Our findings have significance
for global carbon cycling, oceanic carbon sequestration, and the cellular biology of coccolithophores.
The consequences of these microbial interactions are critically important
for the global carbon cycle, and for us.»
This has major implications
for the global carbon cycle,» Gregg said.
Not exact matches
The study also has implications
for understanding the
global carbon cycle that involves the transport of surface
carbon back into the Earth's mantle.
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.
«It's a mechanism
for the rivers» role in the
global carbon cycle — it's the food
for the river breath.»
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.
According to the research team, this suggests that the continental shelves are becoming a crucial element in the
global carbon cycle and
for the climate system.
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.
Unicellular photosynthetic microbes — phytoplankton — are responsible
for virtually all oceanic primary production, which fuels marine food webs and plays a fundamental role in the
global carbon cycle.
In a paper published in Science Advances, he proposes that mass extinction occurs if one of two thresholds are crossed:
For changes in the
carbon cycle that occur over long timescales, extinctions will follow if those changes occur at rates faster than
global ecosystems can adapt.
«It is a sink
for lots of diverse waste products; the microbe processes these products and then releases methane back into the
global carbon cycle.»
«Methanogens are critical players in the
global carbon cycle and have potential uses
for addressing human problems,» says William W. Metcalf, a microbiologist at the University of Illinois at Urbana - Champaign, and a member of the research team.
This bonding behavior could therefore have significant implications
for carbon reservoirs and fluxes, as well as
for our understanding of the
global geodynamic
carbon cycle [E. Boulard et al., Tetrahedrally coordinated carbonates in Earth's lower mantle, Nature Comm.
M2009 use a simplified
carbon cycle and climate model to make a large ensemble of simulations in which principal uncertainties in the
carbon cycle, radiative forcings, and climate response are allowed to vary, thus yielding a probability distribution
for global warming as a function of time throughout the 21st century.
ECCO model - data syntheses are being used to quantify the ocean's role in the
global carbon cycle, to understand the recent evolution of the polar oceans, to monitor time - evolving heat, water, and chemical exchanges within and between different components of the Earth system, and
for many other science applications.
Proposed explanations
for the discrepancy include ocean — atmosphere coupling that is too weak in models, insufficient energy cascades from smaller to larger spatial and temporal scales, or that
global climate models do not consider slow climate feedbacks related to the
carbon cycle or interactions between ice sheets and climate.
Since this goes along with an increasing greenhouse effect and a further
global warming, a better understanding of the
carbon cycle is of great importance
for all future climate change predictions.
«Generally accepted modern understanding of the
global carbon cycle indicates that climate effects of CO2 releases to the atmosphere will persist
for tens, if not hundreds, of housands of years into the future.»
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
Once again, if you want to live in energy gluttony without involving the
global carbon cycle, start with a basic allocation of 100 square meters of solar cell area
for each person, and get to work.
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.
To put this into context, estimates of life -
cycle global warming emissions
for natural gas generated electricity are between 0.6 and 2 pounds of
carbon dioxide equivalent per kilowatt - hour and estimates
for coal - generated electricity are 1.4 and 3.6 pounds of
carbon dioxide equivalent per kilowatt - hour [14].
If one tried to actually write «the» partial differential equation
for the
global climate system, it would be a set of coupled Navier - Stokes equations with unbelievably nasty nonlinear coupling terms — if one can actually include the physics of the water and
carbon cycles in the N - S equations at all.
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,...».
Kadyszewski presented ACR's Climate Leadership award to Dr. Sandra Brown, Winrock senior scientist and former director of Winrock's Ecosystem Services Group,
for four decades of work advancing the understanding of the role forests play in the
global carbon cycle.
Mathematical physicist Enting (author of the Australian Mathematical Scences Institute book Twisted: The distorted mathematics of greenhouse denial) worked at Australia's leading science agency, the CSIRO,
for 24 years in atmospheric research and modelling of the
global carbon cycle.
The lighter shaded areas depict the change in this uncertainty range, if
carbon cycle feedbacks are assumed to be lower or higher than in the medium setting...
Global mean temperature results from the SCM
for anthropogenic and natural forcing compare favourably with 20th - century observations (black line) as shown in the lower left panel (Folland et al., 2001; Jones et al., 2001; Jones and Moberg, 2003).
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.
And then, ignoring that the heat we feel from the Sun is thermal infrared so does reach us, say that
carbon dioxide a trace gas, and already fully part and parcel of the cooling
cycling of the Earth in the Water
Cycle, is responsible
for raising the temperature of the Earth from -18 °C to 15 °C, without ever giving any rational explanation as to how it actually does this, and, that doubling it will cause catastrophic runaway
global warming, doubling a trace gas it still remains a trace gas.
In the
global aggregate, 21 gigatons of
carbon dioxide emissions a year, more or less, is the sustainable
global limit
for natural
cycles to keep atmospheric
carbon dioxide levels level.
And you also knew,
for example, that that an average gas driven car emitted 4.7 tons of
carbon dioxide per year and an electric car would cut that in half even when powered from the current polluting grid, and much much less on a life
cycle basis from a future
global efficient renewable energy system displacing almost all fossil fuels.
M2009 use a simplified
carbon cycle and climate model to make a large ensemble of simulations in which principal uncertainties in the
carbon cycle, radiative forcings, and climate response are allowed to vary, thus yielding a probability distribution
for global warming as a function of time throughout the 21st century.
Carbon dioxide (CO2) and methane (CH4) are the two most important anthropogenic greenhouse gases (GHGs) and a focus of international research activities related to a better understanding of the
carbon cycle (see,
for example, the
Global Carbon Project (GCP)-RRB-.
That means this
carbon has not been a part of the
global carbon cycle for thousands of years, and releasing it now could have devastating consequences.
«The
Global Carbon Budget and the information presented here are intended
for those interested in learning about the
carbon cycle, and how human activities are changing it.
Written in an accessible way, and assuming no specialist prior knowledge, this important book examines the processes of climate change and climate stability, from the distant past to the distant future.This book examines the greenhouse effect, the
carbon cycle, and what the future may hold
for global climate.
(oh, and the whole 13C thing has been known
for a long time: «(2) consistent relationships between δ13C and CO2 (Rayner et al., 1999),» — or, google «13c
global carbon cycle model»)
For instance, about half the total rise in atmospheric CO2 concentration has occurred in just the last 30 years — and of all the
global life - support systems, the
carbon cycle is closest to no - return.
The document introduces the CDM and its project
cycle, provides an overview of the
global and regional
carbon market, and highlights challenges and opportunities
for the CDM in various sector such as energy, forestry and transport.
An improved
global understanding of nutrient availability would therefore greatly improve
carbon cycle modelling and should become a critical focus
for future research.
Scientists» understanding of the fundamental processes responsible
for global climate change has greatly improved during the last decade, including better representation of
carbon, water, and other biogeochemical
cycles in climate models.
A few noted skepticism of climate science, saying
carbon dioxide is «part of the
cycle of life,» but
for many opponents of the Clean Power Plan, the argument wasn't whether climate change was real but whether the plan's target on reducing emissions from coal power would effectively slow
global warming.
Assuming
for the sake of the argument that this swing was caused by a fall in
global temperatures and using the median
carbon cycle sensitivity value from the Frank et al. recent Nature letter, a 1.03 C
global cooling would be implied.
Human use of biomass
for food, feed, fiber, fuel, and materials has become a primary component of
global biogeochemical
cycles of
carbon, nitrogen, phosphorous, and other nutrients.
To ensure that we «count carbs» accurately, by explaining why we need a comprehensive accounting system
for carbon emissions — one that measures
global warming emissions over a transportation fuel's entire life
cycle.
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.
Examining the greenhouse effect, the
carbon cycle, and what the future may hold
for global climate, this text draws from a wide range of disciplines, and not only summarizes scientific evidence, but also economic and policy issues, related to
global warming.