Sentences with phrase «atmospheric changes at»

The team believes the ancient tropical warming caused large, rapid atmospheric changes at the equator, the intensification of the Pacific monsoon, sea - ice loss in the north Atlantic Ocean and more atmospheric heat and moisture over Greenland and much of the rest of the Northern Hemisphere.

Not exact matches

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.

The new study covers the entire U.S. West, from the High Plains states to the Pacific coast, and provides the first detailed look at how groundwater recharge may change as the climate changes, said senior author Thomas Meixner, UA professor and associate department head of hydrology and atmospheric sciences.

«Volcanic aerosols in the stratosphere absorb infrared radiation, thereby heating up the stratosphere, and changing the wind conditions subsequently,» said Dr. Matthew Toohey, atmospheric scientist at GEOMAR Helmholtz Centre for Ocean Research Kiel.

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 only thing that they showed that we didn't look at is changes in cloud cover and atmospheric moisture trends,» she said.

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.

At a global level, the excess of atmospheric CO2 is absorbed by ocean waters and it causes changes in water chemistry (pH decrease or ocean acidification).

This paper «is timely and an important step forward in understanding changes in the global methane budget,» says Isobel Simpson, an atmospheric chemist at the University of California, Irvine, who was not involved in the study.

«I knew just from basic physics that there would be a point at which heat and humidity would become intolerable, and it didn't seem that anyone had looked at that from a climate change perspective,» says Steven Sherwood, an atmospheric scientist at the University of New South Wales in Sydney, Australia.

New research published today in Nature Geoscience by Richard Zeebe, professor at the University of Hawai'i — Mānoa School of Ocean and Earth Science and Technology (SOEST), and colleagues looks at changes of Earth's temperature and atmospheric carbon dioxide (CO2) since the end of the age of the dinosaurs.

In an article published Aug. 31 in Nature Climate Change, Lin and her coauthor Kerry Emanuel, a professor of atmospheric science at the Massachusetts Institute of Technology, examined potential storm hazards for three cities: Tampa, Fla.; Cairns, Australia; and Dubai, United Arab Emirates.

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.

«When we look at this critical assembly protein, CGL71, it's as if we are looking back in time to the era when photosynthetic apparatus had to gradually adjust to the changing atmospheric conditions of our planet,» Grossman said.

The smaller the squares, the higher the model's resolution and the better it will be at detecting small - scale atmospheric changes that could spawn storms.

«Changes in the Arctic don't stay in the Arctic,» says Ivana Cvijanovic, an atmospheric modeler at the Lawrence Livermore National Laboratory in California and lead author of the study.

The findings raise important questions about the relationship between atmospheric change and soil ecosystems, says Michael Miller, a soil ecologist at Argonne National Laboratory near Chicago.

Observations of atmospheric carbon dioxide made by aircraft at altitudes between 3 and 6 kilometers (10,000 - 20,000 feet) show that seasonal carbon dioxide variations have substantially changed during the last 50 years.

New measurements by NASA's Goddard Institute for Space Studies indicate that 2012 was the ninth warmest year since 1880, and that the past decade or so has seen some of the warmest years in the last 132 years.One way to illustrate changes in global atmospheric temperatures is by looking at how far temperatures stray from «normal», or a baseline.

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 beloAt 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 beloat the surface and a warm layer below.

In the North Atlantic, more heat has been retained at deep levels as a result of changes to both the ocean and atmospheric circulations, which have led to the winter atmosphere extracting less heat from the ocean.

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.

After the Colorado floods in 2013, Martin Hoerling, an atmospheric scientist at the National Oceanic and Atmospheric Administration's Earth System Research Laboratory in Boulder, and his colleagues found that climate change has decreased the likelihood and strength of heavy rainfall in northern Colorado.

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.

Whereas the South Pole remains protected by differing geographic, atmospheric and oceanic conditions, the North Pole is undergoing rapid change not seen in at least 6,000 years and perhaps as much as 125,000 years, and which may spread to lower latitudes.

In a study set to come out in Nature tomorrow, an international group of scientists reports that they simulated atmospheric behavior using several different models and used them to forecast anthropogenically driven changes in average annual rainfall at different latitudes from 1925 to 1999.

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.

At the same time, even if California meets its ambitious target, it may not make a huge dent in the atmospheric concentrations of greenhouse gases causing climate change.

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.).

«Carbon - reduction policies significantly improve air quality,» says Noelle Selin, an assistant professor of engineering systems and atmospheric chemistry at MIT, and co-author of a study published today in Nature Climate Change.

One major question is how climate change may be intensifying westerly winds around Antarctica, and what those changes will do to southern polar clouds, says Andrew Vogelmann, an atmospheric scientist at Brookhaven National Laboratory in New York.

«Changes in ocean conditions that affect fish stocks, such as temperature and oxygen concentration, are strongly related to atmospheric warming and carbon emissions,» said author Thomas Frölicher, principal investigator at the Nippon Foundation - Nereus Program and senior scientist at ETH Zürich.

Kevin Trenberth, an atmospheric scientist at the National Center for Atmospheric Research in Colorado, gets asked the question so often about the connection between big rain events and climate change that he had this response via email: «Here we go again.»

«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.

When they factored in a constant level of CO2, they discovered a surprising development: The change required a lower overall atmospheric pressure — about one - sixth today's pressure at sea level.

Study lead author Michael Raupach, GCP co-chair and atmospheric physicist at Australia's Commonwealth Scientific and Industrial Research Organization, says it will take economic, policy and social changes to reverse the trend, such as capturing the CO2 emitted by coal - fired power plants and increased international cooperation.

Oxford University atmospheric physicist Raymond Pierrehumbert, who is among the scientists who believe cutting methane should be less of a priority than cutting carbon dioxide to tackle climate change, said the study is useful in evaluating methane capture systems at landfills.

Their results showed that changes in key water - stress variables are strongly modified by vegetation physiological effects in response to increased CO2 at the leaf level, illustrating how deeply the physiological effects due to increasing atmospheric CO2 impact the water cycle.

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.

Human activities emit about two times as much sulfur dioxide into the atmosphere, according to co-author Vitali Fioletov, an atmospheric scientist at Environment and Climate Change Canada in Toronto, Ontario.

«Global climate change involves not just a warming planet, but also increased atmospheric CO2 concentrations and changes in rainfall,» said lead author Lauren Smith - Ramesh, a postdoctoral fellow at NIMBioS.

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).

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.

Your statement that «Thus it is natural to look at the real world and see whether there is evidence that it behaves in the same way (and it appears to, since model hindcasts of past changes match observations very well)» seems to indicate that you think there will be no changes in ocean circulation or land use trends, nor any subsequent changes in cloud responses thereto or other atmospheric circulation.

To quantify the energy change, siderite's spin transition was examined using highly sensitive spectroscopic techniques at pressures ranging from zero to about 711,000 times normal atmospheric pressure (72 gigapascals), and also revealed by a visible color change after the transition, indicating rearrangement of electrons.

«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.

If we want to know why SST is changing at observed rates (long term), or why it takes so long for changes in atmospheric dynamics to register fully in the ocean, OHC is critical, but if we simply want to quantify the change, the direct measurements are more appropriate.

Reversal of three global atmospheric fields linking changes in SST anomalies in the Pacific, Atlantic and Indian oceans at tropical latitudes and midlatitudes