Sentences with phrase «many global climate models»

During a first postdoc, she focused on the theoretical side, producing a mathematical model complex enough to represent the physical processes at play yet simple enough that it could also be included in a global climate model, she says.

These high - resolution projections, based on global climate models, predict when and where annual coral bleaching will occur.

For projections of future temperature and precipitation during the near future (2021 - 2050) and the far future (2071 - 2100), the researchers used 11 different global climate models.

With global climate models projecting further drying over the Amazon in the future, the potential loss of vegetation and the associated loss of carbon storage may speed up global climate change.

Over the past 10 to 15 years, we have been running experiments with very complex and increasingly reliable global climate models.

The goals of the project include reconstructing extreme climate changes from the recent past (1894 - 2014), using historically referenced data to assess near - future global climate model projections, and to ultimately use this analysis to investigate ecological problems in Chesapeake Bay, such as eelgrass diebacks.

He wants to know why Earth's global climate models break down on Venus, which has an atmosphere composed of 97 percent carbon dioxide — and what that reveals about the hidden fine - tunings of Earth models.

Global climate models predict that already - wet regions, such as the northeastern United States, will get even wetter by the end of the century if carbon dioxide levels reach 717 parts per million.

There are more than a dozen widely used global climate models today, and despite the fact that they are constantly being upgraded, they have already proved successful in predicting seasonal rainfall averages and tracking temperature changes.

On a basic level, global climate models are similar to today's weather forecasting tools, explains Jerry Meehl, a senior scientist at the National Center for Atmospheric Research in Boulder, Colorado, and a leading climate modeler.

Global climate models need to account for what Meehl calls «slowly varying systems» — how warmer air gradually heats the ocean, for example, and what effect this warming ocean then has on the air.

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.

Over the past 34 years, rainfall in Uganda has decreased by about 12 percent even though many of the global climate models predict an increase in rainfall for the area, according to an international team of researchers.

«The result is not a surprise, but if you look at the global climate models that have been used to analyze what the planet looked like 20,000 years ago — the same models used to predict global warming in the future — they are doing, on average, a very good job reproducing how cold it was in Antarctica,» said first author Kurt Cuffey, a glaciologist at the University of California, Berkeley, and professor of geography and of earth and planetary sciences.

Global climate models find that rainfall in northeast Brazil is expected to decrease in the coming decades, and some rivers could see flows reduced by 60 to 70 percent, he said.

The hot has been long expected as part of global warming theory and appears in many global climate models.

Naga Oshima of the Meteorological Research Institute conducted the global climate model calculations to obtain temperature anomalies caused by various amounts of soot injected into the stratosphere.

Since this would also result in more particulate matter entering the atmosphere which in turn has an influence on cloud formation, regional and global climate models might have to be adapted accordingly.

«Advances in global climate models and high quality ocean, atmospheric and land observations are helping us push the frontiers of snowpack prediction.»

Unfortunately, current simulation models, which combine global climate models with aerosol transport models, consistently underestimate the amount of these aerosols in the Arctic compared to actual measurements during the spring and winter seasons, making it difficult to accurately assess the impact of these substances on the climate.

The research team used a global climate model to measure present - day conditions (1975 through 2004) and future scenarios (2071 through 2100), both at daytime and at night.

Using a global climate model, a team led by Princeton University researchers measured how severely heat waves interact with urban heat islands, now and in the future, in 50 American cities across three climate zones.

But early on Jenkins realized that the global climate models are too coarse to tell much about what's going to happen in the Sahelian zone.

Here, we review the likelihood of continued changes in terrestrial climate, including analyses of the Coupled Model Intercomparison Project global climate model ensemble.

Once they accomplish this, the scientists hope to include aerosols in global climate models.

The new results therefore contradict the traditional global climate models where convective clouds are seen as being independent of each other.

By combining this data with Ridgwell's global climate model, the team deduced the amount of carbon added to the ocean and atmosphere and concluded that volcanic activity during the opening of the North Atlantic was the dominant force behind the PETM.

The high resolution made it possible for the researchers to uncover the processes taking place in the atmosphere, which are only included in global climate models to a very approximate degree.

They then compared those results with predicted isotope distributions derived from a global climate model.

Traditionally, the United States and other countries have used satellites to measure emissions in a general way, to be used in global climate models.

Our global climate models zoom down to finer and finer resolutions; our satellites reveal remote corners of the globe; we increase our understanding of the response of giant ice sheets and deep ocean currents to a warming planet.

Ballantyne and coauthors from Northwestern University, the University of Colorado and the National Center for Atmospheric Research used a global climate model to investigate the amplification of Arctic temperatures in Earth's past.

So it is not surprising that while the inure than a dozen major global climate models in use around the world tend to agree on the broadest phenomena, they differ wildly when it comes to regional effects.

The models also include the greenhouse gas emissions and other pollutants that result from these processes, and they incorporate all of that information within a global climate model that simulates the physical and chemical processes in the atmosphere, as well as in freshwater and ocean systems.

Elisabetta Pierazzo of the Planetary Science Institute in Tucson, Arizona, and colleagues used a global climate model to study how water vapour and sea salt thrown up from an impact will affect ozone levels for years after the event.

To model a world of ebbing and flowing burns, Krawchuk took historic fire data then mapped it forward using 16 models of changing climates from 2010 on, what the Intergovernmental Panel on Climate Change calls global climate models (GCM).

For example, when examining hurricanes and typhoons, the lack of a high - quality, long - term historical record, uncertainty regarding the impact of climate change on storm frequency and inability to accurately simulate these storms in most global climate models raises significant challenges when attributing assessing the impact of climate change on any single storm.

Overeem's technique «has the potential to give good quantitative rainfall estimates for real - time hazards forecasting, as well as regional and global climate model analysis in regions of the world where the impact could be great,» Baeck says.

The researchers looked at a total of 34 different global climate model outputs, encompassing different degrees of atmospheric sensitivity to greenhouse gases and different levels of human emissions of greenhouse gases into the atmosphere.

If only modest action is taken to reign in greenhouse gas emissions, the model predicts that pikas will disappear from about 75 percent of sites by 2070 (51 to 88 percent, depending on the global climate model used).

A warm bias in sea surface temperature in most global climate models is due to a misrepresentation of the coastal separation position of the Gulf Stream, which extends too far north of Cape Hatteras, North Carolina.

Then she embedded it in a global climate model and watched what happened.

Willenbring noted that the new date for the glacier maximum in the Mediterranean region, which is several thousands of years earlier than the date the maximum was reached in central Europe, will help provide more context for creating accurate global climate models.

Their findings, to be published in Nature Communications, call for better calculations in global climate models.

Their findings, based on output from four global climate models of varying ocean and atmospheric resolution, indicate that ocean temperature in the U.S. Northeast Shelf is projected to warm twice as fast as previously projected and almost three times faster than the global average.

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 dynamics.

So they created a set of global climate models to analyze the ocean and atmosphere over a 40 - year period, keeping carbon dioxide levels fixed.

Using global climate models and NASA satellite observations of Earth's energy budget from the last 15 years, the study finds that a warming Earth is able to restore its temperature equilibrium through complex and seemingly paradoxical changes in the atmosphere and the way radiative heat is transported.

«Northwest Atlantic Ocean may get warmer, sooner: High resolution global climate model shows much faster warming and changing ocean circulation.»

With aggressive action to reduce greenhouse gases, the model predicts that only about 51 percent of sites will suffer local extinction (39 to 79 percent, depending on the global climate model).