Sentences with phrase «studying atmospheric gases»

Not exact matches

Study co-author Professor Martyn Chipperfield, from the University of Leeds» School of Earth and Environment, said: «We need to continue monitoring the atmospheric abundance of this gas and determine its sources.

GREENHOUSE GASSED In a long - running field experiment in Minnesota, scientists are studying the effects of rising atmospheric carbon dioxide levels on plots of grassland.

A new study by Suzanne Baldwin, the Michael G. and Susan T. Thonis Professor of Earth Sciences, and Jayeshkumar Das, a research associate of Earth sciences, brings insight to how atmospheric noble gases, in particular argon and neon, cycle from the surface to the Earth's mantle, and back to the surface again.

But advances in the understanding of atmospheric oxygen levels are challenging that idea, explains Sandra Schachat, a paleoentomologist at Stanford University, who led a recent study that modeled the gas's availability during the hexapod gap.

But Zahnle, an expert on atmospheric escape of gases, agrees with the main thrust of the study: Right now, dust storms are helping to bleed Mars dry.

The study shows, with 90 percent confidence, that such extreme summers in Australia are five times more likely due to an increase in greenhouse gases, said paper co-author David Karoly, an atmospheric scientist at the University of Melbourne and the Australian Research Council Center of Excellence for Climate System Science.

The takeaway is that if humanity stopped cranking out greenhouse gases immediately, sea levels would still rise for centuries before the heat dissipates through Earth's atmosphere and into space, says study co-author Susan Solomon, an atmospheric scientist at MIT.

Astronomer Matt Mountain, director of the new Gemini Telescope in Hawaii, says this future generation of gargantuan earthbound telescopes would make it possible to study individual stars in some of the earliest galaxies or determine the atmospheric gases of distant planets.

A surprising recent rise in atmospheric methane likely stems from wetland emissions, suggesting that much more of the potent greenhouse gas will be pumped into the atmosphere as northern wetlands continue to thaw and tropical ones to warm, according to a new international study led by a University of Guelph researcher.

Using published data from the circumpolar arctic, their own new field observations of Siberian permafrost and thermokarsts, radiocarbon dating, atmospheric modeling, and spatial analyses, the research team studied how thawing permafrost is affecting climate change and greenhouse gas emissions.

Peacock, of the National Center for Atmospheric Research in Boulder, Colo., usually studies how the ocean's water absorbs atmospheric gases.

«We're trying to figure out how to deal with the greenhouse gas problem» says Sarah Doherty, an atmospheric scientist at the University of Washington in Seattle and co-author of the study.

Detlev Helmig, an atmospheric chemist and group leader at the Institute of Arctic and Alpine Research laboratory at the University of Colorado, Boulder, has spent 10 years studying the strange ups and downs of gases in the atmosphere.

«If we want natural gas to be the cleanest fossil fuel source, methane emissions have to be reduced,» says Gabrielle Pétron, an atmospheric scientist at NOAA and at the University of Colorado in Boulder, and first author on the study, currently in press at the Journal of Geophysical Research.

According to two studies published late last year, atmospheric levels of other, more potent gases that also affect climate are on the rise.

The study calculated the likely effect of increasing atmospheric levels of greenhouse gases above pre-industrialisation amounts.

Understanding the smallest gas exoplanets — theoretical and observational studies of their atmospheric properties

The overall goal is to study how Mars loses its atmospheric gas to space, and the role this process has played in changing the Martian climate over time.

The preliminary results of this study have been on our website since the time the flooding happened, but now we have looked not only at the rainfall, but also the influence of anthropogenic greenhouse gas emissions on the atmospheric circulation and how this propagates from rainfall, to river flow down to the direct impact of flooded houses in the river catchment zones.

IFE's Low Pressure Loop is used for studying 2 - and 3 - phase multiphase gas - liquid - particle flow in near horizontal pipes or in a rectangular channel, at atmospheric pressure.

A 2008 study led by James Hansen found that climate sensitivity to «fast feedback processes» is 3 °C, but when accounting for longer - term feedbacks (such as ice sheet disintegration, vegetation migration, and greenhouse gas release from soils, tundra or ocean), if atmospheric CO2 remains at the doubled level, the sensitivity increases to 6 °C based on paleoclimatic (historical climate) data.

They studied the planet when it crossed in front of its host star to observe the star's light as it was filtered through the planet's atmosphere, which provided clues on its mix of atmospheric gases.

Study led by researchers from the CNRS, the University Grenoble Alpes, found out that atmospheric CO2 levels fluctuate seasonally as vegetation takes up the gas through leaves to produce biomass.

Finnish Meteorological Institute has participated in a new study that shows that the atmospheric pollutant mercury shows similar seasonality as the greenhouse gas CO2.

The study shows that during drilling, as much as 34 grams of methane per second were spewing into the air from seven natural gas well pads in southwest Pennsylvania — up to 1,000 times the EPA estimate for methane emissions during drilling, Purdue atmospheric chemistry professor and study lead author Paul Shepson said in a statement.

In one study, Mao and colleagues subjected a mixture of hydrogen and water to a pressure of about 220 megapascals (2,000 times atmospheric pressure) at room temperature (300 K or 80 °F), which formed a clathrate hydrate — a cage - like framework of water molecules enclosing molecules of gas.

We find (i) measurements at all scales show that official inventories consistently underestimate actual CH4 [methane] emissions, with the natural gas and oil sectors as important contributors; (ii) many independent experiments suggest that a small number of «super-emitters» could be responsible for a large fraction of leakage; (iii) recent regional atmospheric studies with very high emissions rates are unlikely to be representative of typical natural gas system leakage rates; and (iv) assessments using 100 - year impact indicators show system - wide leakage is unlikely to be large enough to negate climate benefits of coal - to - natural gas substitution.

Such study will require multiple year - round exploration campaigns, including drilling of sub-sea permafrost to evaluate the sediment CH4 potential and comprehensive atmospheric measurements to assess the ESAS strength as a greenhouse gas source.

Insert, 10:08 p.m. Paul Shepson, the study's lead author and an atmospheric chemist at Purdue, said Derry's concern that the team was measuring coalbed methane coming from somewhere other than the gas wells was unfounded.

New Study Finds Most Of Earth's Oxygen Used For Complaining SEATTLE — Following a multiyear study of atmospheric gases and their role in organic processes on earth, a team of researchers at the University of Washington reported this week that the majority of the oxygen on the planet is used for complaiStudy Finds Most Of Earth's Oxygen Used For Complaining SEATTLE — Following a multiyear study of atmospheric gases and their role in organic processes on earth, a team of researchers at the University of Washington reported this week that the majority of the oxygen on the planet is used for complaistudy of atmospheric gases and their role in organic processes on earth, a team of researchers at the University of Washington reported this week that the majority of the oxygen on the planet is used for complaining.

Permafrost, described in the study as «a vast and cost - free warehouse» for greenhouse gases, is thawing: as it melts, it could double the current levels of atmospheric carbon and feed back into ever - faster climate change.

This thesis presents the results of several general circulation model simulations aimed at studying the effect of ocean circulation changes when they occur in conjunction with increased atmospheric trace gas concentrations.

«Climate models consider anthropogenic forcings like greenhouse gases and tiny atmospheric particles known as aerosols, but they can not study a specific climate event like the current hiatus,» said Yu Kosaka, co-author of the Nature paper.

A study surveying «leaky valves and pipes in the rapidly growing natural gas industry» observed 50 % more methane leakage than expected, but the extra atmospheric contribution still causes less global warming than coal.

This evidence includes multiple finger - print and attribution studies, strong correlations between fossil fuel use and increases in atmospheric greenhouse gas concentrations, carbon isotope evidence that is supports that elevated carbon dioxide concentrations in the atmosphere are from fossil sources, and model predictions that best fit actual observed greenhouse gas concentrations that support human activities as the source of atmospheric concentrations.

«On the global scale, greenhouse gases like carbon dioxide cause the most concern related to climate change,» said Yun Qian, study co-author and atmospheric scientist at Pacific Northwest National Lab in the US.

Variations of atmospheric trace gases are studied using inverse models to understand surface sources and sinks, especially in relation to the «missing sink» of carbon dioxide.

Never — in all the mathematics I studied and used — did any mathematical formula ever calculate temperature of some gas or atmospheric mix then have to refer to a» green house effect» because the laws of

For instance, US politicians frequently assert that it is an open question whether humans are causing the undeniable warming that the Earth is experiencing, thus exposing ignorance of dozens of lines of independent robust evidence of human causation including attribution studies, finger print analyses, strong evidence that correlates fossil fuel use to rising atmospheric concentrations of greenhouse gases, and other physical and chemical evidence.

Studies that model natural gas as a bridge, such as one conducted by Michael Levi of the Council on Foreign Relations, find it could help stabilize atmospheric CO2 concentrations.

In three years, the study has provided the most comprehensive report on atmospheric trace gases, covering the full troposphere in all seasons and multiple years.

Barnett et al. «Penetration of Human - Induced Warming into the World's Oceans» (Science, Vol 309, Issue 5732, 284 - 287, 8 July 2005) «A new study has found a «compelling agreement» between observed changes in ocean temperatures since 1960 and the changes simulated by two climate models under rising atmospheric concentrations of greenhouse gases.

AER scientists contributed atmospheric transport modeling and research expertise to the new study by Harvard University, which is «the first of its kind to quantify methane emissions from natural gas leaks in an urban area».

«A study published in 2011 in Geophysical Research Letters on causes of the 2010 Russian heat wave deduced that it «was due to internal atmospheric dynamical processes» — Paging Al Gore: Peer - reviewed Study: «It is unlikely that the warming attributable to increasing greenhouse gas concentrations contributed significantly to the magnitude of the [Russian] heat wave&rstudy published in 2011 in Geophysical Research Letters on causes of the 2010 Russian heat wave deduced that it «was due to internal atmospheric dynamical processes» — Paging Al Gore: Peer - reviewed Study: «It is unlikely that the warming attributable to increasing greenhouse gas concentrations contributed significantly to the magnitude of the [Russian] heat wave&rStudy: «It is unlikely that the warming attributable to increasing greenhouse gas concentrations contributed significantly to the magnitude of the [Russian] heat wave»

New NASA research is one of the first studies to estimate how much and how quickly the ocean absorbs atmospheric gases and contrast it with the efficiency of heat absorption.

At the heart of both studies is a deeper concern about the response of the natural world to human - induced change, in the destruction of habitat, the loss of the plants, birds, insects, mammals, amphibians and reptiles that depend on habitat, and in the steady increase in atmospheric levels of greenhouse gases, as a consequence of profligate combustion of fossil fuels.

This parallels a recent NOAA study of atmospheric methane measurements that found that «methane emissions from natural gas as a fraction of production have declined from approximately 8 per cent to approximately 2 per cent over the past three decades» — with production soaring in recent years.

For the authors of the paper to assess the spectral results against theory they needed to know the atmospheric profile of temperature and humidity, as well as changes in the well - studied trace gases like CO2 and methane.

Records studied by paleoclimatologists reveal that the more extreme possibilities for this century and beyond — temperatures soaring, ice sheets vanishing, fertile lands withering into deserts — were realized previously on Earth when atmospheric greenhouse gas levels surged.

The baseline for atmospheric methane used in the study is just under two parts per million — a figure accepted by most experts as well within the range of naturally occurring gas levels.