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Abstract

In the six years since the IPCe's Third Assessment
Report (TAR), significant progress has been made in
understanding past and recent climate change and in
projecting future changes. These advances have arisen
from large amounts of new data, more sophisticated
analyses of data, improvements in the understanding
and simulation of physical processes in climate models
and more extensive exploration of uncertainty ranges
in model results. The increased confidence in climate
science provided by these developments is evident in
this Working Group I contribution to the IPCe's Fourth
Assessment Report.

While this report provides new and important policyrelevant
information on the scientific understanding of
climate change, the complexity of the climate system
and the multiple interactions that determine its behaviour
impose limitations on our ability to understand fully the
future course of Earth's global climate. There is still an
incomplete physical understanding of many components
of the climate system and their role in climate change.
Key uncertainties include aspects of the roles played by
clouds, the cryosphere, the oceans, land use and couplings
between climate and biogeochemical cycles. The areas of
science covered in this report continue to undergo rapid
progress and it should be recognised that the present
assessment reflects scientific understanding based on the
peer-reviewed literature available in mid-2006.

Item Type:	Book Section
Authors/Creators:	Solomon, S and Hegerl, GC and Heimann, M and Hewitson, B and Hoskins, BJ and Joos, F and Jouzel, J and Kattsov, V and Lohmann, U and Matsuno, T and Molina, M and Qin, D and Nicholls, N and Qin, D and Raga, G and Ramaswamy, V and Ren, J and Rusticucci, M and Somerville, R and Stocker, TF and Stouffer, RJ and Whetton, P and Manning, M and Wood, RA and Wratt, D and Alley, RB and Berntsen, T and Bindoff, NL and Chen, Z and Chidthaisong, A and Gregory, JM
Publisher:	Cambridge University Press
Additional Information:	© Intergovernmental Panel on Climate Change 2007
Item Statistics:	View statistics for this item

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