Sentences with phrase «on observations and model»

Lynn, B.H., R. Healy, and L.M. Druyan, 2007: An analysis of the potential for extreme temperature change based on observations and model simulations.

Numerous recent studies based on both observations and model simulations indicate that reduced Barents - Kara sea ice in late fall favors a strengthened and northwestward expansion of the Siberian high, increased poleward heat flux, weakened polar vortex, and ultimately a negative AO.

Professor Ramanathan conducted work on observations and modeling of SLCPs, particularly black carbon in Asia.

Not exact matches

Trend Hunter, he explains, is more than a website: It's a market research firm for the digital age, with a data - driven model that contrasts with more traditional «cool gurus,» who identify trends and dispense insightful pronouncements based solely on observation and «gut instinct.»

This observation is based on our analysis of each of the fund's holdings for which we model the earnings quality and the future cash flow expectations embedded in the prices of each of the holdings.

On the other hand, induction allows us to calculate probabilities from past observations where theoretical models are unavailable, possibly because of a lack of knowledge about the underlying relation between cause and effect.

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.»

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.

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.

A detailed ozone model budget analysis was performed with simultaneous observations of O3, HCl, H2O, CH4, NO, and NO2 from the Halogen Occultation Experiment (HALOE) on the Upper Atmosphere Research Satellite (UARS) under conditions with the strongest photochemical control of ozone.

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.

The authors then modelled counts of golden eagle observations based on land cover and other environmental factors.

Much of this research builds on the past work of the team members, and the modeling results help put together some of the observations that seemed contradictory.

The most difficult thing here is the construction of reliable models based on our current studies and observations.

«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.

Combining computer models constructed largely by Princeton University researchers with on - ship observations, the researchers determined the movement and energy of the waves from their origin on a double - ridge between Taiwan and the Philippines to when they fade off the coast of China.

«Prior analyses have found that climate models underestimate the observed rate of tropical widening, leading to questions on possible model deficiencies, possible errors in the observations, and lack of confidence in future projections,» said Robert J. Allen, an assistant professor of climatology in UC Riverside's Department of Earth Sciences, who led the study.

Two years out of graduate school and keen on becoming a professor, Kaltenbacher was passionate about her work on inverse problems, which she describes as «mathematical modeling in a reverse way,» starting with observation rather than first principles.

They go on to suggest that «lowering levels of TNF may be an effective strategy in improving host defense against S. pneumoniae in older adults,» and that, «although it may be counterintuitive to limit inflammatory responses during a bacterial infection, [some existing] clinical observations and our animal model indicate that anti-bacterial strategies need to be tailored to the age of the host.»

These dust particles have surprisingly diverse mineral content and structure as compared with models of interstellar dust based on previous astronomical observations.

«Our results are based on a realistic modelling of the accretion of gas onto the black holes, and of the radiation they emit, which is compatible with current astronomical observations.

«This includes theorists studying dark matter and the formation of black holes, astrophysicists modelling the subsequent accretion process, and astronomers working on radio and X-ray observations.»

«We gradually increased the physical complexity of numerical models based on high - resolution observations, and it is really a success story for the approach we've taken with IRIS.»

«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.»

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.

Based on the observations, Sahai and his colleagues Mark Morris of the University of California, Los Angeles, and Samantha Scibelli of the State University of New York at Stony Brook developed a model of a companion star with an accretion disk to explain the ejection process.

The researchers developed a new model with this robot, one that is based on the meticulous observation and faithful reproduction of the feline leg.

The study, which combined experimental observations with mathematical modeling, showed that the flow of liquid can have two significant effects on microbes: «It quenches the ability of microbes to chase food,» Stocker says, «and it helps microbes find surfaces.»

The complete theoretical model and experimental observations can be read on Nature Communications.

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 structure is further demonstrated by the 3 - D magnetic modeling based the observations of Helioseismic and Magnetic Imager on board Solar Dynamic Observatory.

Shown are the 1988 - 2014trends in springtime ozone levels on days that were very smoggy (top panel) and of average smogginess (bottom panel), from observations (left) and from a model built by the Geophysical Fluid Dynamics Laboratory (right).

The ability to accurately determine the rate of this H - 17O fusion reaction provides nuclear physicists with another key puzzle piece, alongside direct observations of oxygen elemental and isotopic abundances in stellar atmospheres and in primitive meteorites, to zero in on complete and accurate models of stars.

The study authors based their analysis on a combination of satellite observations of rainfall and vegetation and an atmospheric circulation model to track the movement of air masses.

My view, and that of my colleagues at Chicago, Brian Fields and Craig Copi, is that the quality of the latest observations places strict constraints on all cosmological models and requires any new cosmological model to be as precise as the big bang model itself.

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.

Though the scientists don't know if such individual and pack behavior is a common occurrence, observations like these on Isle Royale provide insight into how animal societies function as well as the vicissitudes of the food chain cycle on Isle Royale, also helping to inform other models of the natural world.

The team based their model on observations of signalling in smaller areas, and extended it to cover the whole body.

The methodology is demonstrated on two model systems: the time - dependent spontaneous dissociation of photosynthetic light - harvesting antenna complexes and direct observation of DNA strands binding and unbinding in solution.

Titanic international projects that are just kicking off, including the National Science Foundation - funded Ocean Observatories Initiative and Southern Ocean Carbon and Climate Observations and Modeling project, promise to pile on reams of new data and knowledge in the coming years — not all of it expected to be postcard pretty.

Temperature observations are sparse around the hostile continent, but scientists recently modeled the ocean current knock - on effects of these wind changes, which have been caused by ozone thinning and by the buildup of greenhouse gases.

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.

Based on the data from both observations and modeling, it seems that an immigrant coming from the north is the more likely scenario, which is good, because that is what we want.

Researchers have been actively engaged in observational research and the establishment of theoretical models of AGNs, but it is just the beginning of the study on the shielding effect on molecules, which was discovered by these ALMA observations.

When combined with General Circulation Models, such observations would be essential in understanding the hydrological cycle and seasonal variation on Titan.

All these observations will be combined to improve climate models, which will provide an estimate of present - day and future surface melt on the East Antarctic ice shelves.

In addition, climate models and observations suggest that there may be modes of variability which act on multi-decadal timescales, although understanding of such modes is currently limited3.

For the earlier generation of models, results are based on the archived output from control runs (specifically, the first 30 years, in the case of temperature, and the first 20 years for the other fields), and for the recent generation models, results are based on the 20th - century simulations with climatological periods selected to correspond with observations.