Sentences with phrase «in climate model»

I am a climate scientist and have spent much of my career with my head buried in climate model output and observational climate data, trying to tease out the signal of human - caused climate change.

That this signal is not seen in climate model simulations may partially explain the models» inability to simulate the current stagnation in global surface temperatures.

Judith, I think falling best estimates for aerosol offsets in the SOD (compared to AR4) and simultaneous continued use of earlier (larger) aerosol offsets in the climate model simulations borders on daft.

«Changing Spatial Structure of the Thermohaline Circulation in Response to Atmospheric CO2 Forcing in a Climate Model.»

Listing all possible sources of error in a climate model would therefore not only be difficult, but might well give the misleading impression that the models are worse than they really are.There are several ways of double - checking whether advances in modelling are really improving model reliability.

Fyfe and colleagues (2013) find that the observed warming over the periods 1993 - 2012 and 1998 - 2012 is significantly less than the warming in climate model simulations, but that the same models successfully simulate the rate of warming over the 1900 - 2012 period.

This kind of insufficient scientific understanding is not a good basis for high confidence in the climate model simulations and projections.

It is much easier to isolate causes and effects in a climate model than in the climate system itself.

This research, which was funded by the U.S. National Science Foundation (NSF) and the Swiss National Science Foundation, is the first time that summer heat and its dependence on the rate of greenhouse gas emissions have been studied in a climate model simulation.

«In these climate model simulations, the world is just now starting to enter into a new place, where rates of temperature change are consistently larger than historical values over 40 - year time spans,» said Smith.

For example, if one asks how high the CO2 concentration can rise in a climate model before the surface has warmed 2 ℃ above pre-industrial temperatures — the warming threshold that countries pledged to avoid in the Paris Agreement — the answer depends strongly on the model's ECS.

Direct comparison of the radiances predicted by the model to those observed by AIRS in the thermal spectral regions dominated by water vapor absorption provides a means of assessing the simulation of water vapor in the climate model at the high level of detail provided by spectral measurements.

PLUMES (Pathways for linking uncertainties in climate model projections and effects)(2014 - 2018).

Ekwurzel and her co-authors used Heede's data on company emissions in a climate model that captures how these emissions are incorporated into the Earth's carbon cycle.

Left: in the climate model CM2.6 in a scenario with a doubling of the amount of CO2 in the air.

This is not include in climate model.

would be a worthy inclusion in a climate model FAQ.

Having blundered part way through the article that Gavin suggested, what I have noticed is the extreme level of specification which exists in the climate model.

The most important part of their work was to simulate the iris in a climate model by artificially tweaking the model's convective parameterization.

A new large uncertainty analysis that appeared this week in Nature shows that it is very difficult to get a climate sensitivity below 2 ºC in a climate model, no matter how one changes the parameters.

To what extent was this taken account of in climate model calibration?

The research article has the title Strong carbon cycle feedbacks in a climate model with interactive CO2 and sulphate aerosols and appeared in Geophys.

A good way to estimate the effect of the thermohaline part of the heat transport is to shut it down by dumping a lot of freshwater into the north Atlantic in a climate model, which stops deep water formation there.

We also discuss the challenges and opportunities in applying so - called objective methods in climate model tuning.

Has this positive feedback been taken into account in climate model reruns of climate in the distant past?

This can be calculated with chemistry - climate models, and is increasingly being used in climate model scenarios (see here for instance).

The reduction resulted from correcting a bug found in the climate model computer code.

Wood, R.A., A.B. Keen, J.F.B. Mitchell, and J.M. Gregory, 1999: Changing spatial structure of the thermohaline circulation in response to atmospheric CO2 forcing in a climate model.

Essery, R.H., J. Pomeroy, J. Parvianen, and P. Storck, 2003: Sublimation of snow from boreal forests in a climate model.

The impact of positive feedback from ESAS methane is not currently included in climate model projections.

Researchers measure historical trends of soot in a southeastern Tibetan glacier and identify emission sources in a climate model

The team increased one forcing agent (see sidebar) in a climate model, for example carbon dioxide, and decreased another, say methane, so that global mean temperature didn't change.

Led by scientists at Pacific Northwest National Laboratory, a research team for the first time developed a simplified and computationally efficient way to represent these carbon - based bits in a climate model.

Throughout its climate modeling phase, Exxon researchers, like outside scientists, grappled with the uncertainties inherent in climate model projections.

Has this positive feedback been taken into account in climate model reruns of climate in the distant past?

The estimations of their occurrence in the future climate is based on the occurrence of their favorable environments in climate model simulations.

A land - ocean pattern like that above was used in a climate model to show how storm clouds could have shielded ancient Venus from strong sunlight and made the planet habitable.

«At present, these effects are not generally accounted for in climate model prediction studies,» study co-author J. T. Kiehl of NCAR notes.

Seeing himself as a strict empiricist whose hurricane predictions are based on decades of «crunching huge piles of data,» Gray is convinced that the atmosphere is too complicated to be captured in computer simulations, at one point fulminating that «any experienced meteorologist that believes in a climate model of any type should have their head examined.»

«It's not all sites and all places at all times, but if we have confidence in the climate model predictions, then according to these theories, we would expect the whole process to accelerate over next few decades,» Veblen said.

It's a well - known fact that clouds are the major uncertainty in any climate model.

Andrew Weaver, who holds the Canada Research Chair in climate modelling and analysis, says when it comes to saving energy and cutting carbon emissions, it's not enough to provide people subsidies on retrofits or other upgrades.

«That's something we really need to be able to understand and replicate in climate models.

It now seems possible, though, that flaws in climate models are leading them to underestimate even shorter - term feedbacks.

A better understanding of the heating distributions required to robustly simulate strong MJOs in climate models will improve insights into the dynamics of the climate system and projections of future climate.

Therefore, also changes in land cover should be represented in climate models for projections of future climate,» concludes Francesco S.R. Pausata.

«Global warming slowdown: No systematic errors in climate models, comprehensive statistical analysis reveals.»

Therefore, Caldeira said, the more important question - and one of the largest sources of uncertainty in climate models - is «will the end of oil usher in a century of coal, or will it usher in a transition toward low - carbon - emitting technologies?»

The ability of the inorganic component of sea spray particles to take up water has been the focus of this international study where a large suite of well - controlled laboratory experiments have shown, for the first time, that the hygroscopicity of the inorganic component of sea spray is significantly lower than pure sodium chloride, a substance routinely used to describe their hygroscopicity in climate models.

The simulations were performed over an area that typically constitutes a single field area in climate models, that is, an area of 200 km x 200 km.