Sentences with phrase «cumulative emissions since»

The study reports that the developing and least - developed economies — representing 80 percent of humanity — accounted for 73 % of global emissions growth in 2004 but only 41 % of global emissions and only 23 % of global cumulative emissions since the mid-18th century.

Cumulative emissions since 1870 and warming relative to the period 1861 — 80.

We construct an idealised future emissions pathway (dashed; left hand axis) that declines linearly from 2020 to zero in 2055, with cumulative emissions since the start of 2015 ~ 880bn tonnes of CO2.

Looking at just the 2010 numbers, for example, they show that the United States, with its exceptionally large share of the global population of people with incomes above the $ 20 per day development threshold (capacity), as well as the world's largest share of cumulative emissions since 1990 (responsibility), is the nation with the largest share (33.1 percent) of the global RCI.

Mark — What are your thoughts about the analysis by Ramanathan and Feng (PNAS, Sept 17,2008: http://dx.doi.org/10.1073/pnas.0803838105), in which they calculate the committed warming of cumulative emissions since the pre-industrial era as in the region of 2.4 °C (with a confidence interval of 1.4 °C to 4.3 °C), based on calculating the equilibrium temperature if GHG concentrations are held at 2005 levels into the future.

Although the U.S., Europe and other developed countries have contributed 77 percent of the cumulative emissions since the dawn of the Industrial Revolution in the 19th century, developing nations were responsible for 73 percent of the total growth in 2004 alone.

Not exact matches

Cumulative emissions of CO2 since 1870 are set to reach 2015 billion tonnes in 2013 — with 70 per cent caused by burning fossil fuels and 30 per cent from deforestation and other land - use changes.

The United States is the second biggest emitter of carbon dioxide worldwide (and has contributed, with Europe, 52 % of the share of cumulative carbon emissions since industrialization).

Instead, what's important is the cumulative emissions of carbon dioxide (CO2)-- since a single molecule of CO2 can linger in the atmosphere for as long as 1,000 years — emitted since the dawn of the industrial era.

It's a big job, but it's one that has to be done anyway, since if the whole world tries to pull itself into prosperity by burning carbon at the rate the US does, then we run out of coal even at the highest estimates by 2100, and you wind up with no fossil energy and the hellish climate you get from 5000 gigatonnes cumulative emission.

The cap was tightened primarily because actual CO2 emissions in the region since 2009 have been roughly 35 % below the cumulative cap.

Responsibility, by which we mean contribution to the climate problem, is similarly defined as cumulative emissions (since some agreed starting year) excluding emissions that correspond to consumption below the development threshold.

IPCC AR5 summarizes the scientific literature and estimates that cumulative carbon dioxide emissions related to human activities need to be limited to 1 trillion tonnes C (1000 PgC) since the beginning of the industrial revolution if we are to have a likely chance of limiting warming to 2 °C.

Solomon argued a couple of years ago that cumulative carbon emissions are the best way of assessing climate risk, since they avoid problems such as time lags that mess with other measures, such as atmospheric concentrations.

Following these informal discussions, delegates agreed on text stating that limiting the warming caused by anthropogenic CO2 emissions alone with a probability range of greater than 33 %, 50 %, and 66 %, to less than 2ºC since the period 1861 - 1880, will require cumulative CO2 emissions from all anthropogenic sources to stay between 0 and about 1560 GtC, 0 and about 1210 GtC, and 0 and about 1000 GtC.

Regarding text stating that limiting warming from anthropogenic CO2 emissions alone to likely less than 2 °C since 1861 - 1880 requires cumulative emissions to stay below 1000 gigatonnes of carbon (GtC), Saudi Arabia urged using 1850 for consistency, to which the CLAs responded that some model simulations only begin in 1860, which delegates agreed to reflect in a footnote.

Since only half of what we emit «remains» in the atmosphere, this means we would need to reduce CO2 emissions by a cumulative 1,000 Gt..

This ends up changing estimates of cumulative carbon emissions since the pre-industrial period, but given the large uncertainties involved the authors caution against using these revisions to draw conclusions about remaining carbon budgets associated with staying within the 2C or 1.5 C warming targets.

By aggregating savings since 2008, this equates to a cumulative 8,178,000 tonnes of carbon emissions that have been avoided over the entire period.

Since the records show that up to this time the CO2 concentration has not increased «more than linearly with cumulative CO2 emissions» as you state, I'm curious why you think that will be the case in the future.

But interpretation isn't easy, since internal variability and forcings (natural and anthropogenic) other than CO2 can move individual points up and down on the temperature axis without any movement left or right along the cumulative CO2 emissions axis.

But hailing the carbon saved by the US since 2005, while ignoring what it added before that would fail to acknowledge the cumulative nature of the carbon emissions burden on the atmosphere.

=== > The continuous growth of cumulative CO2 emissions over the entire span since 1850 has likely zero correlation with the constant acceleration / deceleration of natural climate temperature trends - CO2's impact on the trends is demonstrably minimal

=== > Finally, as this accompanying chart of the empirical evidence indicates, while the per cent change in cumulative CO2 emissions dropped in a quasi-continuous pattern since 1979, the RSS annual global temperatures anomalies instead follow an opposite increasing trend.

It states that to stand a good chance (a probability of 66 percent or more) of limiting warming to less than 2 °C since the mid-19th century will require cumulative CO2 emissions from all anthropogenic sources to stay under 800 gigatons of carbon.

Since this is a transient response, it is less steep a slope than the cumulative emissions.

Truth n ° 2 57 % of the cumulative anthropic emissions since the beginning of the Industrial revolution have been emitted since 1997, but the temperature has been stable.

The percentage of cumulative emissions might be somewhat different, but that would be quibbling since what matters is what is in the atmosphere.

«37 % of the cumulative anthropic emissions since the beginning of the Industrial revolution have been emitted since 1997,...»» See point (c) above.

Hence we can say that no CO2 effect on the temperatures has been observed since 1978 despite an increase of 263 % of the cumulative anthropic emissions (263 % = 402 Gt - C / 153 Gt - C).

Since CO2 lasts in the atmosphere for a very long time (100's to 1000's of years) it is the total cumulative amount of emissions that matter.

«Per NOAA, Climate Impact of Cumulative CO2 Emissions Since 1880 Approaching Nil Main Climate FactCheck: Is Current Global Ocean Warming Unprecedented?

«UK Climate Agency Confirms: Huge Cumulative CO2 Growth Has Little Impact On Long - Term Climate Change, Warming Main Per NOAA, Climate Impact of Cumulative CO2 Emissions Since 1880 Approaching Nil»

If we assume that fossil fuel emissions increase by 3 % per year, typical of the past decade and of the entire period since 1950, cumulative fossil fuel emissions will reach 10000 Gt C in 118 years.

The U.S. Department of Energy's Carbon Dioxide Information and Analysis Center database pegs cumulative global emissions since 1751 at 1,323 gigatonnes of carbon dioxide (1,450 GtCO2e including methane).

Limiting the warming caused by anthropogenic CO2 emissions alone with a probability of > 33 %, > 50 %, and > 66 % to less than 2 °C since the period 1861 — 1880, will require cumulative CO2 emissions from all anthropogenic sources to stay between 0 and about 1570 GtC (5760 GtCO2), 0 and about 1210 GtC (4440 GtCO2), and 0 and about 1000 GtC (3670 GtCO2) since that period, respectively.

(Go here to view maximum hourly precipitation incidents versus global cumulative CO2 emission tonnes since 1950.)

Cumulative emissions from 1854 to 2010 traced to historic fossil fuel production by the largest investor - owned and state - owned oil, gas, and coal producers, in percent of global industrial CO2 and methane emissions since 1751.

Keeping global average temperatures to 1.4 C would mean cumulative global emissions couldn't exceed around 600bn tonnes of carbon (~ 2,200 bn tonnes of CO2) since pre-industrial times, rather than 850bn tonnes (~ 3,100 bn tonnes of CO2) for 2C, the paper says.