.

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, Juglobal scale as part of the Frontiers in Global Change Seminar Series, JuGlobal Change Seminar Series, June 21.

Ricke and Caldeira sought to correct that by combining the results from two large modeling studies one about the way carbon emissions interact with the global carbon cycle and one about the effect of carbon on the Earth's climate used by the Intergovernmental Panel on Climate Change.

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.

We use Earth's measured energy imbalance, paleoclimate data, and simple representations of the global carbon cycle and temperature to define emission reductions needed to stabilize climate and avoid potentially disastrous impacts on today's young people, future generations, and nature.

A global warming target is converted to a fossil fuel emissions target with the help of global climate - carbon - cycle models, which reveal that eventual warming depends on cumulative carbon emissions, not on the temporal history of emissions [12].

Polar amplication is of global concern due to the potential effects of future warming on ice sheet stability and, therefore, global sea level (see Sections 5.6.1, 5.8.1 and Chapter 13) and carbon cycle feedbacks such as those linked with permafrost melting (see Chapter 6)... The magnitude of polar amplification depends on the relative strength and duration of different climate feedbacks, which determine the transient and equilibrium response to external forcings.

The multi-model comparisons have been performed under the auspices of the WCRP — The World Climate Research Program, and small nimble organizations such as the Global Carbon Project (GCP) have been instrumental on synthesizing new knowledge about CO2 - emissions and the carbon cycle efficiently and with a minimum of bureaucratic overhead.

eg pg xii To improve our predictive capability, we need: • to understand better the various climate - related processes, particularly those associated with clouds, oceans and the carbon cycle • to improve the systematic observation of climate - related variables on a global basis, and further investigate changes which took place in the past • to develop improved models of the Earth's climate system • to increase support for national and international climate research activities, especially in developing countries • to facilitate international exchange of climate data

Over very long time periods such that the carbon cycle is in equilibrium with the climate, one gets a sensitivity to global temperature of about 20 ppm CO2 / deg C, or 75 ppb CH4 / deg C. On shorter timescales, the sensitivity for CO2 must be less (since there is no time for the deep ocean to come into balance), and variations over the last 1000 years or so (which are less than 10 ppm), indicate that even if Moberg is correct, the maximum sensitivity is around 15 ppm CO2 / deg C. CH4 reacts faster, but even for short term excursions (such as the 8.2 kyr event) has a similar sensitivity.

Below is some text from the sections on Ocean and global carbon cycle that explains the basic mechanism:

My research focuses on interactions among climate, the ocean and global carbon cycles, and marine ecosystems, and I have published more than 200 peer - reviewed scientific journal articles and book chapters on these and related subjects.

Together with the long - term decrease of 15 p.p.m.v. during the past four glacial cycles, we suggest significant slow fluctuations in the atmospheric CO2 concentration on timescales of several 105 years, probably influenced by changes in the weathering14 or by major reorganizations in the carbon reservoir of the global ocean15.

The CCS&T Group aims to increase understanding of the effects of global change on the carbon cycle and is part of the Environmental Research & Technology Division of the Environmental Sciences Department.

«The additional burden of CO2 added to the atmosphere by human activities... leads to the current «perturbed» global carbon cycle... These perturbations to the natural carbon cycle are the dominant driver of climate change because of their persistent effect on the atmosphere.»

Studies of the global carbon cycle often identify biomass energy as being among the most important potential benefits associated with the forest industry value chain...» They then go on to worry that the use of paper fiber (biomass) for fuel would cause ``... - market - distorting public policies that disproportionately favor the use of these materials for their fuel value, - public policies that fail to recognize the direct and indirect economic and social benefits associated with using biomass as a feed stock for forest products manufacturing,...».

The current political cycle is dominated by shrill attacks on anyone who questions whether man - made emissions of carbon dioxide are driving global warming.

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.»

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.

I have worked on a wide range of topics pertaining to the global carbon cycle and its relation to global climate, with special focus on ocean sedimentary processes such as CaCO3 dissolution and methane hydrate formation, and their impact on the evolution of atmospheric CO2.

BUT, other important / related parameters — BRDF (bidirectional reflectance distribution function)-- albedo i. /: 00 solar local time Neural network based on CYCLOPES and MODIS / wrong ALSO Need to make assumptions about carbon lost via respiration to go from GPP to / Cox et al. (2000) Acceleration of global warming due to carbon - cycle feedbacks in a coupled / / JRC / FastOpt: http://www.fastopt.com/topics/publications.htmlhttp://www.fastopt.com/topics/publications.html 50 0 = water; 1 /

The C - ROADS (Climate Rapid Overview and Decision Support) simulator is based on the biogeophysical and integrated assessment literature and includes representations of the carbon cycle, other GHGs, radiative forcing, global mean surface temperature, and sea level change.

Posted in Research Blogging, tagged carbon cycle, climate change, climate models, education, geoengineering, global warming, ocean acidification, programming, science, sea ice on September 16, 2012 14 Comments»