Sentences with phrase «simulated warming patterns»

Not exact matches

The explanation for this could be that the global warming is not yet strong enough to trigger the changes in precipitation patterns that climate models simulate,» reports Charpentier Ljungqvist.

The observed patterns of warming, including greater warming over land than over the ocean, and their changes over time, are only simulated by models that include anthropogenic forcing.

Wallace, J. M. & Johanson, C. M. Simulated versus observed patterns of warming over the extratropical northern hemisphere continents during the cold season.

The simulated change of GM in the last 30 yr has a spatial pattern that differs from that during the Medieval Warm Period, suggesting that global warming that arises from the increases of greenhouse gases and the input solar forcing may have different effects on the characteristics of GM precipitation.

Recent work (e.g., Hurrell 1995, 1996; Thompson and Wallace 1998; Corti et al., 1999) has suggested that the observed warming over the last few decades may be manifest as a change in frequency of these naturally preferred patterns (Chapters 2 and 7) and there is now considerable interest in testing the ability of climate models to simulate such weather regimes (Chapter 8) and to see whether the greenhouse gas forced runs suggest shifts in the residence time or transitions between such regimes on long time - scales.

The simulated three - dimensional spatial pattern of the temperature changes induced by increasing concentrations of a well - mixed greenhouse gas, such as carbon dioxide, is complicated and varies from model to model, but one common aspect is the tendency for the lower to mid-troposphere to warm more rapidly than the surface, except over high latitudes.

What was done, was to take a large number of models that could not reasonably simulate known patterns of natural behaviour (such as ENSO, the Pacific Decadal Oscillation, the Atlantic Multidecadal Oscillation), claim that such models nonetheless accurately depicted natural internal climate variability, and use the fact that these models could not replicate the warming episode from the mid seventies through the mid nineties, to argue that forcing was necessary and that the forcing must have been due to man.

It seems doubtful that emergent constraints will be able to provide a useful, reliable constraint on real - world ECS unless and until GCMs are demonstrably able to simulate the climate system — ocean as well as atmosphere — with much greater fidelity, including as to SST warming patterns under multidecadal greenhouse gas driven warming.

Models generally aren't very good at simulating changes in rainfall patterns to increasing GHG and resulting global warming.