As you’ve likely seen in the news, the IPCC’s fourth report is due out soon.
There’s a summary available online: Climate Change 2007: The Physical Science Basis – Summary for Policymakers
You can obtain at:
http://ipcc-wg1.ucar.edu/
Reuters has an item with some of the main details:
FACTBOX-U.N. climate panel report
– makes for grim reading
see also the Independent:
Global warming: the final warning
According to yesterday’s UN report, the world will be a much hotter place by 2100. This will be the impact …
Starts with scenario of 2.4C rise in temp, for which impacts forecast include:
In North America, a new dust-bowl brings deserts to life in the high plains states, centred on Nebraska, but also wipes out agriculture and
cattle ranching as sand dunes appear across five US states, from Texas in the south to Montana in the north.
Rising sea levels accelerate as the Greenland ice sheet tips into irreversible melt, submerging atoll nations and low-lying deltas.
and continues from there; by maximum potential rise of 6.4C: