Sentences with phrase «of present climate models»

I have been worrying that even common properties of all present climate models and models than can be developed in near future may common bias towards such stability that is not necessarily true for the real Earth system.

So if a scientist questions the adequacy of present climate models, or fails to find conclusive evidence for global warming in a particular data - set, he or she is often reported as claiming that «there isn't really a problem».

Not exact matches

Computer models being investigated both in the US and in the Soviet Union were demonstrating that a nuclear war involving the exchange of a small fraction of the total American and Russian bombs could change the climate of the entire Northern Hemisphere, shifting it abruptly from its present seasonal state to a long, sunless, frozen night.

«This document presents science - driven predictions, based on sophisticated climate - change models, regarding how we think bird distributions in Massachusetts might change during the next 30 years,» said Jon Atwood, Mass Audubon Director of Bird Conservation and a report author

Climate models are complex numerical models based on physics that amount to hundreds of thousands, if not millions, of lines of computer code to model Earth's past, present and future.

While the trends associated with climate change — hotter days, heavier rainfall and a greater number of extreme weather events — are present in the models, for many crops in Africa and Asia it's not clear how extensive the effects will be.

While large - scale climate research models offer a systems view of what the transport sector, for example, could contribute to climate protection in comparison to the energy sector, the study presented in Science, however, examines transport - related issues within the sector by using more recent and more specific data on how people commute and travel.

Richard Betts, head of climate impacts at the Hadley Centre of the U.K.'s Met office presented to reporters in Copenhagen today a new analysis of modeling data showing how conserving tropical forests is going to be crucial if the world is to make a target of 2 ˚C, even under the most conservative projections of how much carbon the forests contain.

London researcher Rachel Lowe, Ph.D., led the development of the model that is based on 2016 climate conditions when El Nino was present in the urban coastal city of Machala, Ecuador, an area where these mosquito - borne viruses are most prevalent.

Climate models suggest that widespread glaciations couldn't take place at that time unless CO2 levels dropped to about eight times what they are at present, says Tim Lenton, an earth scientist at the University of Exeter in the United Kingdom.

Clouds also are the largest source of uncertainty in present climate models, according to the latest report of the Intergovernmental Panel on Climate climate models, according to the latest report of the Intergovernmental Panel on Climate Climate Change.

The impact of these results is wide - reaching, and Dr Pullen suggests that it may even change how we think about global climate data: «Climate models need to incorporate genetic elements because at present most do not, and their predictions would be much improved with a better understanding of plant carbon demand.climate data: «Climate models need to incorporate genetic elements because at present most do not, and their predictions would be much improved with a better understanding of plant carbon demand.Climate models need to incorporate genetic elements because at present most do not, and their predictions would be much improved with a better understanding of plant carbon demand.»

By understanding how these fishes evolved, by understanding how we got from the past to the present, we can create a model for predicting what's going to happen as global climates change, as deforestation continues, and all of these aquatic habitats change.

This image shows QBO amplitude near the equator at a height of 11 miles: Observed values from balloon wind measurements from 1950s to present; simulations from a climate model driven with observed concentrations of greenhouse gases from 1900 to 2005 and then with projected increase through 2100.

Oregon State University oceanographer Robert Dziak says that depending on the size and frequency of these events, their spongelike effects could influence ocean chemistry and temperatures worldwide, making present climate - change models inaccurate.

Further, current models used to predict the release of climate - active CO2 from soils fail to account for these microscopic, oxygen - free zones present in many upland soils, they say.

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

The climate models aren't really good enough in their representation of present - day circulation to give you much confidence in the specifics of their predictions [so that you could use them to do a cost - benefit analysis for example], but the risk of widespread change is still there.

Of the many inane arguments that are made against taking action on climate change, perhaps the most fatuous is that the projections climate models offer about the future are too uncertain to justify taking steps that might inconvenience us in the present.

Themes: Aerosols, Arctic and Antarctic climate, Atmospheric Science, Climate modelling, Climate sensitivity, Extreme events, Global warming, Greenhouse gases, Mitigation of Climate Change, Present - day observations, Oceans, Paleo - climate, Responses to common contrarian arguments, The Practice of Science, Solar forcing, Projections of future climate, Climate in the media, Meeting Reports, Miscellclimate, Atmospheric Science, Climate modelling, Climate sensitivity, Extreme events, Global warming, Greenhouse gases, Mitigation of Climate Change, Present - day observations, Oceans, Paleo - climate, Responses to common contrarian arguments, The Practice of Science, Solar forcing, Projections of future climate, Climate in the media, Meeting Reports, MiscellClimate modelling, Climate sensitivity, Extreme events, Global warming, Greenhouse gases, Mitigation of Climate Change, Present - day observations, Oceans, Paleo - climate, Responses to common contrarian arguments, The Practice of Science, Solar forcing, Projections of future climate, Climate in the media, Meeting Reports, MiscellClimate sensitivity, Extreme events, Global warming, Greenhouse gases, Mitigation of Climate Change, Present - day observations, Oceans, Paleo - climate, Responses to common contrarian arguments, The Practice of Science, Solar forcing, Projections of future climate, Climate in the media, Meeting Reports, MiscellClimate Change, Present - day observations, Oceans, Paleo - climate, Responses to common contrarian arguments, The Practice of Science, Solar forcing, Projections of future climate, Climate in the media, Meeting Reports, Miscellclimate, Responses to common contrarian arguments, The Practice of Science, Solar forcing, Projections of future climate, Climate in the media, Meeting Reports, Miscellclimate, Climate in the media, Meeting Reports, MiscellClimate in the media, Meeting Reports, Miscellaneous.

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.

To identify the present and future state of deep - sea ecosystems, we used a combination of expert opinion, current literature, and the output of the IPCC (Intergovernmental Panel on Climate Change) Fifth Assessment Report (AR5) models.

The model in question didn't give a particularly good simulation of the present - day climate, but one could say the same about every model if one was picky enough...

We will present our first steps in the construction of an ecosystem model designed to be coupled with geo - climate models of early Earth and Mars.

These struggles have undermined the effectiveness of the climate models in simulating the present climate and in projecting future trends, especially when regional details are important.

Lee, Y.H., J. - F. Lamarque, M. G. Flanner, C. Jiao, D. T. Shindell, T. Berntsen, M. M. Bisiaux, J. Cao, W. J. Collins, M. Curran, R. Edwards, G. Faluvegi, S. Ghan, L. W. Horowitz, J. R. McConnell, G. Myhre, T. Nagashima, V. Naik, S. T. Rumbold, R. B. Skeie, K. Sudo, T. Takemura, F. Thevenon (2013), Evaluation of preindustrial to present - day black carbon and its albedo forcing from ACCMIP (Atmospheric Chemistry and Climate Model Intercomparison Project), Atmos.

CESM models the global climate, providing state - of - the - art computer simulations of the Earth's past, present, and future climate states.

His project is expected to provide important insights into how surface melt affects ice shelves, and provide data for improving climate models in order to provide an estimate of present - day and future surface melt on the East Antarctic ice shelves.

Alexeev, V.A., et al., 1998: Modelling of the present - day climate by the INM RAS atmospheric model «DNM GCM».

The researchers relied on climate data and modeling to present a sweeping regional view of 30 years of worsening forest fires.

Durman, C.F., et al., 2001: A comparison of extreme European daily precipitation simulated by a global model and regional climate model for present and future climates.

Diansky, N.A., and E.M. Volodin, 2002: Simulation of the present - day climate with a coupled atmosphere - ocean general circulation model.

Second is the use of a computer model to compare the change between the LGM and the present, then extrapolate this comparison to assess the effect of 2x pre-industrial CO2 relative to our recent climate.

To address this, we present a framework for assessing three dimensions of climate change vulnerability, namely sensitivity, exposure and adaptive capacity; this draws on species» biological traits and their modeled exposure to projected climatic changes.

«Simple physics (effect of [sea - level rise] on storm surge) and simple thermodynamics (i.e. Clausius - Clapeyron) are valid whether or not we can trust the models to get the specifics dynamical linkages between climate change and extreme weather events right (and I'm deeply skeptical the models are up to this task at present).»

Ultimately of course the climate models are essential to provide much more refined projections of climate change than would be available from the global mean quantities that result from an analysis of the present sort.

The fact is that the unproven, business - model, and privatization practices they propose as education reforms have no chance of being adopted as an «integrated system,» especially in the present political climate.

One of my proudest moments was being invited to present at the National Model Schools Conference in Washington, D.C. on «Changing School Climate and Raising Achievement.»

However, the general circulation models are, at present, timeconsuming and expensive to run, and, despite the known shortcomings of the one - dimensional models, most available predictions of climate change have been made using the simpler models.

Unfolding in two parts throughout 2018, «Be Not Still: Living in Uncertain Times» addresses concerns of the present social and political climate through a radical new model of experimentation and inquiry.

Now, in terms of the models we have an interesting situation where the models are being built in order to match with a present - day observed climate that is not stationary [but that is hoped to be stationary enough that it can be assumed to be stationary for model development].

Here, we present the definition and rationale behind model tuning, review specific methodological aspects, and survey the diversity of tuning approaches used in current climate models.

ABSTRACT «We present an advanced two - layer climate model, especially appropriate to calculate the influence of an increasing CO2 - concentration and a varying solar activity on global warming.

This kind of forecast doesn't depend too much on the models at all — it is mainly related to the climate sensitivity which can be constrained independently of the models (i.e. via paleo - climate data), moderated by the thermal inertia of the oceans and assuming the (very likely) continuation of CO2 emissions at present or accelerated rates.

R.E. Benestad (2002), Empirically downscaled multi-model ensemble temperature and precipitation scenarios for Norway, Journal of Climate Vol 51, No. 21, 3008 - 3027 R.E. Benestad (2003) What can present climate models tell us about climate Climate Vol 51, No. 21, 3008 - 3027 R.E. Benestad (2003) What can present climate models tell us about climate climate models tell us about climate climate change?

Let me explain my arguments a bit better: 1) In Feichter et al. 2004 we describe a modelling study were we run the climate model twice: One run is with estimates of present day anthropogenic and natural aerosols and green house gases (called present - day scenario ~ 1985).

Analysis by Collins of climate model simulations indicated that increased CO2 may result in ENSO events becoming larger in amplitude and more frequent than under present conditions.

The work of Schmittner et al. demonstrates that climates of the past can provide potentially powerful information to reduce uncertainty in future climate predictions and evaluate the likelihood of climate change that is larger than captured in present models.

As the increasing levels of anthropogenic CO2 used for climate prediction are essentially predicated by the increase in economic activity world - wide and the effects thereof, has the IPCC's SRES model been adjusted in the light of the criticisms made by Castles and Henderson in 2002/3 and subsequently presented at the IPCC TGCIA meeting in Amsterdam, Jan 2003?

A detailed reanalysis is presented of a «Bayesian» climate parameter study (Forest et al., 2006) that estimates climate sensitivity (ECS) jointly with effective ocean diffusivity and aerosol forcing, using optimal fingerprints to compare multi-decadal observations with simulations by the MIT 2D climate model at varying settings of the three climate parameters.