Sentences with phrase «in atmospheric concentration»

Ending emissions starts a decrease in atmospheric concentration of carbon dioxide, and within five years or so, an end to land surface temperature increase.

# 195 — «Ending emissions starts a decrease in atmospheric concentration of carbon dioxide, and within five years or so, an end to land surface temperature increase.»

Cumulative emissions give some indication of who is responsible for the build - up in the atmospheric concentration of greenhouse gases (IEA, 2007, p. 199).

People perceive — correctly — that their individual actions will not make a decisive difference in the atmospheric concentration of CO2; by 2010, a poll found that «while recycling is widespread in America and 73 percent of those polled are paying bills online in order to save paper,» only four percent had reduced their utility use and only three percent had purchased hybrid cars.

Climate model simulations are used to predict how much warming should be expected for any given increase in the atmospheric concentration of carbon dioxide and other greenhouse gases.

Human activities since the beginning of the Industrial Revolution (around 1750) have produced a 40 % increase in the atmospheric concentration of carbon dioxide (CO2), from 280 ppm in 1750 to 406 ppm in early 2017.

Some analysts calculate that to keep carbon emissions at today's rate (ie to keep the rate of increase in atmospheric concentration at today's rate) will cost one to two percent of GNP.

>> Achieving that goal requires reduction in the atmospheric concentration of greenhouse gasses to around 310 ppm of CO2e (from the current value of some 450 ppm CO2e).

As a result, an increase in the atmospheric concentration of carbon dioxide tends to suppress precipitation.»

Since the beginning of the Industrial Revolution (taken as the year 1750), the burning of fossil fuels and extensive clearing of native forests has contributed to a 40 % increase in the atmospheric concentration of carbon dioxide, from 280 ppm in 1750 to 392.6 ppm in 2012.

Scientific confidence of the occurrence of climate change include, for example, that over at least the last 50 years there have been increases in the atmospheric concentration of CO2; increased nitrogen and soot (black carbon) deposition; changes in the surface heat and moisture fluxes over land; increases in lower tropospheric and upper ocean temperatures and ocean heat content; the elevation of sea level; and a large decrease in summer Arctic sea ice coverage and a modest increase in Antarctic sea ice coverage.

It makes for substantial changes in atmospheric concentration that don't seem captured by the ice cores record.

It all depends on how much the sink increases due to the increase in atmospheric concentration.

by Donald C. Morton The coincidence of the current plateau in global surface temperatures with the continuing rise in the atmospheric concentration of carbon dioxide has raised many questions about...

Human activities (primarily, fossil fuel emissions; secondarily, land use changes such as deforestation6) have caused a rapid increase in the atmospheric concentration of greenhouse gases.

The coincidence of the current plateau in global surface temperatures with the continuing rise in the atmospheric concentration of carbon dioxide has raised many questions about the climate models and their forecasts of serious anthropogenic global warming.

Convert change in atmospheric concentration to billions of tons of CO2 (GtCO2).

Based on an extensive literature review, we suggest that (1) climate warming occurs with great uncertainty in the magnitude of the temperature increase; (2) both human activities and natural forces contribute to climate change, but their relative contributions are difficult to quantify; and (3) the dominant role of the increase in the atmospheric concentration of greenhouse gases (including CO2) in the global warming claimed by the Intergovernmental Panel on Climate Change (IPCC) is questioned by the scientific communities because of large uncertainties in the mechanisms of natural factors and anthropogenic activities and in the sources of the increased atmospheric CO2 concentration.

This study is part of a long - term effort to unravel the role that Southern Ocean phytoplankton have played in past changes in the atmospheric concentration of carbon dioxide.

The 40 - 50 % range for the ocean uptake refers to the fast uptake, which occurs mainly in few years or very rapidly in relation to the increase in the atmospheric concentration.

WG1 chapter 6, figure 3 Concentrations of carbon dioxide and oxygen in the atmosphere Atmospheric concentration of a) carbon dioxide in parts per million by volume from Mauna Loa (MLO, light green) and the South Pole (SPO, dark green) and of b) changes in the atmospheric concentration of O2 from the northern hemisphere (ALT, light blue) and the southern hemisphere (CGO, dark blue) relative to a standard value.

This has resulted in an increase in the atmospheric concentration of carbon dioxide from about 280 parts per million (PPM) before the Industrial Revolution to the current level of about 400 PPM.

As I have proven above (link below), fairly conclusively, using a hypothesis scenario, the increase in atmospheric concentration since industrialisation of a whopping 40 % is nearly entirely due to man.

Therefore CO2 increasing in atmospheric concentration.

the increase in atmospheric concentration since industrialisation of a whopping 40 % is nearly entirely due to man

What has been measured is the change in atmospheric concentration (and the C14 sink rate)-- everything else is speculative hypotheses based on models.

If we are 0.4 units error in the man made CO2, and the error in the atmospheric concentration of CO2 is known quite accurately (source)

Consequently an increase in the atmospheric concentration of greenhouse gases from human activities such as burning fossil fuels leads to an enhanced greenhouse effect.

The amount of future warming will depend on changes in the atmospheric concentration of heat - trapping gases.

Therefore warming of the oceans by a degree or two has little influence on the balance (it's compensated by a addition of a few ppm in the atmospheric concentration).

The 39 % increase is in atmospheric concentration since «pre-industrial» times (not emissions).

The equilibrium climate sensitivity (ECS) is a convenient yardstick to measure how sensitively the climate system responds to perturbations in the atmospheric concentration of greenhouse gases such as CO2.

[Response: A small new source is swamped by larger already existing sources, so the relative change in the atmospheric concentration is relatively small.

But I think it at least illustrates the point, which is that, while emissions have indeed been on an accelerating curve, the increase in atmospheric concentration did indeed start back around the beginning of the 19th century — not in the 1950s.

In a printed statement, Pieter Tans of the agency's Earth System Research Laboratory in Boulder, Colo., said the only way to stop growth in the atmospheric concentration of the gases is to reduce emissions enough that natural processes can keep pace.

The largest contribution to total radiative forcing is caused by the increase in the atmospheric concentration of CO2 since 1750.

We know that additional GHGs can not be the cause as there was no discernible increase in the atmospheric concentration from the the pre-industrial period.

The CO2 solubility change due to the increase in ocean temperatures is small compared to the change in the atmospheric concentration.

The continued increase in the atmospheric concentration of carbon dioxide due to anthropogenic emissions is predicted to lead to significant changes in climate1.

However, the health of the entire population pays a high price: substitution of gasoline for ethanol leads to a 30 % increase in the atmospheric concentration of ultrafine particulate matter, which consists of particles with a diameter of less than 50 nanometers (nm).

Despite this, increased production has led to a rapid increase in its atmospheric concentration over the past decade.

At the same time, even if California meets its ambitious target, it may not make a huge dent in the atmospheric concentrations of greenhouse gases causing climate change.

The only way that the oceans will outgas carbon dioxide would be for the water temperature to increase, without an increase in atmospheric concentrations.

Another way of asking the same question is: If there had been a rapid change in atmospheric concentrations of GHGs in the past similar in magnitude and brevity as what we now observe, would we be able to detect it?

CO2 is the food supply for terrestrial life, including humans, and it is benign in atmospheric concentrations, so so far no.

Various mechanisms, involving changes in ocean circulation, changes in atmospheric concentrations of greenhouse gases or haze particles, and changes in snow and ice cover, have been invoked to explain these sudden regional and global transitions.

Only around 50 per cent of the CO2 we emit (the so - called atmospheric fraction) ends up as increase in atmospheric concentrations, with the rest being absorbed by oceans.

Every year the GCP provides an estimate of the global carbon budget, which estimates both the release and uptake of carbon including emissions from fossil fuels and industry, emissions from land - use changes, carbon taken up by the oceans and land, and changes in atmospheric concentrations of CO2.

Is the argument that CO2 levels relate to temperature, and in fact if there were no human emissions then the «environment» would not be a sink and in fact would be a source... as the atmospheric concs are driven by temps and it is just a coincidence that the anthropogenic emissions are greater than the increase in atmospheric concentrations?

They include: (1) a 35 year US delay on climate action has made the problem extraordinarily challenging to solve, (2) US greenhouse gas (ghg) emissions are more than any country responsible for rise in atmospheric concentrations to present dangerous levels, (3) US ghg emissions not only threaten the US with climate disruption but endanger many of the poorest people around the world, (4) the Obama administration's pledge to reduce ghg emissions is far short of the US fair share of safe global emissions.