Study Finds No Link Tying Disaster Losses to Human-Driven Warming - Dot Earth Blog - NYTimes.com

The pull of the “ front-page thought” and the eagerness of climate campaigners to jog the public have sometimes created a tendency to tie mounting losses from weather-related disasters to human-driven global warming.

But finding a statistically robust link between such disasters and the building human climate influence remains a daunting task. A new analysis of nearly two dozen papers assessing trends in disaster losses in light of climate change finds no convincing link.
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None of this negates the importance of moving to limit emissions of long-lived greenhouse gases...

[Revkin, June, 2008]: Federal Report: Warming = More Harmful Climate Extremes - Dot Earth Blog - NYTimes.com

The first thorough federal review of research on how global warming may affect extreme climate events in North America forecasts more drenching rains, parching droughts (especially in the Southwest), intense heat waves and stronger hurricanes if long-lived greenhouse gases continue building in the atmosphere.
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These strong conclusions have a lot of scientists and policy experts pushing for prompt action, after decades of waffling, both to cut the odds of the worst outcomes by curbing greenhouse gas emissions and by boosting resilience to climate extremes — whatever the cause.