Here's a graph showing the extent of arctic sea ice as measured directly and indirectly for the last several hundred years:
Solid red line is the reconstructed 40 year smoothed, late-summer Arctic sea ice extent from Kinnard et al. (2011). Shaded area shows 95% confidence interval. Blue dashed line shows modern observations.
This graphic is from Skeptical Science, where you can also download a higher res version and learn more about the background for these data. Also, on that page is a link to a large number of useful graphics related to climate change.
.
- Log in to post comments
More like this
Every year the sea ice that covers the northern part of the Earth expands and contracts though the winter and the summer. The minimum extent of the sea ice is usually reached some time in September, after which it starts to reform.
Human caused greenhouse gas pollution has increased the surface…
My first job as an archaeologist in Boston (having moved there from New York) had to do with Deer Island, the northern of two islands that separate Boston's Inner and Outer Harbors. The actual archaeology was uninteresting but the historical research was fascinating. Among the things I learned is…
Climate Scientist John Abraham and I just finished a session of FtBConscience on Climate Change and during that session we promised to provide some useful links. We also used some graphics during the session. Below are the links and the graphics!
First, here is the video of the session:
Climate…
Sea ice again.
I was reading Gareth who had been reading Monbiot. And so I did too. After I'd waded through the goo and the dribble about Bush, the first item of substance was A new summary of the science published since last year's Intergovernmental Panel report suggests that - almost a century…
Here are a few links with that graphic:
http://www.skepticalscience.com/Arctic-sea-ice-hockey-stick-melt-unprec…
http://skepticalscience.com/past-Arctic-sea-ice-extent.htm
http://skepticalscience.com/graphics.php
Global warming is a lie because I hate Al Gore!
Global warming is a lie because scientists are stupid!
Global warming is a lie because my car needs gas!
Global warming is a lie because Lush Rimballs says so!
Global warming is a lie because it goes against my politics!
Global warming is a lie because even if it is true, who doesn't like warm weather!
Global warming is a lie because it was cold in Winnipeg last winter!
Global warming is a lie because only Lord Jeebus can change the weather!
Answer that, you smarty pants libs!