I know what a lot of people are thinking when they look at the Arctic sea ice graph since September 1st – my oh my how has the ice reduced! Indeed just take a look at the numbers themselves:
September 1: 5,332,344 sq km
September 18: 4,813, 594 sq km
That’s a drop in area of over 500,000 sq km. Still, I’m going to say that the ice has grown. You think it’s preposterous, right?
But now take a look at the following chart that compares September 1 ice to September 18 ice. Which would you prefer to be standing on?
These charts are taken from: http://www.ijis.iarc.uaf.edu/cgi-bin/seaice-monitor.cgi
Which ice looks thicker (more concentrated)?
Don’t sweat the ice area statistics. The thickness (er, concentration) is much greater today, and we could even say the volume is likely more. Arctic temperatures above 80°N have been colder this summer and September. The ice area will rebound quickly, of course. I projected a 5.75 million sq km min. for 2011 a couple weeks back. I’m sticking to it.