Julia Whitty on the 2011 Arctic report card
From Deep Blue Home and NOAA’s 2011 Arctic report card:
The report doesn’t say ‘tipping point.’ But in fact it might well have been a tipping point. Here’s what this tippinglike point looks like:
- Persistent decline in the thickness of sea ice cover
- Persistent decline in the summer extent of sea ice cover
- A warmer upper ocean
- A fresher upper ocean
The tipping-ish part is that the system may not return to what it was before 2006. In other words, another new normal.