Sentences with phrase «atmospheric change on»

Couture, J.J. et al. (2015) Insect herbivory alters impact of atmospheric change on northern temperate forests, Nature Plants, 10.1038 / nplants.2015.16

In July, the Office of Naval Research made a survey in the waters off Virginia Beach, Virginia using ScanEagle UAVs to study the effect of oceanic and atmospheric changes on radar and radio waves, with the aim of improving military communications and the ability of radar to detect hostile craft..

Not exact matches

Sweltering summertime heat waves are on the rise across the Northern Hemisphere because of atmospheric changes brought on by Arctic warming, new research shows.

They used this data compilation to evaluate the quality of their regional atmospheric climate model, based on global climate projections that included several scenarios of anticipated climate change.

The indirect effects of rising atmospheric carbon dioxide (CO2) levels, such as changes in soil moisture and plant structure, can have a bigger impact on ecosystems than previously thought.

«We now have an independent measurement of these emission sources that does not rely on what was known or thought known,» said Chris McLinden, an atmospheric scientist with Environment and Climate Change Canada in Toronto and lead author of the study published this week in Nature Geosciences.

The event commemorates the 5 November 1965 President's Council of Advisors on Science and Technology (PCAST) report to President Lyndon B. Johnson, which warned that the accumulation of atmospheric carbon dioxide from the burning of fossil fuels would «almost certainly cause significant changes» to the environment.

In addition to ignoring the long - term outlook, he says, many skeptics also fail to mention the potentially most harmful outcome of rising atmospheric CO2 on vegetation: climate change itself.

Climate change's negative effects on plants will likely outweigh any gains from elevated atmospheric carbon dioxide levels

And by carefully measuring and modeling the resulting changes in atmospheric composition, scientists could improve their estimate of how sensitive Earth's climate is to CO2, said lead author Joyce Penner, a professor of atmospheric science at the University of Michigan whose work focuses on improving global climate models and their ability to model the interplay between clouds and aerosol particles.

«It's one of the clearest examples of how humans are actually changing the intensity of storm processes on Earth through the emission of particulates from combustion,» said Joel Thornton, an atmospheric scientist at the University of Washington in Seattle and lead author of the new study in Geophysical Research Letters, a journal of the American Geophysical Union.

«It gives further evidence of the close links between atmospheric CO2 and temperature, but also shows how heterogeneous this climate change may be on land,» he adds.

The future impacts of anthropogenic global change on marine ecosystems are highly uncertain, but insights can be gained from past intervals of high atmospheric carbon dioxide partial pressure.

During the PETM, atmospheric carbon dioxide more than doubled and global temperatures rose by 5 degrees Celsius, an increase that is comparable with the change that may occur by later next century on modern Earth.

«But on top of that, changes in atmospheric circulation can favor particular weather conditions associated with heat waves.»

Robert Watson, an atmospheric chemist at the University of East Anglia in the United Kindgdom, is being honored for his studies of the ozone hole and work toward an international agreement to ban the use of the chemicals causing ozone depletion; he later chaired the Intergovernmental Panel on Climate Change.

As the balloon rises in altitude, the change in atmospheric pressure on the balloon also changes, and the pressure waves are larger than infrasound waves.

From a quarter to half of Earth's vegetated lands has shown significant greening over the last 35 years largely due to rising levels of atmospheric carbon dioxide, according to a new study published in the journal Nature Climate Change on April 25.

Modern observatories use «adaptive optics» — computer - controlled deformable mirrors that change shape thousands of times per second — to cancel out the worst effects of atmospheric turbulence on starlight.

The global climate models assessed by the Intergovernmental Panel on Climate Change (IPCC), which are used to project global and regional climate change, are coarse resolution models based on a roughly 100 - kilometer or 62 - mile grid, to simulate ocean and atmospheric dynChange (IPCC), which are used to project global and regional climate change, are coarse resolution models based on a roughly 100 - kilometer or 62 - mile grid, to simulate ocean and atmospheric dynchange, are coarse resolution models based on a roughly 100 - kilometer or 62 - mile grid, to simulate ocean and atmospheric dynamics.

The first explanation is based on global climate change: Scientists have shown that atmospheric carbon dioxide levels declined steadily since the beginning of the Cenozoic Era, 66 million years ago.

For their scenario calculations, the AWI modellers plugged in atmospheric CO2 concentrations in excess of 500 ppm, a level in keeping with the forecasts released by the Intergovernmental Panel on Climate Change (IPCC).

The model also accounted for natural drivers of change, including the direct influence of increased carbon dioxide on ocean - carbon uptake and the indirect effect that a changing climate has on the physical state of the ocean and its relationship to atmospheric carbon dioxide.

But our paper is unique, in that we use these trends to infer changes in the desert expanse on the century timescale,» said Natalie Thomas, a graduate student in atmospheric and oceanic science at UMD and lead author of the research paper.

El Niño is a key factor in making hurricane seasonal forecasts because the changes in atmospheric patterns over the tropical Pacific that it ushers in have a domino effect on patterns over the Atlantic, tending to suppress hurricane formation.

In the field of planetary and atmospheric sensing, linear arrays capable of simultaneously measuring height - resolved spectral features would have a major impact on issues such as climate change and ozone chemistry,» explains Peter de Maagt, ESA's project manager for Star Tiger.

The World Energy Outlook suggests that unambitious pledges made at last year's United Nations Framework Convention on Climate Change conference in Copenhagen will mean that much tougher action is needed after 2020 if the world is to meet the goal of limiting atmospheric carbon dioxide (CO2) to 450 parts per million (p.p.m.).

«A lot of what NOAA and Nasa do right now is focused on measuring the Earth's climate and atmospheric effects of climate change,» he tells Chemistry World.

«This is going to be a sea change in our understanding,» says Lynn Russell, an atmospheric scientist at the Scripps Institution of Oceanography in La Jolla, California, and a co-principal investigator on AWARE.

New evidence showing the level of atmospheric CO2 millions of years ago supports recent climate change predications from the Intergovernmental Panel on Climate Change (change predications from the Intergovernmental Panel on Climate Change (Change (IPCC).

For the study, Gentine and Lemordant took Earth system models with decoupled surface (vegetation physiology) and atmospheric (radiative) CO2 responses and used a multi-model statistical analysis from CMIP5, the most current set of coordinated climate model experiments set up as an international cooperation project for the International Panel on Climate Change.

«Our finding that vegetation plays a key role future in terrestrial hydrologic response and water stress is of utmost importance to properly predict future dryness and water resources,» says Gentine, whose research focuses on the relationship between hydrology and atmospheric science, land / atmosphere interaction, and its impact on climate change.

The CO2 physiological response has a dominant role in evapotranspiration and has a major effect on long - term runoff and soil moisture compared to radiative or precipitation changes due to increased atmospheric CO2.

This was the dramatic conclusion reached last week at a workshop in Dahlem, Berlin, where top atmospheric scientists got together, including Nobel laureate Paul Crutzen and Swedish meteorologist Bert Bolin, former chairman of the UN's Intergovernmental Panel on Climate Change (IPCC).

The Intergovernmental Panel on Climate Change states that continuing on a path of rapid increase in atmospheric CO2 could cause another 4 to 8 ° F warming before the year 2100.»

Dr Alison Cook, who led the work at Swansea University, says: «Scientists know that ocean warming is affecting large glaciers elsewhere on the continent, but thought that atmospheric temperatures were the primary cause of all glacier changes on the Peninsula.

Something that goes along with this change in atmospheric circulation is reduced sea ice in the region (while sea ice in Antarctica has been increasing on average, there have been significant declines off the West Antarctic coast for the last 25 years, and probably longer).

The change in atmospheric pressure is on the order of 0.01 % or less of the pressures which cause an explosive volcanic eruption.

«I predict that due to the loss of these atmospheric whirlpools, the average temperature on Jupiter will change by as much as 10 degrees Celsius, getting warmer near the equator and cooler at the poles,» says Marcus.

Sally, who was nominated by Dr. Beat Schmid, Associate Director, Atmospheric Sciences and Global Change Division, was honored for her exceptional contribution in the field of atmospheric science, particularly in her efforts to improve understanding of the radiative effect of clouds and aerosols on the Earth's atmosphere and their representation in climate models.

The effects on atmospheric carbon levels from landuse changes are highly uncertain, as I'm sure Ruddiman knows.

Researchers are working on modeling Mars» atmospheric changes so the astronauts can land within a sufficiently dense portion that still provides enough visibility.

The EPA report is concerned with the impacts that climate change can have on atmospheric chemistry, and in particular the summertime peaks in urban ground - level ozone which are a well - known and serious health hazard.

Hi Andrew, Paper you may have, but couldn't find on «The phase relation between atmospheric carbon dioxide and global temperature» CO2 lagging temp change, which really turns the entire AGW argument on its head: http://www.sciencedirect.com/science/article/pii/S0921818112001658 Highlights: ► Changes in global atmospheric CO2 are lagging 11 — 12 months behind changes in global sea surface temperature ► Changes in atmospheric CO2 are not tracking changes in human emiChanges in global atmospheric CO2 are lagging 11 — 12 months behind changes in global sea surface temperature ► Changes in atmospheric CO2 are not tracking changes in human emichanges in global sea surface temperature ► Changes in atmospheric CO2 are not tracking changes in human emiChanges in atmospheric CO2 are not tracking changes in human emichanges in human emissions.

Three questions arise: (a) What was the reason for the change of atmospheric conditions on Mars?

Overall, studies are inconclusive as to net impacts of changing atmospheric chemistry and climate on seedling establishment and growth.

Changes in atmospheric chemistry produced naturally and by humans, behavior of abrupt climate change events in the atmosphere; multiple controls on climate and the unique role of human impact.

Climate change scenarios are based on projections of future greenhouse gas (particularly carbon dioxide) emissions and resulting atmospheric concentrations given various plausible but imagined combinations of how governments, societies, economies, and technologies will change in the future.

To quantify the impact of human - induced climate change on Harvey and to estimate whether it indeed exacerbated the rainfall thus requires taking into account the atmospheric circulation as well as the overall warming.

The latter is not equivalent to climate change not playing a role, because such results are obtained when the effect from a warmer atmosphere is in the opposite direction to the effect on the atmospheric circulation.