Sentences with phrase «emission measurements which»

Data from SUVI will provide an estimation of coronal plasma temperatures and emission measurements which are important to space weather forecasting.

Not exact matches

The study is the second phase of the team's 2013 study, which included some of the first measurements for methane emissions taken directly at hydraulically fractured well sites.

It has been especially pro-active around the mitigation of carbon emissions and last year, along with the International Tourism Partnership (ITP) and 12 major hotel chains including Hilton, Hyatt, Marriott and Starwood, launched the Hotel Carbon Measurement Initiative, which aims to help hotels reduce, measure and communicate their carbon footprints.

Pourhashem noted the key measurements needed are the rate of soil emission of nitric oxide (NO), which is a smog precursor, after biochar is applied to fields.

In the new paper, published in the journal Environmental Research Letters, Höglund - Isaksson estimated global methane emissions from oil and gas systems in over 100 countries over a 32 - year period, using a variety of country - specific data ranging from reported volumes of associated gas to satellite imagery that can show flaring, as well as atmospheric measurements of ethane, a gas which is released along with methane and easier to link more directly to oil and gas activities.

From his measurements, he calculates that the emissions have already increased to 620 metric tons in 2008, which is about 16 percent of the 4,000 metric tons that Prather estimates will be produced and used this year.

As NOAA's Mauna Loa measurement of atmospheric methane concentrations are only currently increasing at a rate of approximately 0.25 % per year (or 12.5 % change in 50 - years); how could anyone be concerned that the change in atmospheric methane burden in 50 - years could be 300 % (as per Isaken et al (2011) case 4XCH4; which would require an additional 0.80 GtCH4 / yr of methane emissions on top of the current rate of methane emissions of 0.54 GtCH4 / yr)?

We are not ready to go on the record with the results — the comparison shows no substantive differences between to - down and bottom up measurements — which means the underlying emissions factors can't be too far off.

Scientists» measurements, over the last 30 years or so, seem to reflect a steady increase in CO2 emissions, which seem to be causing both a rise in temperature and change in ocean ph toward acidity.

CO2 measurements are suspect «The Keeling curve, which is widely used to show the increase in CO2 emissions, is based on data from the top of Mount Mauna Loa in Hawaii.

When spring thaw emissions were combined with growing season emissions, the conventional tillage system actually had higher total nitrous oxide emissions than the zero till system.We suggest that this type of experiment (full year emission measurements) be repeated with deep banding of N fertilizer, which would be expected to further reduce emissions from zero till systems.

Volcanoes put out only a very small amount of CO2 in comparison to our emissions, which is why CO2 levels were (using accepted measurements, not Beck's nutty ones) quite constant for the last ~ 10,000 years... and haven't been above ~ 300ppm in at least the last 750,000 years.

«In addition, we are currently developing a method that also allows for high - precision hydrogen isotopic measurements on methane in ice cores, which will further improve our emission flux constraints,» revealed Fischer.

In your case, the ice cores must be wrong, in my case, there is no problem with ice core CO2 (neither with historical CO2 levels over the oceans), as the 0.3 K temperature increase in the period 1900 - 1950 causes an increase of about 0.9 ppmv CO2, which is within the accuracy of the ice core measurements, the rest of the observed increase is due to human emissions.

The Trump administration has killed NASA's Carbon Monitoring System, which was responsible for compiling data from separate satellite and aircraft measurements of CO2 and methane emission across the Earth.

In addition to that the lacking warming during the recent 15 years can not be explained by any change of CO2 content in the atmosphere, there are evidences available according to which the changes of CO2 contents in the atmosphere are dominated by natural causes, where influence of anthropogenic CO2 emissions is so minimal that it can not be found by measurements in reality.

Perhaps (though I doubt it) Armagh's old measurements are wrong or perhaps there are now other factors, such as CO2 emissions, which may change things somewhat.

The statement that only 55 % of human CO2 emissions have been removed by the biosphere / biosphere is something you'll have to prove, which is hard because as far as I'm aware human CO2 does not posses an isotopic signature that can be easily differentiated from natural sources — the arguments you often hear on Skeptical Science are measurements in changes of the C12 / C13 / C14 atmospheric mass, not individual CO2 molecules, which can be misleading.

Then show me where I can understand the extent to which human emissions have increased the levels with an accuracy of some confidence in the measurement.

Our members have a long track record of working with businesses all over the world to develop and implement high quality carbon management programmes which include measurement of carbon footprints, and reducing and offsetting emissions.

4) As there are too many parameters and fudge factors lets start from the observations which are only four datasets: (1) Anthropic emissions (figure 17 - E), (2) their time varying delta13C (not shown), (3) CO2 content of the air (since 1958)(figure 4 - A for the 12 months increments) and (4) delta13C of the air (continuous times series since about 1977 with some measurements before figure 3 - A).

ICROA members have a long track record of working with businesses all over the world to develop and implement high quality carbon management programmes which include measurement of carbon footprints, and reducing and offsetting emissions.

A longtime NGO observer, Silva - Chavez now runs the Forest Trends REDDX initiative, which tracks carbon finance — finance that depends on accurate measurements of greenhouse - gas emissions and reductions, as well as rigorous tracking of international carbon transfers.

We validated parameterization of the model diffusivity using CH4 and three halocarbon species (CFC11, CFC113, and CCl4) for which atmospheric histories have been estimated from emission scenarios and real - time measurements (60 — 62).

Emissivities were evaluated experimentally based on direct measurement of total emission for a number of gases including CO2 and water vapour; these gases absorbed in certain regions of the IR spectrum and this was the data which was used.

A.D. 1700...» which are at variance with multiple direct CO2 ice core measurements from Greenland and Antarctica, and there wasn't significant anthropogenic industrial fossil fuel consumption and CO2 emissions at those dates.

If as you claim, their theory contained no sinks, the 660 Gt (or whatever) natural emissions would have appeared in Keeling's measurements which show only a fraction of that rate of rise.

She leads WRI's Measurement and Performance Tracking Project, which builds capacity in developing countries to create and enhance systems that track emissions reductions associated with low - carbon development goals.

The climate feedbacks involved with these changes, which are key in understanding the climate system as a whole, include: + the importance of aerosol absorption on climate + the impact of aerosol deposition which affects biology and, hence, emissions of aerosols and aerosol precursors via organic nitrogen, organic phosphorus and iron fertilization + the importance of land use and land use changes on natural and anthropogenic aerosol sources + the SOA sources and impact on climate, with special attention on the impact human activities have on natural SOA formation In order to quantitatively answer such questions I perform simulations of the past, present and future atmospheres, and make comparisons with measurements and remote sensing data, all of which help understand, evaluate and improve the model's parameterizations and performance, and our understanding of the Earth system.