Sentences with phrase «climate feedbacks have»

Note both climate forcing and climate feedbacks have vertical and horizontal structures.

You can see the video to get a full explanation, but in short, models that include high net positive climate feedbacks have to produce historical warming numbers that far exceed measured results.

«But Climate Feedback has been a really positive experience.»

Even in the unlikely event that we were to stop all emissions in the near future, this permafrost climate feedback would likely continue as a self - sustaining process, cancelling out any future natural draw - down in atmospheric carbon dioxide levels by the oceans or vegetation.

Climate Feedback has recently become part of the Guardian Environment Network, a website from the Guardian that brings together the world's best websites focusing on green topics.

Not exact matches

With two weeks left before its self - appointed deadline, a task force looking at ways to improve the state's business climate has created an email account to solicit feedback.

ALBANY — With two weeks left before its self - appointed deadline, a task force looking at ways to improve the state's business climate has created an email account to solicit feedback.

Sterling Burnett of the Heartland Institute told E&E News yesterday that he had received positive feedback for his think tank's suggestion that the administration should pull out of the underlying U.N. Framework Convention on Climate Change altogether.

In the current context of global warming it is important to assess the impacts that changes in ocean and climate may have on Antarctica, and reconstructing past climate fluctuations provides vital information on the responses and possible feedback mechanisms within the climate system.

Earlier studies on the sensitivity of tropical cyclones to past climates have only analyzed the effect of changes in the solar radiation from orbital forcing on the formation of tropical cyclones, without considering the feedbacks associated to the consequent greening of the Sahara.

A University of Alaska Fairbanks - led research project has provided the first modern evidence of a landscape - level permafrost carbon feedback, in which thawing permafrost releases ancient carbon as climate - warming greenhouse gases.

Prior to this study, «the understanding of permafrost feedbacks to climate change had been limited by a lack of data examining warming effects on both vegetation and permafrost carbon simultaneously,» said Dr. Natali.

So the fact that we have this very strong drying in the tropics during glaciation would argue for a strong feedback of water vapor concentration to the global climate during glacial - interglacial cycles.»

Previous studies have usually only included fast climate feedbacks (snow cover, clouds, etc.).

A seemingly humdrum little molecule has found itself responsible for not just one but two positive feedback loops, one moderating climate and the other gathering animals across the food web.

The new model is the first to document and quantify this new feedback — one that is not accounted for in climate models, says Jason Box, an ice scientist at the Geological Survey of Denmark and Greenland in Copenhagen, who has documented rising impurities at a local scale during field campaigns.

«Our results show that Earth has had a moderate temperature through virtually all of its history, and that is attributable to weathering feedbacks — they do a good job at maintaining a habitable climate,» said first author Joshua Krissansen - Totton, a UW doctoral student in Earth and space sciences.

A Columbia Engineering team led by Pierre Gentine, professor of earth and environmental engineering, and Adam Sobel, professor of applied physics and applied mathematics and of earth and environmental sciences, has developed a new approach, opposite to climate models, to correct climate model inaccuracies using a high - resolution atmospheric model that more precisely resolves clouds and convection (precipitation) and parameterizes the feedback between convection and atmospheric circulation.

So other planets that are in the habitable zone are likely to have their climates stabilized to moderate values by these weathering feedbacks.

Her work with Climate Feedback didn't come up during her interview, but she thinks it may have helped in minor ways.

They boil down to climate (warm and friendly behavior), input (the tendency for teachers to devote more energy to their special students), output (the way teachers call on those students more often for answers) and feedback (giving generally more helpful responses to the students for whom teachers have the highest hopes).

Using satellite data, the scientists then assessed how this new tree and plant cover would drive three climate feedbacks: water vapor in the air, carbon absorption by plants and the reflectivity of the Earth's surface.

The application has generally received positive feedback from negotiators, but Sawin acknowledges the sobering reality that some delegates are less interested in detailed climate projections than in the next election in their home country.

Simulations using a climate model showed that several large, closely spaced eruptions could have cooled the Northern Hemisphere enough to spark sea - ice growth and the subsequent feedback loop.

«We also have provided an understandable climate feedback system that explains how this cold period could be sustained for a long period of time.»

First that CO2 is the main climate driver, second that in calculating climate sensitivity the GHE due to water vapour should be added to that of CO2 as a feed back effect and third that the GHE of water vapour is always positive.As to the last point the feedbacks can not be positive otherwise we wouldn't be here to talk about it.

(1) How does he reconcile his belief about the climate being so stable... i.e., having strong negative feedbacks... with the ice age — interglacial oscillations?

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

General circulation models have generally excluded the feedback between climate and the biosphere, using static vegetation distributions and CO2 concentrations from simple carbon - cycle models that do not include climate change6.

The climate sensitivity classically defined is the response of global mean temperature to a forcing once all the «fast feedbacks» have occurred (atmospheric temperatures, clouds, water vapour, winds, snow, sea ice etc.), but before any of the «slow» feedbacks have kicked in (ice sheets, vegetation, carbon cycle etc.).

That the climate models (which he labels as UN) must have double counted the feedbacks.

One issue that I have wondered about for some time is to what extent the paleoclimate record supports the distinction between slow - feedback and fast - feedback climate sensitivity.

I'm not even an amateur climate scientist, but my logic tells me that if clouds have a stronger negative feedback in the Arctic, and I know (from news) the Arctic is warming faster than other areas, then it seems «forcing GHGs» (CO2, etc) may have a strong sensitivity than suggested, but this is suppressed by the cloud effect.

Thus in summary, a change in sensitivity of one of the primary actors in climate variation has only effect for the general sensitivity of climate, if all the feedbacks are essentially similar for all primary actors involved, which is highly probably not the case...

Uncertainties, probabilities and risks to the marine environment have to be assessed as well as their feedback to climate system.

That's the same value for climate sensitivity I've seen from the string theory physics site and from knowledgeable climate sites as well — it's the number people get this way: calculated in the absence of any feedback, on the hypothetical twinning of each molecule of CO2 in the atmosphere to make two where there were one, instantly, and having nothing else happen.

In the other direction, at higher temperatures there is expected to be carbon - cycle feedbacks, that will amplify the warming, so then the climate sensitivty would be higher.

A sensitivity which is too low will be inconsistent with past climate changes - basically if there is some large negative feedback which makes the sensitivity too low, it would have prevented the planet from transitioning from ice ages to interglacial periods, for example.

If there were a bad design flaw in a thermostat, such that temperatures over 100 F turned the furnace on, that room's climate would have a tipping point ~ 100 F and the room would get hard to cool whenever temperatures rose over that («positive feedback,» at least for awhile.)

Note that the observational approach needs to assume a constant climate sensitivity between different states, whereas perturbed physics ensembles don't (though you still need to understand what feedback processes are important between different climate states to have confidence in the results).

Beckage tells us that the uncertainty from human feedback comes close to the uncertainty scientists still have in the physical systems (things like permafrost melt, climate sensitivity, and all that).

A few other things — Mann et al. does not «get rid» of a MWP and LIA — «weaker TSI forcing would imply the presence of a stronger climatic feedback to TSI variation and / or a stronger climate sensitivity to other solar changes» — What about non-solar changes?

To explore the potential importance of carbon cycle feedbacks in the climate system, explicit treatment of the carbon cycle has been introduced in a few climate AOGCMs and some Earth System Models of Intermediate Complexity (EMICs).

In addition, several approaches have been based on a uniform prior distribution of climate feedback.

It is even incompatible with the low climate sensitivities you would get in a so - called «no - feedback» response (i.e just the Planck feedback — apologies for the terminological confusion).

``... without the CO2 feedback the climate change would be much more confined to the Northern Hemisphere extratropics, where the great ice sheets wax and wane.

[Response: Computed cloud feedbacks would mainly have the potential to affect the results by changing the asymmetry between the climate sensitivity going into the LGM vs. going into a 2xCO2 world.

However, without the CO2 feedback the climate change would be much more confined to the Northern Hemisphere extratropics, where the great ice sheets wax and wane.

The team also have a separate project, called Climate feedbacks from wetlands and permafrost thaw in a warming world (CLIFFTOP), which aims to quantity the amount of methane likely to be released from thawing permafrost methane emissions under 1.5 C and 2C scenarios.

These myriad unmodeled amplifying feedbacks support the analysis that the climate is much more sensitive to changes in greenhouse gas emissions and other «forcings» than the IPCC models have been saying.