year 2007

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection: Temperatures plummeted over the last year (2007-2008). If you look at this data from the Met Office Hadley Centre you can clearly see that in one year alone global temperatures dropped .6oC, an amount equal to the entire warming over the 20th century claimed by the IPCC. (click graph for a larger image in a new window) Answer: This argument represents a fundamental misunderstanding of the difference between weather and climate. Climate…

Arctic sea ice dropped to a record low in 2007, surpassing by a very striking margin (twenty four percent!) the previous record of two years ago.   Record Arctic Sea Ice Loss in 2007 Click here to view full image (69 kb) Large images Arctic, September 16, 2007 (1.3 MB JPG) Graph of Arctic Sea Ice Decline (200 KB PDF) This record is about the sea ice extent, or the area of ocean surface covered by ice, and does not even reflect the ice loss due to thinning of the ice pack. Factoring this thinning (up to 40% by some estimates) makes a dramatic observation even more foreboding…