Not a good day any way you look at it. If you don't believe in global warming, this is just more evidence that you're wrong. And, if you do believe, the most recent satellite data I spose is just more to worry about... indications of a strong possibility the extent of ice in the could be at a new low before melting reverses later this month.
The National Snow and Ice Data Center says the ice extent is already below the minimum levels reached in all other years except for the 2007. So, even if the ice-covered area begins to grow again as of today, 2011 would already have the second-lowest ice coverage in the Arctic ever measured. In addition to 2007, 2008 and 2010 are currently the 2nd and third lowest ice years.
The minimum ice mark will only be confirmed after a clear pattern of ice expansion returns, however the minimum could be reached any time between today and the next 1-3 weeks.