Sentences with phrase «sheet model sensitivity»
For example, a recent ice sheet model sensitivity study finds that incorporating the physical processes of hydrofracturing of ice and ice cliff failure increases their calculated sea level rise from 2 meters to 17 meters and reduces the potential time for West Antarctic collapse to decadal time scales.
https://www.huffingtonpost.com/ Not exact matches
A new three - dimensional higher - order thermomechanical ice sheet model: Basic sensitivity, ice stream development, and ice flow across subglacial lakes.
A 3 - D model for the Antarctic ice sheet: a sensitivity study on the glacial - interglacial contrast.
They also speak about sea level sensitivity as being higher than current ice sheet models show.
The standard climate sensitivity and climate model do not in - clude effects of «slow» climate feedbacks such as change in ice sheet size.
The periods considered were mainly the Pleistocene ice age cycles, the LGM and the Pliocene, but Paul Valdes provided some interesting modeling that also included the Oligocene, the Turonian, the Maastrichtian and Eocene, indicating the importance of the base continental configuration, ice sheet position, and ocean circulation for sensitivity.
But what the GSL now says is that geological evidence from palaeoclimatology (studies of past climate change) suggests that if longer - term factors are taken into account, such as the decay of large ice sheets, the Earth's sensitivity to a doubling of CO2 could itself be double that predicted by most climate models.
Climate models provide sensitivity estimates that may not fully incorporate slow, long - term feedbacks such as those involving ice sheets and vegetation.
They also speak about sea level sensitivity as being higher than current ice sheet models show.
The sea - level estimates are consistent with those from delta18O curves and numerical ice sheet models, and imply a significant sensitivity of the WAIS and the coastal margins of the EAIS to orbital oscillations in insolation during the Mid-Pliocene period of relative global warmth.
The essence of the comment is a model that we put together that (I think) is the simplest that you can derive that includes a carbon cycle, ice sheets, and allows for the standard «Charney» sensitivity (ECS) and the ESS to vary independently.
The people giving presentations, who know ice as well as anyone, made a clear case not only that we have little understanding of ice dynamics, but that (as one of them put it) the main sources of uncertainty in the models are all in the direction of underestimation of the sensitivity of ice sheets to a temperature rise.
It is possible that effective climate sensitivity increases over time (ignoring, as for equilibrium sensitivity, ice sheet and other slow feedbacks), but there is currently no model - independent reason to think that it does so.
Well it depends on whether you are talking about Climate Sensitivity (Charney sensitivity... which is modelled) or Earth System Sensitivity (where things like ice sheet extent, vegetation cover etc are regarded as able to respond quickly tSensitivity (Charney sensitivity... which is modelled) or Earth System Sensitivity (where things like ice sheet extent, vegetation cover etc are regarded as able to respond quickly tsensitivity... which is modelled) or Earth System Sensitivity (where things like ice sheet extent, vegetation cover etc are regarded as able to respond quickly tSensitivity (where things like ice sheet extent, vegetation cover etc are regarded as able to respond quickly to warming).
These values have been estimated using relatively simple climate models (one low - resolution AOGCM and several EMICs based on the best estimate of 3 °C climate sensitivity) and do not include contributions from melting ice sheets, glaciers and ice caps.
Probabilistic projections with the box model allowed consideration of all major uncertainties, such as modeled temperature sensitivities to CO2 concentrations, Greenland Ice Sheet melt sensitivities to temperature changes, and AMOC sensitivities to both temperature and Greenland Ice Sheet melt changes.
Pfeiffer, M. & Lohmann, G. Greenland ice sheet influence on last interglacial climate: global sensitivity studies performed with an atmosphere — ocean general circulation model.
(sarc) The correct answer to all political questions about TCR global sun - induced ozone recovery sensitivity (50 % undefined or rather obscurely neglecting the modelling of bark beetles and their modelled «black carbon» on ice sheets.)
Altogether, the empirical data support a high sensitivity of the sea level to global temperature change, and they provide strong evidence against the seeming lethargy and large hysteresis effects that occur in at least some ice sheet models.
Geological evidence from studies of past climate change now suggests that if longer term factors are taken into account, such as the decay of large ice sheets and the operation of the full carbon cycle, the sensitivity of the Earth to a doubling of CO2 could be double that predicted by most climate models.
«Third, in a period when ocean basins were similar to modern, ice age climate sensitivity to pCO2 changes is underestimated by climate models even when long term changes in solar forcing and ice sheet size and distribution are taken into account, implying that internal positive feedbacks are stronger than previously thought.»
«Altogether, the empirical data support a high sensitivity of sea level to global temperature change, and they provide strong evidence against the seeming lethargy and large hysteresis effects that occur in at least some ice sheet models.»