Sentences with phrase «chapter on climate models»

The IPCC chapter on climate models appears to justify use of the models by saying they show an increase in temperature when CO2 is increased.

Not exact matches

The most common scenario type is based on outputs from climate models and receives most attention in this chapter.

Its seven chapters discuss the global climate models, forcings and feedbacks, solar forcing of the climate, and observations on temperature, the icecaps, the water cycle and oceans, and weather.»

JC note: Pursuant to Nic's post on «The IPCC's alteration of Forster & Gregory's model - independent climate sensitivity results,» he has sent a letter to Gabi Hegerl, who was coordinating lead author on chapter 9 of the IPCC AR4.

Several of my review comments, especially on Chapter 6 in the June review, speak directly to problems in the climate models.

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.

In most cases, these range from about 2 to 4.5 C per doubled CO2 within the context of our current climate — with a most likely value between 2 and 3 C. On the other hand, chapter 9 describes attempts ranging far back into paleoclimatology to relate forcings to temperature change, sometimes directly (with all the attendant uncertainties), and more often by adjusting model parameters to determine the climate sensitivity ranges that allow the models to best simulate data from the past — e.g., the Last Glacial Maximum (LGM).

The introduction to the first chapter, «Climate models and their limitations» cites the Rosenberg 2010 conclusion on uncertainties related to GCM outputs as bases for projecting climatic change impacts:

However, as Essex and McKitrick point out in the chapter on «Climate Theory versus Models and Metaphors» in their book «Taken by Storm,» that no computer model has a grid size small enough to include any of them.

To better assess confidence in the different model estimates of climate sensitivity, two kinds of observational tests are available: tests related to the global climate response associated with specified external forcings (discussed in Chapters 6, 9 and 10; Box 10.2) and tests focused on the simulation of key feedback processes.

Lupo worked on the climate models chapter about which he said, «It represents the problems and benefits of working with computer models as well as highlighting the current techniques, strategies, and shortcomings.»

This chapter focuses on process understanding and considers observations, theory and models to assess how clouds and aerosols contribute and respond to climate change.

I posted the comment on your blog because I thought you would be interested in the math of their stochastic model of climate fluctations in Chapter 7 and give an assesment of the their methodolgy.