Sentences with phrase «atmospheric models for»

Review the development of atmospheric models for use in weather prediction and climate studies on all scales, including the diagnosis of shortcomings.

The observations are best described by atmospheric models for which most of the incident energy is re-radiated away from the day side.

On March 19, 2008, astronomers using the Hubble Space Telescope announced confirmation of the presence of water and the detection of more methane in the atmosphere of the planet than would be predicted by conventional atmospheric models for «hot Jupiters» (Hubble news release and videos; ESA news release and videos; and Swain et al, 2008 — more below).

«A lot of atmospheric models for Mars are very simple,» says Dan Cziczo, the Victor P. Starr Associate Professor of Atmospheric Chemistry at MIT.

He is a member of the Department of Energy's Accelerated Climate Modeling for Energy (ACME) project council and co-lead in developing an atmospheric model for the project.

In a paper on the Energy & Environmental Science web site (17/7/12), meteorologist John Ten Hoeve and environmental engineer Mark Jacobson, both at Stanford University in California have calculated that, based on estimates of the radioactive nuclides released at Fukuhima, a three - dimensional global atmospheric model for radioactive fallout patterns and the linear no - threshold (LNT) model for resultant cancers, there would be between 15 and 1100 linked cancer deaths, with their best estimate being 130 deaths.

F - 930 the company Intel, in cooperation with DKRZ, presented an interactive visualization based on a cloud - resolving atmospheric model for Germany, which was calculated at DKRZ as part of project HD (CP) ².

Not exact matches

Now, to find out how the glaciers formed in the first place, scientists created models that simulated atmospheric circulation on the dwarf planet for the last 50,000 years (a mere 200 orbits around the sun for Pluto).

To figure out how to look for actual proof of extrasolar lightning, Helling combined Drift's code with another atmospheric model called Phoenix, created by astrophysicists at the University of Hamburg.

When Douglas MacMartin of the California Institute of Technology in Pasadena approached the National Science Foundation for support on a modeling effort on [albedo modification], officials told him the work was too theoretical for the engineering division and too applied for the atmospheric science program.

Mission leaders were relieved and eager to begin their studies of cloud and haze effects, which «constitute the largest uncertainties in our models of future climate — that's no exaggeration,» says Jens Redemann, an atmospheric scientist at NASA's Ames Research Center in Mountain View, California, and the principal investigator for ObseRvations of Aerosols above CLouds and their IntEractionS (ORACLES).

To determine whether declining pollutants deserve credit for the recovery, the researchers used a 3D atmospheric model to separate the effects of the chemicals from those of weather, which can affect ozone loss through winds and temperature, and volcanic eruptions, which deplete ozone by pumping sulfate particles into the upper atmosphere.

According to Klippenstein, this research improves models for atmospheric chemistry.

The researchers developed atmospheric models of the equilibrium chemistry for a brown dwarf at 250 degrees Kelvin and calculated the resulting spectra under different assumptions, including cloudy and cloud - free models.

The computer model, designed by research fellow Iain Couzin, could lead to improved guidance systems for clusters of robots, such as those used to gather oceanographic and atmospheric data.

After a painstaking analysis that modeled all known sources of acceleration for Juno, including the minute contributions from sunlight warming the spacecraft, Iess's team found a large north - south asymmetry in Jupiter's gravitational field — a clear sign of material flowing beneath the cloud tops on deep atmospheric winds.

For example, the model predicts that production of carbon dioxide must increase with time, a finding that goes against the conventional wisdom that carbon fluxes and atmospheric carbon dioxide levels have steadily decreased over the last 4 billion years.

«In our study we used satellite data for sea ice and sea surface temperatures to run some coordinated hindcast experiments with five different atmospheric models,» Ogawa says.

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.

Even models that correctly capture cloud behavior may fail to fully account for other climate feedbacks from factors like changing snow and sea ice cover, atmospheric water vapor content, and temperature.

Determining the structure of these molecules, she said, «is paving the way for future spectroscopic detection and atmospheric chemistry modeling.»

The UM Rosenstiel School researchers used historical observations of cloud cover as a proxy for wind velocity in climate models to analyze the Walker circulation, the atmospheric air flow and heat distribution in the tropic Pacific region that affects patterns of tropical rainfall.

For example, in a simulated world where the atmospheric CO2 levels were double today's values — a scenario many scientists believe likely — models predict that Earth will warm by more than 2 °C.

Those data, to be collected this year and next, could improve climate models, which account poorly for these atmospheric interactions and contain «horrific» uncertainties about the levels and behaviour of water vapour at stratospheric altitudes, Austin says.

«It would be like trying to predict El Niño with a sophisticated atmospheric model, but with the Sea Surface Temperatures taken from external, independent projections by, for example, the United Nations,» said Kalnay.

Both models help mission team members plan when and where to look for unusual atmospheric disturbances as Titan summer approaches.

Air pollutant emission inventories are essential in measuring the impact of pollution on air quality and the climate, as they are fed into atmospheric and climate models to make projections for the future.

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 ChanFor 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 Chanfor 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.

A recent trend in GCMs is to extend them to become Earth system models, that include such things as submodels for atmospheric chemistry or a carbon cycle model to better predict changes in carbon dioxide concentrations resulting from changes in emissions.

With respect to solvers, in 1993, he developed the world's fastest ordinary differential equation solver in a three - dimensional model for a given level of accuracy and applied it to atmospheric chemistry.

Regional trends are notoriously problematic for models, and seems more likely to me that the underprediction of European warming has to do with either the modeled ocean temperature pattern, the modelled atmospheric response to this pattern, or some problem related to the local hydrological cycle and boundary layer moisture dynamics.

Model simulations of 20th century global warming typically use actual observed amounts of atmospheric carbon dioxide, together with other human (for example chloroflorocarbons or CFCs) and natural (solar brightness variations, volcanic eruptions,...) climate - forcing factors.

As R139 appears to be the most massive binary system known to contain two evolved Of supergiants, it will provide an excellent test for atmospheric and evolutionary models.

The finding suggests that models used to gauge the impact of drought on ecosystems should be refined to more accurately account for the role of low atmospheric humidity.

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.

Results: Researchers at Pacific Northwest National Laboratory — in collaboration with NERSC, Argonne National Laboratory, and Cray — recently achieved an effective aggregate IO bandwidth of 5 Gigabytes / sec for writing output from a global atmospheric model to shared files on DOE's «Franklin,» a 39,000 - processor Cray XT4 supercomputer located at NERSC.

The second is the Model for OZone and Related chemical Tracers, or MOZART, a three - dimensional atmospheric chemical transport mModel for OZone and Related chemical Tracers, or MOZART, a three - dimensional atmospheric chemical transport modelmodel.

In this work, using a simple time - dependent 1D model, we demonstrate that radiative cloud feedback can drive spontaneous atmospheric variabilities in both temperature and cloud structures under conditions appropriate for brown dwarfs and directly imaged EGPs.

NGIMS can provide a basis for models of present and past atmospheric loss.

To derive the climate projections for this assessment, we employed 20 general circulation models to consider two scenarios of global carbon emissions: one where atmospheric greenhouse gases are stabilized by the end of the century and the other where it grows on its current path (the stabilization [RCP4.5] and business - as - usual [RCP8.5] emission scenarios, respectively).

For the last five years, he helped to lead the technical development team for the next generation of the atmospheric component of the Community Climate System Model Project, one of the major climate modeling activities in the United StatFor the last five years, he helped to lead the technical development team for the next generation of the atmospheric component of the Community Climate System Model Project, one of the major climate modeling activities in the United Statfor the next generation of the atmospheric component of the Community Climate System Model Project, one of the major climate modeling activities in the United States.

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).

For the hydrological modelling of the Thames river catchment done at CEH we showed that the changes in atmospheric circulation and precipitation caused higher peak 30 - day river flow, while flood risk mapping revealed a small increase in flood risk for properties in the Thames catchmeFor the hydrological modelling of the Thames river catchment done at CEH we showed that the changes in atmospheric circulation and precipitation caused higher peak 30 - day river flow, while flood risk mapping revealed a small increase in flood risk for properties in the Thames catchmefor properties in the Thames catchment.

In his career - long support of CESM, Rasch was formerly co-chair of the Atmospheric Model Working Group and team lead for the version five development of CESM's atmospheric component, called the Community Atmosphere Model (CAM5).

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.

This information is vital for numerical models, and answers questions about how dynamic ice sheets are, and how responsive they are to changes in atmospheric and oceanic temperatures.

The real «equilibrium climate sensitivity,» which is the amount of global warming to be expected for a doubling of atmospheric CO2, is likely to be about 1 °C, some three times smaller than most models assumed.

For latitudes above 60 ° N, emissions are estimated to be 18 — 29 Tg CH4 per year on the basis of top - down atmospheric model approaches.

Therefore, what Hansen's models and the real - world observations tell us is that climate sensitivity is about 40 % below 4.2 °C, or once again, right around 3 °C for a doubling of atmospheric CO2.