Sentences with phrase «atmospheric modelling through»

Not exact matches

Haigh then plugged her data into an atmospheric model to calculate how the patterns affected energy filtering through the atmosphere.

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.

Falchi and colleagues obtained their light pollution estimates by running the Suomi satellite data through an atmospheric model that calculates skyglow at zenith (directly overhead) in a cloud - free sky.

The group reached the conclusion after having succeeded in the mathematical reproduction of the planet's current atmospheric conditions, through computer modeling that used a numerical model of the atmosphere developed by the Met Office, the UK's national meteorological service.

The team used the data from charcoal in coal to propose that the development of fire systems through this interval was controlled predominantly by the elevated atmospheric oxygen concentration (p (O2)-RRB- that mass balance models predict prevailed.

Columbia University physicist Peter Eisenberger created an effective model that proves, through real world testing, that carbon sequestration can be used on a global scale and can prevent the atmospheric levels of carbon dioxide from ever exceeding 450 ppm, below dangerous levels.

To simulate the interplay of global climate with regional pollution conditions, the scientists turned to two of the world's leading atmospheric models, both based at NCAR and developed through broad collaborations with the atmospheric science community.

NASA's Goddard Earth Observing System Version 5 (GEOS - 5) model simulates the atmosphere in 3 - D, which allows the research team to follow atmospheric gases from their sources on the ground through their journey to the upper atmosphere.

People who work in this field, called atmospheric scientists, use computers and math to model the properties of Earth's atmosphere that drive weather, climate and the movement of gases and pollutants through the air.

Vision PNNL will take a leadership role in the incorporation of aerosols into climate models, through integrative research on atmospheric aerosol interactions and through development of innovative instrumentation and measurement techniques.

The latest generation of models include interactive particulates and atmospheric chemistry and have those changing through time as well as the greenhouse gases (and solar and volcanoes etc.).

At the crux of cliate models, you will find the integration of that equation through all atmospheric layers, accounting for the emission contributions of all the radiationally active matter in those layers.

Given that the answer to this for atmospheric models is a resounding «NO» (particularly because of sub-grid scale processes which need to be effectively pre-ordained through parameterizations), and given that oceanic circulations have much longer adjustment time scales, yet also have much more intense small scale (gyre) circulations than the atmosphere, my instinct is that we are not even close to being able to trust ocean models without long term validation data.

If you are designing an atmospheric model with molecules that absorb or emit ir energy, N2 and O2 would not be modeled as absorbing or emitting ir energy through vibrational interactions with electromagnetic radiation.

The DICE model attempts to quantify how the atmospheric concentration of CO2 negatively affects economic output through its impact on global average surface temperature.

Since 1998 ECMWF has been running a coupled forecasting system where the atmospheric component of the Integrated Forecasting System (IFS) communicates with the wave model (WAM) through exchange of the Charnock parameter which determines the roughness of the sea surface (Janssen, 2004).

This means that if the regional model significantly alters the atmospheric and / or ocean circulations, there is no way for this information to affect larger scale circulation features that are being fed into the regional model through the lateral boundary conditions and nudging.

Research published in 2008 by Arizona State University professor Peter Crozier suggests that this nanoscale atmospheric aerosol species is abundant in the atmosphere over East Asian countries and should be explicitly included in models of radiative forcing (the gap between energy radiation reaching the Earth and that leaving through the upper atmosphere).

The same models that are valid today would be valid, for example, through periods of much higher volcanic activity, different geographic arrangements and foliage (albedo), and different atmospheric composition.

In the vegetation models used here, NPP is responsive to climate and atmospheric CO2, both directly and through indirect effects on vegetation development.

But in a given model you can often find ways of altering the model's climate sensitivity through the sub-grid convection and cloud schemes that affect cloud feedback, but you have to tread carefully because the cloud simulation exerts a powerful control on the atmospheric circulation, top - of - atmosphere (TOA) and surface radiative flux patterns, the tropical precipitation distribution, etc..

Blue - Action will through its concerted efforts therefore contribute to the improvement of climate models to represent Arctic warming realistically and address its impact on regional and global atmospheric and oceanic circulation.

Throughout its life, the USGCRP has created and maintained a mix of atmospheric, oceanic, land, and space - based observing systems; gained new theoretical knowledge of Earth System processes; advanced understanding of the complexity of the Earth System through predictive modeling; promoted advances in computational capabilities, data management, and information sharing; and developed and harnessed an expert scientific workforce.

However, a confident assessment of human influence on hurricanes will require further studies using models and observations, with emphasis on distinguishing natural from human - induced changes in hurricane activity through their influence on factors such as historical sea surface temperatures, wind shear, and atmospheric vertical stability.

These hypotheses will be tested through detailed analysis of climate and atmospheric model experiments.

Authors conclude from this and other evidence from process models that warmer climates may enhance tropical forest release of CO2, thus accelerating atmospheric CO2 accumulation through a positive feedback.

In the lower PBL, the main energy transport takes place through small - scale turbulence with short time scales which may not be well represented by monthly mean values from the atmospheric model used for the reanalysis.

Through the use of a Venus climate model that couples atmospheric radiative - convective equilibrium with surface processes, we show that it is likely that Venus» climate is at or near a state of unstable equilibrium.

The Carnegie team will use global atmospheric models, partly enabled by the Carnegie Institution's new high - performance computing cluster, to simulate how short - lived pollutants from different sectors and different countries get transported through the atmosphere and the distribution and strength of their climate and air quality effects.

Since we can not measure any individual forcing directly in the atmosphere, the models draw upon results of laboratory experiments in passing sunlight through chambers in which atmospheric constituents are artificially varied; such experiments are, however, of limited value when translated into the real atmosphere, where radiative transfers and non-radiative transports (convection and evaporation up, advection along, subsidence and precipitation down), as well as altitudinal and latitudinal asymmetries, greatly complicate the picture.

A first carbon cycle assessment was performed through an international model and analysis workshop examining terrestrial and oceanic uptake to better quantify the relationship between CO2 emissions and the resulting increase in atmospheric abundance.

Using the Model E forcings through 2000 and projecting them through 2100 based on the IPCC atmospheric CO2 concentration estimates for these two scenarios gave the following empirical climate sensitivities for GISS OA: