Sentences with phrase «behaviour of ice sheets»

Since there is controversy over the subject of climate change, it is important to study the behaviour of ice sheets in the past, in order to predict what may happen in the futureThe study focused on «erratic» rocks, which are rocks that differ totally from the local sedimentary rocks and have been transported there by moving ice.

As well as using a model to predict the future, we can also use it to reconstruct ice sheets in the past, giving clues as to the behaviour of the ice sheet in different climate settings.

This could help predict the behaviour of the ice sheet in the future.

Not exact matches

These predictions are limited by a poor understanding of the recent changes observed in the Antarctic and Greenland ice sheets, and a lack of knowledge about the variability of ice sheet behaviour under a warming climate.

Diagnostic modelling can be used to improve the understanding of the processes controlling the behaviour of a particular ice stream, or to study the importance of one or more physical process in an ice sheet in general.

Constraints such as these are important for numerical models that attempt to replicate and predict the past and future behaviour of the Antarctic Ice Sheet.

Terrestrial glacial geologists (such as ourselves) can gain information of past glacial behaviour from mapping and dating former ice sheet extents, and determining the rates at which they receded and thinned, [e.g., 16, 17 - 19].

Pine Island Glacier (PIG) in West Antarctica is a good example of the value of both prognostic and diagnostic modelling in understanding and predicting ice sheet behaviour.

``... an understanding of the behaviour of the marine - based West Antarctic ice sheet (WAIS) during the «warmer - than - present» early - Pliocene epoch (approx5 — 3 Myr ago) is needed to better constrain the possible range of ice - sheet behaviour in the context of future global warming....

the non linear has only recently with the advent of powerful computers started recieving proper scientific scrutiny but it is unclear to me that the science of the past 300 years is as useful because the non linear response to forcings etc is messy and not as predcitable it would be fair to say and therefore not scienttifically rigourus enough and hence we end up with known unknowns of being unable to predict future behaviour of such things as ice sheets.

For example, Hansen's recent paper on Scientific Reticence is quite explicit that much of important physics of ice sheets is not included in the models, hence his raising of matters to do with nonlinear behaviour (eg disintegration) of ice sheets.

However, Rick found that in more recent years, more articles discussed the uncertainty of glacier and ice - sheet behaviour and reported a greater range of sea - level rise for 2100, reflecting the greater uncertainty in the scientific literature.

Compare the SAR and the TAR for example, and since then we have many more proxy reconstructions to consider, the satellite analyses corrected, new data about energy imbalances, better observations of ocean currents and temperature, ice sheet behaviour in Greenland and Antarctica and much much more.

Insight into past ice - sheet behaviour also will aid predictions of future ice - sheet stability.

Cook, Carys, Flierdt, Tina van de, Williams, Trevor, & et al. (2013) Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth.

A similar behaviour might be occurring on the Amundsen Sea sector of the west Antarctic Ice Sheet (WAIS), where Pine Island and Thwaites glaciers have lost significant portions of their fringing ice shelves, and show signs of recent acceleratiIce Sheet (WAIS), where Pine Island and Thwaites glaciers have lost significant portions of their fringing ice shelves, and show signs of recent acceleratiice shelves, and show signs of recent acceleration.

But in Bamber's second calculation the relatively sophisticated energy balance model, which he believes better represents ice sheet behaviour, gave a threshold of 8 degrees for irreversible melting of Greenland — double the previously published threshold.

But in Bamber's second calculation the relatively sophisticated energy balance model, which he believes better represents ice sheet behaviour, gave a threshold of 8 degrees for irreversible melting of Greenland - double the previously published threshold.

A major limitation is the fact that the calibration phase for these semi-empirical models does not cover the range of climate - system behaviour that might be expected for the 21st century, i.e., significant loss of ice from the large polar ice sheets.

Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth.