Sentences with phrase «emissions measurement data»

E.P.A. has not yet had the opportunity to fully review the PNAS study on methane emissions; however we are encouraged that more methane emissions measurement data are now available to the public.

Not exact matches

More accurate distances between the most common type of «planetary nebulae» and the Earth can be estimated simply with three sets of data: firstly, the size of the object on the sky taken from the latest high resolution surveys; secondly, an accurate measurement of how bright the object is in the red hydrogen - alpha emission line; and thirdly, an estimate of the dimming toward the nebula caused by so called interstellar - reddening.

Next week, the heads of 11 space agencies are expected to issue a joint communique from a meeting in New Delhi calling for cooperation to calibrate instruments and validate measurements «to achieve an international, independent system for estimating the global emissions based on internationally accepted data.»

Using statistical methods, they were able to draw conclusions about individual emission sources from the measurement data.

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.

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

The work included data from a variety of sources, including national emissions inventories kept by the United Nations, global estimates of energy use and direct measurements of atmospheric CO2 concentrations, and involved dozens of authors from institutes around the world.

While this number is higher than the previous estimate made in the late 1990s based on ground measurements, the new research includes data on more volcanoes, including some that scientists have never visited, and it is still lower than human emissions of sulfur dioxide pollution levels.

Our models are compared to a suite of observational data for thermal and scattered light emission, ranging from the ALMA radial surface brightness profile at 1.3 mm to polarisation measurements in the visible.

He has now updated his research using data from previous studies that relied on satellite and aircraft measurements of emissions above oil and gas fields.

This is a well - established methodology, pushed to constrain US anthropogenic emissions by including measurements from aircraft and communications towers in addition to the ever - invaluable NOAA flask sample network, and incorporating socioeconomic and industrial data.

The declining signal over India shown by the GPCP decadal mode is broadly consistent with gauge measurements since the 1950s — that several research groups including my own are trying to understand, perhaps relating to emissions of anthropogenic aerosol — although there are discrepancies between these gauge - based data sets themselves (see our recent review in Nature Climate Change, for example).

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.

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.

Another way to phrase the question is «Is there measurements that can be made in our lifetimes (I am 68 years old) that would bring you forward to publicly announce that the climate model - predicted planetary crisis alarm from human emissions was wrong and that the new data indicate that it was a mistake?».

We do not have data on human CH4, N2O and CFC emissions over the period, but we do have published measurements of the atmospheric concentration of each gas.

The paper is based on an analysis of global methane emissions examining almost 20,000 field data measurements collected from 70 sites across Arctic, temperate and tropical regions.

Using SCIAMACHY satellite data as well as ground - based measurements from 2003 to 2009, researchers found that the region where Arizona, New Mexico, Colorado, and Utah intersect had atmospheric methane concentrations equivalent to about 1.3 million pounds of emissions a year.

Unit: List of units of measurement for GHG emissions / removals, activity data, country area, population and GDP.

Although we did not explicitly address the temporal or spatial resolution of emission data from each system, it is notable that the few published acoustic and eddy covariance - based reservoir CH4 flux estimates are quite high compared to the median CH4 flux estimates from less temporally and / or spatially integrated measurement techniques (figure 1).

The ability to hindcast the detailed changes in atmospheric composition over the past decade, particularly the variability of tropospheric O3 and CO, is limited by the availability of measurements and their integration with models and emissions data.

It's true that if you discard all the data on paleo CO2 from ice cores, and you discard modern direct measurements of CO2 in the atmosphere, then you could assume the existence of a natural increase in atmospheric CO2 greater than the fossil fuel emissions.

He doesn't need the complete data to affirm his presupposed beliefs, just as he doesn't need experimental evidence or physical measurements or real - world observations to affirm his belief that humans are heating up the oceans with their CO2 emissions.

Translating across discipline - specific vocabularies was essential to understanding mismatches in estimates of methane emissions from permafrost based on field measurements and on atmospheric data.

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.

And while the Harvard researchers plan to repeat their measurements with data from 2012, even these updated estimates may overstate current emissions.

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.

The Court confirmed that the concept includes «data concerning the medium to long - term consequences of those emissions on the environment, in particular information relating to residues in the environment following application of the product in question, and studies on the measurement of the substance's drift during that application, whether those data come from studies performed entirely or in part in the field or from laboratory or translocation studies» (case C - 442 / 14, paragraph 96).