Sentences with phrase «with atmospheric changes»

With the atmospheric changes occurring these days, however, this cycle could happen in centuries.

No one knows for sure why the currents slowed, but Marcus and his colleagues note that it happened in lockstep with atmospheric changes.

Not exact matches

This analysis is paired with highly quantitative accounts of the various links between population growth; hunger and poverty; pollution and atmospheric change; the extinction of species; and the effects of militarism.

Each extinction was in some way associated with drastic changes in the planet's atmospheric CO2 levels.

Combined with a decrease in atmospheric water vapor and a weaker sun due to the most recent solar cycle, the aerosol finding may explain why climate change has not been accelerating as fast as it did in the 1990s.

The challenge may arise from the models» inability to adequately represent the atmospheric heating associated with changes in cloud populations.

In an upcoming paper, Max Bothwell, a scientist at Environment Canada, proposed that climate change is one of four factors — along with atmospheric deposition of nitrogen from fossil fuel burning — boosting the blooms.

People have been fascinated with weather forecasting at least dating back to the ancient Babylonians, who tried to use cloud formations and other atmospheric conditions to predict short - term weather changes.

The new hi - res composite images change that, suggesting instead that prominences could be one of the driving forces for the solar wind, since to create the smoke rings, and other patterns in the corona, they must be creating much larger atmospheric disturbances than previously thought, with a much longer range.

«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.

They compared those events with changes in the Global Wind Oscillation (GWO) index, a collection of climate and weather information that measures atmospheric angular momentum, or the degree of waviness in the jet stream.

Black carbon aerosols — particles of carbon that rise into the atmosphere when biomass, agricultural waste, and fossil fuels are burned in an incomplete way — are important for understanding climate change, as they absorb sunlight, leading to higher atmospheric temperatures, and can also coat Arctic snow with a darker layer, reducing its reflectivity and leading to increased melting.

And while the scientists who conducted the study are still investigating the atmospheric mechanisms behind this change, the trend seems consistent with a warming climate.

Tropical widening is associated with several significant changes in our climate, including shifts in large - scale atmospheric circulation, like storm tracks, and major climate zones.

The results, in the October 15 Science, agree with theoretical predictions, suggesting that superconducting gravimeters can help satellites chart the earth's gravity to map changes in polar ice cap thickness, seawater levels, atmospheric density and planetary geology.

Now a group of American and British scientists have used a new chemical technique to measure the change in terrestrial temperature associated with this shift in global atmospheric CO2 concentrations.

The authors used «fingerprints» of the ozone changes with season and altitude to attribute the ozone's recovery to the continuing decline of atmospheric chlorine originating from chlorofluorocarbons (CFCs).

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.

Victor Smetacek, the German oceanographer who led the expedition along with Victor Wajih Naqvi, an Indian geochemist, says that result means that iron fertilization has a much lower sequestration potential for atmospheric CO2 and, thus, will play a smaller role in fighting climate change than previously expected.

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

Gentine and his team are now exploring ways to model how biosphere - atmosphere interactions may change with a shifting climate, as well as learning more about the drivers of photosynthesis, in order to better understand atmospheric variability.

Indeed, Eric Skyllingstad, a COAS professor of atmospheric sciences, says in an interview with Science Careers that the position has a real potential to «change into a research or tenure - track faculty» job.

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).

At that time, changes in atmospheric - oceanic circulation led to a stratification in the ocean with a cold layer at the surface and a warm layer below.

The researchers warn, however, that the future evolution of the AMO remains uncertain, with many factors potentially affecting how it interacts with atmospheric circulation patterns, such as Arctic sea ice loss, changes in solar radiation, volcanic eruptions and concentrations of greenhouse gases in the atmosphere.

With the need to evaluate atmospheric conditions, bioindicators — organisms whose response to environmental changes indicates the health of an ecosystem — have attracted considerable attention.

An elfish presence with a dried - apple - doll face and wild, tousled hair, he was already one of the great men of atmospheric - change research when he crossed the George Washington Bridge for dinner with John Allen at a Manhattan restaurant.

As for the paper's conclusion that removing atmospheric carbon is necessary in order to achieve the 2 ˚C target, climate scientist Richard Moss of the Pacific Northwest National Laboratory's Joint Global Change Research Institute in College Park, Maryland, says that's a nearly impossible goal «with what we know about today.»

«We can also draw conclusions about past atmospheric circulation patterns, with implications for future climate changes.

The team analyzed an index of sea surface temperatures from the Bering Sea and found that in years with higher than average Arctic temperatures, changes in atmospheric circulation resulted in the aforementioned anomalous climates throughout North America.

There are strong competing effects such as changes in the large - scale atmospheric circulation, sea surface temperature changes like El Niño and La Niña and the dynamics of westerly storm tracks that all interact at the mid-latitudes,» said Stanford co-author Matthew Winnick who contributed to the study with fellow doctoral student Daniel Ibarra.

The study argued that changes in the sun's radiation output played a major role in influencing shifts in Arctic air temperatures — a view at odds with mainstream climate science, which fingered atmospheric carbon dioxide as a bigger player.

With one AWARE location near the coast and another in the interior, project scientists aim to compare how atmospheric systems passing through West Antarctica affect both locations, and how those changes translate to wider global shifts.

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.

They were Jorge Sarmiento, an oceanographer at Princeton University who constructs ocean - circulation models that calculate how much atmospheric carbon dioxide eventually goes into the world's oceans; Eileen Claussen, executive director of the Pew Center for Global Climate Change in Washington, D.C.; and David Keith, a physicist with the University of Calgary in Alberta who designs technological solutions to the global warming problem.

«These results suggest that continuing increases in atmospheric CO2 associated with global climate change will increase both the level of Alternaria exposure and antigenicity [the ability to produce an immune response] of spores that come in contact with the airways.»

Scientists are reluctant to directly link climate change with extreme weather events such as storms and drought, saying these fluctuate according to atmospheric conditions, but green groups link the two in their calls for action.

Combined with changes to storm tracks linked to atmospheric circulation changes, this can mean wetter winter weather for central Chile.

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 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.

The El Niño - Southern Oscillation cycle refers to a fluctuation between unusually warm (El Niño) and cold (La Niña) waters in the tropical Pacific, with associated changes in atmospheric circulation (the Southern Oscillation)(Figure 2 - 5).

He promoted the use of water stable isotopomers for reconstructing past climate changes from ice cores and with associated atmospheric modelling using both dynamically simple and General Circulation Models (GCMs).

-- The El Niño - Southern Oscillation cycle refers to a fluctuation between unusually warm (El Niño) and cold (La Niña) waters in the tropical Pacific, with associated changes in atmospheric circulation (the Southern Oscillation)(Figure 2 - 5).

In addition, he praised her leadership with the National Center for Atmospheric Research in advancing the Weather Research and Forecasting model for climate research, and in projects such as the North American Regional Climate Change Assessment Program, as demonstration of her prominence in the atmospheric and climate science community.

«One thing we can say for sure: We don't say «one can't attribute any single event to climate change» any more,» Adam Sobel, an atmospheric scientist who wasn't involved with the BAMS report, said in an email.

«It's important to determine where we believe that some of the recent trends in circulation could potentially be linked with climate change, rather than just natural variability,» Ted Shepherd, an atmospheric scientist at the University of Reading in the U.K., said in an email.

«We know rather little about how much methane comes from different sources and how these have been changing in response to industrial and agricultural activities or because of climate events like droughts,» says Hinrich Schaefer, an atmospheric scientist at the National Institute of Water and Atmospheric Research (NIWA) in New Zealand, who collaborates with Petrenko.

At the heart of the AO system is a six - inch - wide deformable mirror that changes its shape up to 2,000 times per second to cancel out atmospheric distortion; the resulting images are therefore ten times sharper than previous images taken with the telescopes.

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..

The top priorities should be reducing uncertainties in climate sensitivity, getting a better understanding of the effect of climate change on atmospheric circulation (critical for understanding of regional climate change, changes in extremes) and reducing uncertainties in radiative forcing — particularly those associated with aerosols.