Sentences with phrase «using observations and model»

«Using observations and model simulations, we've demonstrated that rising Pacific - Atlantic temperatures were the major driver of rapid Arctic warming in the early 20th century.»

Methods: As reported in Geophysical Research Letters, the team led by scientists from PNNL and the National Oceanic and Atmospheric Administration's Atlantic Oceanographic and Meteorological Laboratory used both observations and models to derive their new formula.

His work mainly focuses on remote sensing of precipitation, hydrologic applications, and the analysis of extreme weather and climatic events using observation and models.

Not exact matches

As used in science, a theory is an explanation or model based on observation, experimentation, and reasoning, especially one that has been tested and confirmed as a general principle helping to explain and predict natural phenomena.

As used in science, however, a theory is an explanation or model based on observation, experimentation, and reasoning, especially one that has been tested and confirmed as a general principle helping to explain and predict natural phenomena.

You stated: «As used in science, however, a theory is an explanation or model based on observation, experimentation, and reasoning, especially one that has been tested and confirmed as a general principle helping to explain and predict natural phenomena.»

A theoretical model, then, is an imagined mechanism or process, postulated by analogy with familiar mechanisms or processes and used to construct a theory to correlate a set of observations.

Six models showed favourable effects on primary outcome measures (e.g., standardized measures of child development outcomes and reduction in behaviour problems).13 Only studies with outcomes using direct observation, direct assessment, or administrative records were included.

Working together, they will develop and test a variety of learning experiences in which students use online simulations to model energy - releasing and energy - requiring reactions, analyze and interpret data to make predictions about energy phenomena, and use evidence from their own observations or from simplified versions of scientific articles to explain phenomena and construct and critique arguments.

«Using Streptozotocin - induced type I diabetes and cornea epithelial wounding experimental models, we made novel observations that may soon lead to innovative therapies to treat DPN and ulcerations of the cornea and skin in diabetic patients,» said Yu.

Starting from the observation that the properties of water seem to appear fine - tuned, a collaboration between Dr John Russo from the University of Bristol's School of Mathematics and Professor Hajime Tanaka from the University of Tokyo, harnessed the power of powerful supercomputers, using computational models to slowly «untune» water's interactions.

Previous research has suggested a connection between coal - burning and the Sahel drought, but this was the first study that used decades of historical observations to find that this drought was part of a global shift in tropical rainfall, and then used multiple climate models to determine why.

They also used a physically based computer model of the hydrologic cycle, which takes daily weather observations and computes the snow accumulation, melting, and runoff to estimate the total snowpack in the western U.S.

Mausumi Dikpati and her colleagues at the National Center for Atmospheric Research in Boulder, Colo., used new observations of the sun's interior and new computer simulations to model the flow of plasma, or electrically charged gas, that carry the sunspots like a conveyor belt until they become powerful enough to burst free and erupt on the sun's surface.

Using geological observation, laboratory impact experiments and computer modeling, Schultz and Brown graduate student Stephanie Quintana have offered a new explanation for how those streaks were formed.

Survey data gathered voluntarily from homeless youth in Los Angeles, as well as behavioral theories and observations of previous interventions, were used to build a computational model of the interventions.

The CRaTER observations have validated the models and the ground - based measurements, meaning that lightweight shielding materials could safely be used for long missions, provided their structural properties can be made adequate to withstand the rigors of spaceflight.

Two of the major projects for this IPY will be the creation of permanent permafrost observations and an expansion of the International Tundra Experiment (ITEX), a model experiment that uses easily constructed greenhouses to artificially warm portions of the tundra.

Nadeau also studies the potential impacts of climate change on species around the globe, using modeling, field observation and experiments to predict where species are most vulnerable and determine how conservation groups can best mitigate the negative impacts of climate change on animal populations.

«There have been some idealized studies using models, and even some indirect observations off the ice shelves, suggesting that El Niño might significantly affect some of these shelves, but we had no actual ice - shelf observations.

Bajcsy uses non-invasive observations of movement and devises algorithms to model the features and properties of patients» movements, known as kinematics.

NOAA's Coral Reef Watch uses satellite observations of sea surface temperatures and modeling to monitor and forecast when water temperatures rise enough to cause bleaching.

«In contrast to the long tradition of field guides authored by expert natural historians, Map of Life draws on collective wisdom, amalgamating global data sets of species observations from published sources and using a series of modeling techniques to convert them into species range maps,» Goldsmith wrote.

Further observations will be used to refine the global map, to construct local and regional digital elevation models for scientific analysis and aid in assessment of future landing sites, and to attempt to detect and characterize global - scale seasonal variations.

Working with the University of New South Wales, scientists have developed a computer model which uses past wave observations and beach assessments to forecast the erosion and / or accretion of beach sediments over the coming year.

«The next step is to create a framework where existing and future gamma - ray observations can be used to fine - tune both the particle physics and our models of black holes.»

«Most climate models that incorporate vegetation are built on short - term observations, for example of photosynthesis, but they are used to predict long - term events,» said Bond - Lamberty, who works at the Joint Global Change Research Institute, a collaboration between PNNL and the University of Maryland in College Park, Md. «We need to understand forests in the long term, but forests change slowly and researchers don't live that long.»

Using published data from the circumpolar arctic, their own new field observations of Siberian permafrost and thermokarsts, radiocarbon dating, atmospheric modeling, and spatial analyses, the research team studied how thawing permafrost is affecting climate change and greenhouse gas emissions.

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.

Rutgers University scientist Georgiy Stenchikov worked with Lioy and others to create the most up - to - date air contaminant model, using data about the region's wind, temperature, and humidity to supplement surface and space - based observations.

Now, scientists have studied Vega with the CHARA interferometer, an array of telescopes in California yielding crisp views of stars, and modeled the observations by using new computations of how fast - spinning stars age.

The method is based on Approximate Bayesian Computation (ABC), which is a machine learning method that has been developed to infer very complex models from observations, with uses in climate sciences and epidemiology among others.

They then used the earlier observations of the changing abundances of the three pairs of predators and prey — leveraging data sets collected by other scientists — to show how the models would apply.

The team calculated the change in the amount of heat entering the ocean using a state - of - the - art high resolution ocean model developed and run by NOC scientists that is driven by surface observations.

«Basically, we're taking satellite observations that say it's getting darker and taking a model that simulates temperature and snow morphology and using that to calculate how snowpack has evolved,» Doherty said.

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.

Eri Saikawa, who studies air pollution and its health impacts at Emory University, and wasn't involved in the new study, plans to use Wiedinmyer's data in a model to see how it matches observations in China and Southeast Asia, and to see how trash burning might be contributing to the substantial amounts of air pollution there.

NASA researchers have used last year's observations to refine computer simulations of the system and to produce 3D printed models (pictured, and available to download), which have helped them discover fingerlike protrusions from the bow shock.

Based on earlier observations and modeling by Falke and a team of graduate students and faculty at CSU, the Arikaree River in eastern Colorado, which is fed by the aquifer and used to flow about 70 miles, will dry up to about one - half mile by 2045.

The observations fit well with computer simulations, and can be used to refine models of how large - scale patterns, such as the distributions of galaxies and clusters of galaxies, came to be.

Using models and satellites The study authors» «cutting - edge methodology will allow observations to be used consistently to examine large - scale deforestation impacts on rainfall, and to refine and evaluate current models to support conservation planning in the tropics,» Aragao wrote.

A similar combination of computational modeling based on quantum mechanics, molecular dynamics, and direct observation using electron microscopy «can probably be applied to many systems,» Buehler says.

Using NASA satellite observations in tandem with supercomputer processing power for modeling systems, scientists have a comprehensive suite of tools to analyze El Niño events and their global impacts as never before.

«This study confirmed that ocean circulation physics and K. brevis biology are equally important and that both immediate and short term prediction may be achieved using a combination of circulation models supported by in situ observations of physical, biological and chemical variables and satellite imagery,» concluded the researchers.

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.

FMI has been involved in research project, which evaluated the simulations of long - range transport of BB aerosol by the Goddard Earth Observing System (GEOS - 5) and four other global aerosol models over the complete South African - Atlantic region using Cloud - Aerosol Lidar with Orthogonal Polarization (CALIOP) observations to find any distinguishing or common model biases.

Right now, all of the models that forecasters use, as well as observations of what's currently happening in the tropical Pacific, are indicating that this El Niño is going to be a strong one come late fall and winter, when it usually peaks.

Ongoing radio observations (SMA, JCMT, VLA) of Sirius A are being used to set an observationally determined standard for stellar atmosphere modeling and debris disk studies around A stars, as well as to take the first step toward characterizing potential intrinsic uncertainty in stellar emission at these wavelengths.

We use previous observations of the brown dwarf disk ISO - Oph 102 to inform a fiducial model around which we build a small grid of brown dwarf disk models, in order to explore the structure of CO isotopologue, HCN, and HCO + lines.

Schimel's research team is assimilating new observational tools using satellites, networked surface observation stations, and aircraft sampling with the National Center for Atmospheric Research's Community Land Model.