Sentences with phrase «total atmospheric carbon»

Knowing that the total atmospheric carbon level is about 750 Gt, we can calculate the residency time of CO2 in the atmosphere, before it falls into a non-biotic sink.

The chart below shows what happens to total atmospheric carbon dioxide concentrations if these scenarios were played out over the centuries ahead.

This compares with total atmospheric carbon of 750Gt.

Not exact matches

The seven - day rainfall total from Harvey was as much as 40 percent higher than rainfall from a similar storm would have been decades ago, before human activity caused atmospheric carbon dioxide levels to spike, according to a study published yesterday in Geophysical Research Letters.

Although scientists have measured atmospheric CO2 levels for decades, the current network of ground stations, observatories, aircraft and other instruments emerged during an era when researchers were trying to answer questions about the total amount of carbon dioxide in the atmosphere.

The total amount of carbon that would need to be diverted from being emitted into the atmosphere is stunning: Current global atmospheric CO2 emissions total roughly 30 gigatons, or 30 billion metric tons per year.

The absolutely essential first step in reducing the atmospheric concentration to 350 ppm is a total global cessation of anthropogenic carbon emissions.

While volcanoes contribute only about 1 percent of the total global carbon dioxide emitted, they provide a direct link between underground reservoirs of carbon in the mantle and atmospheric carbon dioxide.

The uptake is about 2.5 % of the total amount of «excess» or «disequilibrium» atmospheric carbon.

The total human contribution to atmospheric carbon dioxide since the start of the industrial revolution has been estimated at about 25 % [6].

A basic question that confuses me (and I admit I haven't read the referenced papers or the latest posts here): why is the total emitted carbon (CO2) the key parameter and not the atmospheric concentration?

NOTE: The top two scenarios estimate an atmospheric CO2 level which exceeds the total carbon contained in all the optimistically estimated fossil fuel reserves on our planet (although here I will mention that Pekka Pirilä has found a study, which give higher potential fiossil fuel reserves than the studies, which I cited).

John Carter August 8, 2014 at 12:58 am chooses to state his position on the greenhouse effect in the following 134 word sentence: «But given the [1] basics of the greenhouse effect, the fact that with just a very small percentage of greenhouse gas molecules in the air this effect keeps the earth about 55 - 60 degrees warmer than it would otherwise be, and the fact that through easily recognizable if [2] inadvertent growing patterns we have at this point probably at least [3] doubled the total collective amount in heat absorption and re-radiation capacity of long lived atmospheric greenhouse gases (nearly doubling total that of the [4] leading one, carbon dioxide, in the modern era), to [5] levels not collectively seen on earth in several million years — levels that well predated the present ice age and extensive earth surface ice conditions — it goes [6] against basic physics and basic geologic science to not be «predisposed» to the idea that this would ultimately impact climate.»

Carbon isotope data (obtainable in biological materials such as tree rings that can extend back long before the atomic bomb explosion in 1945) demonstrates that atmospheric CO2 has exhibited a reduction in the C14 / C12 ratio commensurate with a rise in total CO2 concentration to an extent indicating that the additional carbon coming from any postulated unidentified source (e.g., outside of deforestation) must have been lacking in C14.

Solomon argues that «long - term temperature change remains primarily associated with total cumulative carbon emissions, owing to [their] much longer atmospheric residence time.»

Wolf, J., O'Neill, N.R.Rogers, C.A., M. L. Muilenberg, and L. H. Ziska, 2010: Elevated atmospheric carbon dioxide concentrations amplify Alternaria alternata sporulation and total antigen production.

This video provides a sense of scale for atmospheric pollution — both in total emissions and the rate of emission — by showing what the 54 million metric tons of carbon dioxide that New York City added to the atmosphere in 2010 would look like.

Do the fit yourself, all you need are the total levels of atmospheric carbon (about 750 Gt in 2006) and the human emissions since 1750 and fit the line shape of Keelings curves using as many boxes as you want.

Note that the gross amounts of carbon annually exchanged between the ocean and atmosphere, and between the land and atmosphere, represent a sizeable fraction of the atmospheric CO2 content and are many times larger than the total anthropogenic CO2 input.

Recognizing that the carbon cycle is very complex, so there are reasons that the simple comparison could be off (going either way of course), the chart suggests that only 20 % of the total anthropogenic CO2 emissions occurred in the same period where 50 % of the total change in atmospheric CO2 concentration were observed.

Now, for no temperature change, one would have a preindustrial equilibrium of 450/1450 (atmospheric carbon over total carbon).

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 higher the total, or cumulative, carbon emitted and the resulting atmospheric concentration, the higher the peak warming that will be experienced and the longer the duration of that warming.

By dividing the total temperature change (as indicated by the best - fit linear trend) by the observed rise in atmospheric carbon dioxide content, and then applying that relationship to a doubling of the carbon dioxide content, Loehle arrives at an estimate of the earth's transient climate sensitivity — transient, in the sense that at the time of CO2 doubling, the earth has yet to reach a state of equilibrium and some warming is still to come.

ACIA, in this graphic, manage to present virtually a perpendicular change which gives the impression of being about 500 % over «background» levels and fitted neatly to a representation of the infamous «hockey stick» graph when in fact the total change in atmospheric carbon dioxide is under 35 %.

This video provides a sense of scale for atmospheric pollution — both in total emissions and the rate of emission — by showing what the 54 million metric tons of carbon dioxide that New York City added to the atmosphere -LSB-...]

For example, the direct radiative effect of a mass of methane is about 84 times stronger than the same mass of carbon dioxide over a 20 - year time frame [22] but it is present in much smaller concentrations so that its total direct radiative effect is smaller, in part due to its shorter atmospheric lifetime.

We then applied these rates to the well - known industrial - era history of atmospheric anthropogenic carbon to determine the evolution of the total amount and distribution of oceanic anthropogenic carbon.