In a speech in Oslo on September 6, John Holdren, President Obama’s science advisor, suggested that ‘global warming’ be replaced by ‘global climate disruption’ as a more accurate expression. As The New York Times reported it, "changes to the climate are rapid when viewed in terms of the capacity of society and ecosystems to adjust; the impact is distributed unevenly; and the outcome will be overwhelmingly negative for most of the globe." Global warming implies slow changes that might even be benign.
Holdren (an old friend of mine and one of the smartest people in the universe) has long been a lightning rod for the right wing climate deniers owing largely to his long association with the population biologist Paul Ehrlich, with whom he wrote several books. Following Dr. Holdren’s speech, the right blogosphere immediately accused the administration of playing politics, of trying to "rebrand" the subject preparatory to another push for a climate bill next year. The administration denied there’s any rebranding going on.
I’m no expert, but John’s suggestion makes good sense to me.