Sentences with phrase «emissions trends by»

Read / Purchase the Report Policy Options for Reducing Energy Use and Greenhouse Gas Emissions from U.S. Transportation (2011) TRB Special Report 307: Policy Options for Reducing Energy Use and Greenhouse Gas Emissions from U.S. Transportation examines the potential for policies to yield major changes in transportation energy use and emissions trends by policy measures targeting cars and light...

Elisabeth Rosenthal reports Friday on the results of a new analysis of emissions trends by the Dutch government.

Not exact matches

The question now is whether Germany's auto industry — which is behind on the electric trend and has been upended by Volkswagen's emissions scandal — can build an e-vehicle that the nation's drivers actually want to buy, or whether the incentive will end up lining the pockets of foreign companies like Tesla and the Renault - Nissan Alliance.

From 1990 to 2008 the US increased its CO2 emissions by 12 per cent while the EU decreased its by 9 per cent, despite broadly similar economic growth trends (see «Peak planet: Carbon dioxide emissions «-RRB-.

By decreasing emissions, he said we may be able to stabilize rising seas long - term, but the trend will likely be difficult to reverse.

«This represents a direct reduction in emissions from the current trends, because dedicated energy crops will reassimilate some of the carbon dioxide emitted by energy use.»

Global GHG emissions continue to be dominated by fossil carbon dioxide (CO2) emissions, which however show a slowdown trend since 2012, and were stalled for the third year in a row in 2016.

Scientists can confidently say that Earth is warming due to greenhouse gas emissions caused by humans, but data on climate trends over the Antarctic and the surrounding Southern Ocean only go back to 1979 when regular satellite observations began.

The trend worries many local environmental groups, such as California's Surfrider Foundation or Australia's Nature Conservation Council of NSW, which are concerned about protecting nearby ecosystems by safely disposing the concentrated brine left from the process as well as increased fossil - fuel use and the resulting greenhouse gas emissions.

While the ranking of individual years can be affected by chaotic weather patterns, the long - term trends are attributable to drivers of climate change that right now are dominated by human emissions of greenhouse gases,» said GISS Director Gavin Schmidt.

If current emission trends continue, by 2100, CO2 concentration would be higher than the Earth has seen in more than 10 million years.

Our target is estimation of global total methane balances, including emission trends in time and their differentiation by region and emission category, with specific interest on methane emissions from northern wetlands, and transport and chemical sink of methane in the atmosphere.

Top - down estimates of methane emissions from the permafrost region also are highly uncertain, but substantial progress has recently been made by the NASA Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) campaign in quantifying methane budgets and trends in Alaska.

Nonetheless, our sea - level rise projections for the first half of this century are not strongly affected by the way Antarctica is modeled, nor are they strongly tied to global greenhouse gas emissions trends.

Still, a great portion of the «summary for policymakers» deals with the recent temperature rise, and it concludes that it's «likely» that there is a human contribution to the observed trend (by which I assume CO2 emissions are especially understood, even more so considered the negative forcings mentioned).

If current trends continue, the 2.0 - litre TDI Ultra diesel with 187bhp will be by far the most popular engine, thanks to its economy of up to 68.9 mpg and CO2 emissions of 108g / km, for a company - car friendly Benefit - in - Kind (BiK) band of 23 %.

It was feared the V8 petrol engines from both car - makers could have been killed off and replaced by a twin - turbo V6 as part of the general downsizing trend in search of lower emissions, but now thanks to sharing its considerable development costs the well - loved V8 configuration will live on for at least another generation at both Audi and Porsche.

The trend for diesel registrations declining and increases in SUV registrations, combined with rising gasoline registrations, follows the recent news that CO2 emissions increased by 0.3 g / km in 2017.

* Scientists from the Carnegie Institution's Department of Global Ecology have calculated that if current carbon dioxide emission trends continue, by mid-century 98 % of present - day reef habitats will be bathed in water too acidic for reef growth.

but of course we'll be able to control the planet's temperature fluctuations and inconvenient excesses, and precisely guide geohistorical climatic trends over the next decades and centuries by regulating our co2 emissions.

MA: Munshi then ventures briefly into the issue of calibration of satellite data and in so doing, badly misrepresents Nerem et al (2018) and adds a little Victor - the - Trollishness by plotting 25 - year SLR trends against annual FF CO2 emissions.

He seemed to hit his stride from 2008 through 2010, when those fighting efforts to cut greenhouse gas emissions were buoyed by email hacks, the Great Recession, the breakdown of climate talks in Copenhagen and a stutter - step in the global warming trend.

There's a long history of concerns about the validity of the MSU2 / AMSU5 data (aka: the MT), going back to Spencer and Christy's work published in 1992 in which they introduced the TLT (or LT) as a correction for the MT.. It was their claim at the time that the MT is contaminated by emissions from the stratosphere, which has a well known cooling trend.

Is the prevailing opinion that that upward trend is primarily caused by human emissions of greenhouse gases or am I looking at a natural phenomenon that humans are now adding to?

A sobering new analysis of HFC emission trends, published Monday in the Proceedings of the National Academy of Sciences, forecasts that by midcentury, emissions of these chemicals could be heating the atmosphere with the same punch as 7 or 8 billion tons a year of carbon dioxide.

But models are not tuned to the trends in surface temperature, and as Gavin noted before (at least for the GISS model), the aerosol amounts are derived from simulations using emissions data and direct effects determined by changes in concentrations.

At the same time, the trends in China imply that any curbs in emissions in the United States, Europe, Japan and other already - wealthy places won't matter unless the coal tide in Asia can be stemmed by transfers of non-polluting technology.

But temperatures are running so far ahead of those during the last strong El Niño, in 1997 and 1998, that scientists said the records would not be occurring without an underlying trend caused by human emissions of greenhouse gases.

«In a scenario of zeroed CO2 and sulfate aerosol emissions, whether the warming induced by specified constant concentrations of non-CO2 greenhouse gases could slow the CO2 decline following zero emissions or even reverse this trend and cause CO2 to increase over time is assessed.

Nevertheless, if the effects of CO2 emissions can reach the ocean only via the atmosphere as intermediary, we would expect any trends in the atmosphere to be followed by corresponding trends in the ocean, at a distance of: decades.

The importance of population size in gauging emissions trends was raised by Chinese officials here, who noted that their one - child policies reduced births by 400 million and emissions of carbon dioxide by some 18 million tons a year.

The move by the Obama administration is mostly doing what's possible, not what's needed given global emissions trends for carbon dioxide, but is still creditable given the lack of such a step under previous administrations.

Importantly, the study suggests there is a critical window of opportunity to reverse the trend in emissions by halting deforestation and degradation, and actively restoring forests to degraded lands.

CO2 trend 1959 - 2008: increase according to temperature formula: ~ 50 ppmv addition by human emissions: ~ 110 ppmv observed in the atmosphere: ~ 60 ppmv removed by some (unknown) sinks: 100 ppmv

According to us, the trend itself is fully caused by the emissions and the temperature increase 1959 - 2008 results in only a very small increase of CO2, of the same order as the short term influence seen around the trend.

The problem is that you expand this to that temperature is responsible for the current trend, which is caused by something else (emissions), while the sensitivity only holds for the variability around the trend and a (small) part of the trend, depending of the temperature difference between begin and endpoint.

Thus either the trend is caused by the emissions or the trend is caused by the temperature increase, or it is a mix of both.

Global upper - ocean chemistry trends driven by human carbon dioxide emissions are more rapid than variations in the geological past.

The trend is caused by the emissions.

In that case, the trend (baseline) itself is (near) fully caused by the emissions and temperature changes only influence the variability around the trend, not the trend itself.

That is in fact resolved by our formula: The huge influence of temperature on CO2 increase speed still holds, but is limited in time, while the trend itself is completely attributed to the emissions:

They concluded that in a climate being warmed by man - made carbon emissions, «it is possible, and indeed likely, to have a period as long as a decade or two of «cooling» or no warming superimposed on a longer - term warming trend.

The recent strong increase in fossil fuel CO2 emissions is mainly driven by an increase in emissions from coal, whereas emissions from oil and gas to a large degree follow the trend from the 1990s.

One passage written by Heartland reads, «Scientists who study the issue say it is impossible to tell if the recent small warming trend is natural, a continuation of the planet's recovery from the more recent «Little Ice Age,» or unnatural, the result of human greenhouse gas emissions.»

Also, the Greenland ice core data do agree pretty good with sulfate emissions estimates, but Greenland is located downwind of the US and Canada and does not represent global trends impacted by developing countries.

Despite more than one hundred years with man - made carbon emissions, the long term temperature trend has increased by only 1 °C.

The only trend I see in those 161 years is one that correlates beautifully with all estimates of increasing atmospheric CO2 since 1850 assuming that 45 % of emissions (as per CDIAC datasets) is retained in the atmosphere and, with a delay of around 15 years (possibly due to the ocean heatsink, aka Hansen's «pipeline»), heats the surface by 2.8 - 2.9 C for each doubling of atmospheric CO2.

This trend was reinforced by the reciprocal climate deal that China struck with the Obama administration in November, under which China agreed to peak its carbon dioxide emissions by 2030 and put a cap on coal burning by 2020.

But on current emission trends, that could delay the ozone hole's recovery by 30 years, until at least 2095, he suggested.

This is so because the world will need to reduce global greenhouse gas emissions from current levels by 80 % or greater by the middle of this century to prevent catastrophic climate change as greenhouse gas emissions increase world wide increase at 2 % per year under current trends.