Sentences with phrase «dynamical changes in»

Estimates of the decadal variability in ice sheet mass loss (11) suggest the impact on acceleration estimates is ∼ 0.014 mm / y2 for a 25 - y time series, in the absence of rapid dynamical changes in the ice sheets.

A significant uncertainty in future projections of sea level is associated with dynamical changes in the Antarctic and Greenland ice sheets and a key aspect of this uncertainty is the role of ice shelves, how they might respond to climate change, and the effect this could have on the ice sheets.

They also suggest that there would be complex spatial patterns of response â $ «local warming in the lower stratosphere, increases in reflected solar radiation, decreases in outgoing longwave radiation, dynamical changes in the northern hemisphere winter circulation, decreases in tropical precipitation etc..

A. A., 2009: Dynamical changes in the ENSO system in the last 11,000 years, Climate Dynamics, Volume 33, Issue 7 - 8, pp 1069 - 1074: 10.1007 / s00382 -008-0469-4

They do not include «rapid and dynamical changes in ice flow», because the IPCC was too uncertain about how likely or influential these changes might be.

In his Environmental Research Letters paper Hansen claims that the IPCC 2007 figures are low because the IPCC says it is unable to evaluate possible dynamical responses of the ice sheets and therefore its figures do not include any possible rapid dynamical changes in ice flow.

Of course, most IPCC scientists don't believe that rapid dynamical changes in ice flow can happen!

Hatun et al. examined the possibilities that [i] a change in rain falling over the ocean (freshens the water) and evaporation (increases the salinity by removing water and leaving salt behind), [ii] increased salinity in the sub-tropical gyre (in the main part of the North Atlantic), [iii] increased salinity in the sub-polar gyre, or [iv] dynamical changes in the relative contributions from the two gyres could explain the high salinities in the in - flow regions.

Not exact matches

This relates to the sensitive dependence of non-linear systems to the initial values of its dynamical parameters (often referred as the «butterfly effect,» a phrase coined by the meteorologist E.N. Lorenz).7 In such a system, even the smallest change (or uncertainty) of initial values of a non-linear or dynamically coupled system, show long - term divergence of its phase - map trajectories, leading to the formation of a basin of so - called «strange attractors.»

However, the introduction of quantum mechanical principles in the early part of this century brought about a dramatic change In our notions of causality, by allowing the concept of non-deterministic evolution of dynamical systems to gain ground in the natural sciencein the early part of this century brought about a dramatic change In our notions of causality, by allowing the concept of non-deterministic evolution of dynamical systems to gain ground in the natural scienceIn our notions of causality, by allowing the concept of non-deterministic evolution of dynamical systems to gain ground in the natural sciencein the natural sciences.

Such dynamical changes favor certain types of weather situations in some regions and others elsewhere.

«To explore the long - term effects of a global GHG mitigation strategy, we used dynamical downscaling from global simulations to predict the changes in air quality and related premature deaths.»

The idea that climate behaves like a dynamical system addresses some of the key shortcomings of the conventional view of climate change — the view that looks at the planet as a whole, in terms of averages.

The temperature change in any particular region will in fact be a combination of radiation - related changes (through greenhouse gases, aerosols, ozone and the like) and dynamical effects.

Dynamical effects (changes in the winds and ocean circulation) can have just as large an impact, locally as the radiative forcing from greenhouse gases.

Jiacan Yuan is a climatologist who is interested in understanding the fundamental dynamical processes in the atmosphere and improving climate models, which could give us better predictive power and risk assessment of the changing climate.

Dynamical factors and thermodynamic aspects of climate change can interact in complex ways and there are many examples where the circulation is as important as the thermodynamics.

Other likely consequences (e.g. rapid dynamical sea level changes, shift in the inter-tropical convergence zone and hence tropical precipitation patterns) are discussed in the Rahmstorf and Zickfeld editorial essay mentioned above, and the references therein.

Raymo and Paillard have a good story about the 100KYr cycle arising from the modulation of the precessional cycle by the changes in the Earth's orbital eccentricity, coupled with some glacial dynamical effects which «rectify» the high frequency precessional signal.

cutting - edge climate scientists should repetitively remind consensus climate scientists that climate change is a dynamical coupled phenomenon that per Lovejoy (2017), https://doi.org/10.22498/pages.25.3.136, with an atmosphere that varies: «On scales ranging over a factor of a billion in space and over a billion billion in time...» (see the first image).

The lag between decreases in sea ice extent during late summer and changes in the mid-latitude atmospheric circulation during other seasons (like autumn and winter, when the recent loss of sea ice is much smaller) have been demonstrated empirically, but have not been captured by existing dynamical models.

So our point is, of course, that regardless of what mechanisms are responsible for a mean change in the Walker circulation in the AR4 simulations you've analyzed, if the simulations are not getting the dynamical mechanisms discussed in our post right, it is quite conceivable that at least the amplitude and perhaps the sign of the change in the Walker circulation is wrong, regardless of what mechanisms are responsible for the changes in the simulations analyzed.

Dynamical, biological and chemical changes that go * along * with the temperature change are required to explain the bulk of the changes in CO2.

Accurate long - term scientific predictions require conserved quantities: in solar system dynamics this conserved quantity is dynamical energy; in Hansen's climate - change theory it is thermal energy.

One driver of temperatures in this region is the abundance and variability of ozone, but water vapor, volcanic aerosols, and dynamical changes such as the Quasi - Biennial Oscillation (QBO) are also significant; anthropogenic increases in other greenhouse gases such as carbon dioxide play a lesser but significant role in the lower stratosphere.

If the understanding of the dynamical aspects of he ODS forced stratosphere are also correct in theory, expectations are the circulation changes in the SH will revert to their pre 1976 Behavior,

«A dynamical system such as the climate system, governed by nonlinear deterministic equations (see Nonlinearity), may exhibit erratic or chaotic behaviour in the sense that very small changes in the initial state of the system in time lead to large and apparently unpredictable changes in its temporal evolution.

Robert I Ellison: Dynamical complexity explains both persistence and abrupt shifts in climate data — and demands that we change our expectations about future behaviour from slow and gradual to abrupt and potentially large.

Dynamical complexity explains both persistence and abrupt shifts in climate data — and demands that we change our expectations about future behaviour from slow and gradual to abrupt and potentially large.

In turn, temperature change affects atmospheric water vapor as well as the more dynamical components of equator - to - pole insolation and of temperature gradients that vary on timescales of decades to hundreds of years.

The observational and modeling results of the teleconnections linked to AMOC changes (including the dynamical response of vertical wind shear over the main development region of Atlantic hurricanes) suggest an important role of the AMOC in the AMV and the multidecadal variability of the Atlantic major hurricane frequency.

It is emergent behviour in a complex dynamical system characterised by changes in ocean and atmospheric circulation and consequential changes in cloud radiative forcing.

«The reason the Arctic and Antarctic did not get really mentioned in the arctic is because the dynamical changes that relate to dry and wet areas (in the region) is just not well - known,» he said.

More broadly, variations in the attenuation of visible radiation in the upper ocean, which directly relates to changes in ZSD, alter local heating and, consequently, have an effect on the thermal and fluid dynamical processes for the ocean - atmosphere system.

Abstract The purpose of this review - and - research paper is twofold: (i) to review the role played in climate dynamics by fluid - dynamical models; and (ii) to contribute to the understanding and reduction of the uncertainties in future climate - change projections.

In isothermal equilibrium, the system is in perfect force balance, there is no net dynamical transport of mass up or down, no net change whatsoever of gravitational potential energy — but heat conduction still functions to maintain equal temperature and restore equilibrium after a perturbatioIn isothermal equilibrium, the system is in perfect force balance, there is no net dynamical transport of mass up or down, no net change whatsoever of gravitational potential energy — but heat conduction still functions to maintain equal temperature and restore equilibrium after a perturbatioin perfect force balance, there is no net dynamical transport of mass up or down, no net change whatsoever of gravitational potential energy — but heat conduction still functions to maintain equal temperature and restore equilibrium after a perturbation.

An outstanding question, however, is whether the frequency and / or intensity of these dynamical features are changing in response to human - caused climate change, and in...

Dynamical effects arising from changes in atmospheric pressure also play a role in distributing meltwater, as do geostrophic ocean currents that flow along the lines where pressure gradients are counterbalanced by the Coriolis effect associated with the Earth's rotation.

In the last 10 years, downscaling techniques, both dynamical (i.e. Regional Climate Model) and statistical methods, have been developed to obtain fine resolution climate change scenarios.

The estimate's dynamical consistency allows for the comprehensive attribution of steric changes in terms of advection, diffusion, and surface buoyancy exchange processes.

Wang et al. (2012b) force the dynamical core of an atmospheric general circulation model with warming in the tropical troposphere that mimics the effects of climate change there.

Dynamical and thermodynamical causes of large - scale changes in the hydrological cycle over North America in response to global warming

Jiacan Yuan is a climatologist who is interested in understanding the fundamental dynamical processes in the atmosphere and improving climate models, which could give us better predictive power and risk assessment of the changing climate.

The dynamical mechanism — control variables that push the system past a threshold triggering a cascade of changes — is the key to understanding the changing trajectory of 20th century, the current hiatus, abrupt variability over the Holocene and longer and the uncertainties in anticipating 21st century climate evolution and longer.

It includes step changes at climate shifts that show that cloud changes are involved in the dynamical mechanism at the heart of climate.

Tamino you stated: «There are lots of fluctuations and lots of dynamical processes, but over the entire globe and over long time spans it's the changes in energy inputs that dominate the trend.

Stratospheric temperatures, particularly near the pole are also significantly influenced by dynamical changes, and in particular, the strength of the More»

For many of the basic dynamical elements, tendencies are ambiguous, and changes in sign (magnitude, position) can usually be argued in either direction.

Concerning the impact on extreme temperature events (winter cold spells, summer heat waves), these dynamical changes appear to be secondary compared to the long - term warming trend that results in fewer and less intense winter cold spells, and more frequent and intense summer heat waves in mid-latitudes.