Re: functionally Re: [geo] September sea-ice gone by end of century? (or much sooner)

2011-07-19 Thread Emily
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

Re: [geo] September sea-ice gone by end of century? (or much sooner)

2011-07-19 Thread Andrew Revkin
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

RE: [geo] September sea-ice gone by end of century? (or much sooner)

2011-07-19 Thread Veli Albert Kallio
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

RE: [geo] September sea-ice gone by end of century? (or much sooner)

2011-07-19 Thread Eugene Gordon
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)

RE: [geo] September sea-ice gone by end of century? (or much sooner)

2011-07-19 Thread Andrew Lockley
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

Re: [geo] September sea-ice gone by end of century? (or much sooner)

2011-07-18 Thread rongretlarson
Ken (cc list ) I have tried (as a rank amateur observer, not participant) to follow this retreatjng September arctic ice topic for the last 5 years. I have come to a different conclusion than expressed in your two articles.. The website I have found most valuable can be located by remembering

functionally Re: [geo] September sea-ice gone by end of century? (or much sooner)

2011-07-18 Thread Emily
Hi, a term used for species extinctions comes to mind - when a species is reduced to such a small number of animals in the wild but isn't extinct, it is sometimes referred to as 'functionally extinct'. If we consider the functions of the Arctic sea ice - in areas it is pretty near