absolutely.
now we need a way to communicate this.
A few years ago, we moved from talking about the extent to depth and volume.
Perhaps this September, a new narrative can emerge about the
functionality of the sea ice rather than the extent.
I think this reinforces the need for active
http://dotearth.blogs.nytimes.com/2010/03/22/new-light-shed-on-north-pole-ice-trends/
The bottom line, expressed here before, is that no one should expect to find
much broad meaning in short-term variability in Arctic sea ice — in one
direction or the other. If there is a death spiral, expect a
I would just ask people to draw attention to sea ice volume models. In addition
to look at i.e. Cryosphere Today how the terrestrial defrost progressed this
year, and check out temperature legend maps for North Canada and Siberia. How
many natural processes behave the same way on their very
At last some sanity.
From: geoengineering@googlegroups.com
[mailto:geoengineering@googlegroups.com] On Behalf Of Andrew Revkin
Sent: Monday, July 18, 2011 1:05 PM
To: kcalde...@gmail.com
Cc: geoengineering
Subject: Re: [geo] September sea-ice gone by end of century? (or much
sooner)
Schaeffer et al have already estimated c fluxes from permafrost at ~1.8Gtpa
over coming decades. Some of these fluxes may be methane, and the process
will be accelerated by feedbacks
However, it is likely of course that premature thaw of the arctic will
accelerate this process.
I wonder if
In discussing what defines functionally extinct ice, it's also clear that
the term ice-free arctic is not well defined: if ice extent is generally
defined as the area with 15% continuous ice cover, then the whole arctic as
ice free seems to be starting to get defined in some circles as that
