Sentences with phrase «computer models and observations»

Both computer modelling and observation suggest that these crops are fully pollinated by wild bees.

Not exact matches

Computer modeling and satellite observations suggest that these tiny particles can increase storm - cloud cover over certain regions of the North Pacific by 20 to 50 percent, enough to alter storm tracks in some cases.

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.

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.

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.

Astronomical observations aren't detailed enough to settle the argument, and computer models require a complex mix of data from general relativity, plasma physics, and magnetic fields.

EWeLiNE combines these data with other atmospheric observations — from ground - based weather stations, radar and satellites — and sophisticated computer models predict power generation over the next 48 hours or so.

Computer models can give a good estimate of mantle flow and crustal uplift, he said, and GNET's mission is to make those models better by providing direct observations of present - day crustal motion.

By combining satellite images of the ice sheet and wind stress data from observations and computer modeling, Greene and his collaborators were able to study the chain of events that brings the warm water to Totten.

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.

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.

In this technique, scientists initiate a computer model with data collected before a past event, and then test the model's accuracy by comparing its output with observations recorded as the event unfolded.

The team combined a computer model with 100 years of observations to tease out the fact that global sea - level rise is increasing the tidal range, or the distance between the high and low tides, in many areas throughout each bay.

The back and forth between the tissue models and the computer models will allow them to test basic biophysical theories explaining their experimental observations.

Theories, computer models, and indirect observations have indicated that there is a cosmic web of dark matter that connects galaxies and constitutes the large - scale structure of the cosmos.

Current theories derived from computer models and astronomical observations indicate that a star and its planets form from a collapsing cloud of dust and gas within a larger cloud know as a nebula, according to the Space Telescope Science Institute in Baltimore.

In particular, better computer power [is needed] because we do have some observations and some process understanding, but they happen at very fine spatial and temporal scales, and that's the hardest thing to model because it takes an enormous amount of computer power.

(Brown and Batygin figured out that it probably exists by using mathematical modeling and computer simulations, not direct observation.)

According to the authors of the study, who used geological observations made using the THEMIS instrument on board the Mars Odyssey spacecraft, laboratory impact experiments and computer modeling of impact processes, large crater - forming impacts would have created tornado - like wind vortices that reached speeds of up to 500 miles per hour.

Scientists worldwide use the agency's field data, together with satellite observations and computer models, to tackle environmental challenges and advance our knowledge of how the Earth works as a complex, integrated system.

A wide variety of quantitative scientists (computational biologists, statisticians, mathematicians, computer scientists, engineers, and physicists) are working to improve the quality of these approaches and to create, refine, and retest the models to accurately reflect observations.

Researchers also combine their observations and data with computer models that try to replicate weather and sea ice conditions in the Arctic.

Engineers have used computer generated models and templates to determine exactly where to separate the pieces so that the car can be loaded into specially designed crates for transportation to the building and then on to the observation deck.

The researchers at the Laboratory for Climate Sciences and the Environment at Gif sur Yvette analysed computer models of the interactions between climate and the biosphere, and combined them with observations of carbon dioxide uptake from ecosystems, and records of crop yields.

An important point with reanalyses, is that the model used doesn't change over the time spanned by the analysis, but reanalyses are generally used with caution for climate change studies because the number and type of observations being fed into the computer model changes over time.

The «Report» is based not on theoretical demonstration nor on empirical observation but on computer models — an expensive and unreliable form of guesswork.

To come to their findings, the authors used a mixture of paleoclimate records, computer models, and observations of current rates of sea level rise, but «the real world is moving somewhat faster than the model,» Hansen says.

As it happens, AGW is a very highly politicised issue, deals with uncertain predictions based on computer models (rather than observations) and there is a substantial minority of experts, including some IPCC contributors who don't agree with this position.

The scientists, using computer models, compared their results with observations and concluded that global average annual temperatures have been lower than they would otherwise have been because of the oscillation.

In developing computer models of nuclear - winter scenarios, researchers use both Hamburg and the Hiroshima firestorms as example cases where soot might have been injected into the stratosphere, [4] as well as modern observations of natural, large - area wildfires.

If only let's say 90 % of the budgets spent on computer modeling had gone on more extensive, more detailed observations since 1979 (the date of that sensitivity of 3 plus or minus 1.5 which seems to have so influenced the modelers and proven so hard for them to improve upon much).

These observations, together with computer model simulations and historical climate reconstructions from ice cores, ocean sediments and tree rings all provide strong evidence that the majority of the warming over the past century is a result of human activities.

Our key observation, ignoring climate models and focusing on climate data, is that CO2 climate sensitivity has been far overstated by the IPCC and its disciples, primarily because of their misguided allegiance to un-validated computer models that engineers dealing with public safety issues would completely ignore.

In fact, most uncertainties in the alarmist pseudo-science are internal contradictions and consequences of its shoddy practices: cherry picking data, making conclusions based on statistically insignificant observations, declaring trends based on variations that are within error margins, relying on computer models that contradict principles of the information theory, forging forecasts for unreasonably long time periods, etc..

My own pet hate is post-Modernist science, where narratives, opinions, computer models, and political concerns, are least as important, if not more so, than concrete scientific evidence collected by experimentation and observation and impartial analysis.

Therefore, to understand what has happened in the past, and what will happen as greenhouse gases continue to accumulate in the atmosphere, requires a familiarity with the various aspects of the system, utilizing everything we have available — observations, theory, and computer modeling.

Over decades, improvements in observations of the present climate, reconstructions of ancient climate, and computer models that simulate past, current, and future climate have reduced some of the uncertainty in forecasting how rising temperatures will ripple through the climate system.

The report, however, is the first to confirm, based on both observations and computer modeling, that the warming effect of black carbon dominates, overwhelming any cooling effect of other pollutants.

These records can then be integrated with observations of Earth's modern climate and placed into a computer model to infer past as well as predict future climate.

In fact, most climate specialists now agree that actual observations from both weather satellites and balloon - borne radiosondes show no current warming whatsoever — in direct contradiction to computer model results.»

The historical climate record and recent observations (as against fallible computer models) show that CO2 doesn't cause warming — game over for the AGW supporters, which means that the thousands on non-jobs that have been supporting this non event (hoax) need to go.

To draw another parallel here, in contrast with Boeing's engineers and computer scientists — and again from my personal observation — there seems to be little interest among most of the climate modeling engineers and the climate modeling computer scientists as to what actually is physically happening up there in the sky.

So explain why the only experiment that matters (real world observation) doesn't match up to the computer climate models (and never has).

They then ran computer models of the atmosphere to measure the effects of the black carbon, based on what scientists have learned about chemical reactions in clouds from experiments and observations.

«Scientific conclusions derive from an understanding of basic laws supported by laboratory experiments, observations of nature, and mathematical and computer modeling.

And all because we have the temerity to say that statistical manipulations have made a minor observation stronger than true - to - the - facts, and that computer models are not, based on comparison to observation, looking accurate enough to deep - six the fundamentals of our civilizatiAnd all because we have the temerity to say that statistical manipulations have made a minor observation stronger than true - to - the - facts, and that computer models are not, based on comparison to observation, looking accurate enough to deep - six the fundamentals of our civilizatiand that computer models are not, based on comparison to observation, looking accurate enough to deep - six the fundamentals of our civilization.

and «all the direct observations of the physical world confirming climate change never happened — disregard those thousands and thousands of studies, I decree that all the evidence comes from computer models!»

This understanding is not primarily based on observations, nor on complicated computer models, but on our theoretical understanding of physics and on paleontological evidence.