Sentences with phrase «different emissions sources»

It quantifies black carbon emissions, providing improved understanding of the relative importance of different emissions sources.

Modeled carbon isotope curves (CIEs) for 3 different emissions sources over 4 different emission timeframes.

Not exact matches

Instead, with the imposition of a cap - and - trade program, O'Connor said, people looked at the sources of coal and realized they could obtain it from different parts of the country with lower sulfur, cutting emissions at less cost.

The groups used different statistical approaches to subtract out the gamma - ray emission from normal astrophysical sources such as pulsars and supernovae to hunt for a dark matter signal, and each arrived at the same conclusion — that any gamma - ray light coming from dark matter must be generated by a relatively heavy particle.

A surprising discovery: The water vapor emissions from the comet are significantly different from the stores on our planet, suggesting that asteroids, not comets, may have been the main source of Earth's water.

The 64 - foot vessel has an advanced power management system that regulates when and how the different power sources are used so it can make best use of its energy and minimize emissions.

Indeed, using different official sources of activity data and emissions factors can result in estimates that vary by up to 40 per cent in a given year.

In order to trade properly you have to have an agreed basis for measuring carbon emissions, which can come from very different sources such as agriculture, transport or industry.

Professor Rob Lamb of the JBA Trust and Lancaster University said: «Each of these steps reflects different sources of uncertainty, but we find overall that there is a substantial chance of more properties having been placed at flood risk because of past greenhouse gas emissions, leading to potential damages that could be part of the losses incurred in 2013/14.»

Statistical arguments must be used in many cases, but the velocities of the gas, when compared with the velocities found for stars and those anticipated on the basis of the dynamics of the Galaxy, provide useful clues as to the location of the different sources of hydrogen radio emission.

Kyoto has long been seen as a dead end, given that, for different reasons, both China and the United States, the world's dominant sources of greenhouse - gas emissions, are not bound by the pact.

There are many different techniques for separating CO2 from industrial emissions sources (see chart below and this startup that promises significant cost savings in CO2 separation).

Today's research uses the embedded energy numbers to work out the lifecycle greenhouse gas emissions of different sources of electricity.

Top - down and bottom - up estimates that use only one of these data sources often arrive at very different CH4 totals, and they extrapolate emissions over time and space in ways that are difficult to compare.

This technical document provides the following information: - An update of global greenhouse gas emission estimates, based on a number of different authoritative scientific sources; - An overview of national emission levels, both current (2010) and projected (2020) consistent with current pledges and other commitments; - An estimate of the level of global emissions consistent with the two degree target in 2020, 2030 and 2050; - An update of the assessment of the «emissions gap» for 2020; - A review of selected examples of the rapid progress being made in different parts of the world to implement policies already leading to substantial emission reductions and how they can be scaled up and replicated in other countries, with the view to bridging the emissions gap.

and colleagues, comprehensively measures the lifecycle energy use and greenhouse gas emissions of different sources of electricity, between now and 2050.

Equally, the calculations don't include the environmental costs of the different energy sources — like those related to greenhouse gas emissions.

In the case of RCPs, the initial idea was to posit just an emission trajectory, which could potentially be produced by a variety of socioeconomic developments (higher or lower pop growth, higher or lower GDP growth, different combinations of energy sources).

Combining actual emissions has been difficult because different sources of emissions have been located far from each other.

In addition, studies rely upon different data sources both for historical emissions as well as projected emissions (which is particularly relevant to the analysis of uncovered sectors and gases, as well as countries that have not submitted an INDC).

In the analysis, Dr. Hansen and his colleagues culled data and scientific papers on topics from rice production, which releases methane, to urban pollution, a source of ozone and sooty particles, to obtain detailed estimates of the rate of change in different greenhouse emissions.

«When you have eight or nine or 10 different sources of methane, each with a range of ratios, there is no way to calculate where it is coming from,» said Robert Howarth, a Cornell University professor who studies methane emissions.

The difference arises because the sources of the different types of emissions are, to an important degree, not the same.

Global greenhouse gas emissions under different scenarios and the emissions gap in 2030 (Source: The UNEP)

Thus, total emissions are likely not increasing but partitioning among the different sources may have changed (see Section 2.3).

We would also strongly encourage a common conversation among reporting authorities for national - level energy and emissions data regarding potential avenues for harmonization of standards to aid in the comparability of estimates from different data reporting sources.

Emission metrics such as Global Warming Potential (GWP) and Global Temperature change Potential (GTP) can be used to quantify and communicate the relative and absolute contributions to climate change of emissions of different substances, and of emissions from regions / countries or sources / sectors.

Studying the tax code's impact on GHG emissions the panel will necessarily focus heavily on energy, both the life cycles of different energy sources and their uses in different sectors such as electricity generation, transportation, industrial processes, and consumer uses (including in households).

UPDATE: Clarified flight carbon emissions as being round trip and per person; in doing so came across a variety of figures from different sources, some of which are nearly half the figure I ultimately listed.

And in late June, 91 leading scientists signed a letter urging the U.S. Environmental Protection Agency to distinguish between different biomass sources as it drafts new carbon emission rules.