] On Behalf Of John Nissen
Sent: Saturday, July 23, 2011 6:46 PM
To: kcalde...@stanford.edu
Cc: em...@lewis-brown.net; geo-engineering grp; John Nissen
Subject: Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise
reference [1]
http://unfccc.int/essential_background/convention
johnnissen2...@gmail.com
Cc: geo-engineering grp geoengineering@googlegroups.com
Sent: Monday, July 25, 2011 11:49:48 AM
Subject: Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise
For an alternative perspective on committed warming, note the following:
Comment in SciAm
http
Ken,
We all like to be optimistic - it is a human characteristic. But if you
accept what is happening to the Earth System, as being discovered by people
like Hansen, Wadhams and Shakhova (on climate sensitivity, sea ice retreat
and Arctic methane respectively), then the situation is dire for
reference [1]
http://unfccc.int/essential_background/convention/background/items/1355.php
On Sat, Jul 23, 2011 at 11:43 PM, John Nissen johnnissen2...@gmail.comwrote:
Ken,
We all like to be optimistic - it is a human characteristic. But if you
accept what is happening to the Earth System,
-engineering grp; John Nissen
Subject: Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise
reference [1]
http://unfccc.int/essential_background/convention/background/items/1355.php
On Sat, Jul 23, 2011 at 11:43 PM, John Nissen johnnissen2...@gmail.com wrote:
Ken,
We all like
Dear Ken:
I love your sentence about economists. The problem is that they are often
consulted by the press as experts whether or not they are, and they don't
always caveat their statements to indicate they are not scientists.
The best,
Bill
On Jul 22, 2011, at 11:03 AM, Ken Caldeira
...@cloudworld.co.uk
Subject: Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise
Date: Sun, 24 Jul 2011 19:05:59 +
Dear Ken:
I love your sentence about economists. The problem is that they are often
consulted by the press as experts whether or not they are, and they don't
always caveat
]
On Behalf Of Fulkerson, William
Sent: Sunday, July 24, 2011 3:06 PM
To: kcalde...@gmail.com
Cc: John Nissen; em...@lewis-brown.net; geo-engineering grp; John Nissen
Subject: Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise
Dear Ken:
I love your sentence about economists. The problem
to: Geoengineering Now!
Kind regards,
Albert
_
From: wf...@utk.edu
To: kcalde...@gmail.com
CC: johnnissen2...@gmail.com; em...@lewis-brown.net;
geoengineering@googlegroups.com; j...@cloudworld.co.uk
Subject: Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise
Date: Sun, 24 Jul
[mailto:geoengineering@googlegroups.com]
On Behalf Of Veli Albert Kallio
Sent: Sunday, July 24, 2011 4:23 PM
To: wf...@utk.edu; kcalde...@gmail.com
Cc: John Nissen; em...@lewis-brown.net; Geoengineering FIPC; John Nissen;
Peter Wadhams
Subject: RE: [geo] Jim Hansen : 1 to 2DegC and 20m sea level
John,
I have no doubt that, from the perspective of many extant species and
less-fortunate humans, we are indeed in dire straits.
If I were convinced that stratospheric aerosols would work as advertised and
that there would be no unforeseen or unanticipated repercussions, and that
some sort of
Values and norms do and must guide what questions we ask, but they cannot be
allowed to influence our scientific answers.
Scientific papers should contain empirical statements and not value-based
judgments.
On Sat, Jul 23, 2011 at 4:44 PM, Jerome Whitington
jwhiting...@dartmouth.edu wrote:
limited
experiments.
From: geoengineering@googlegroups.com [mailto:geoengineering@googlegroups.com]
On Behalf Of Ken Caldeira
Sent: Saturday, July 23, 2011 10:37 AM
To: John Nissen
Cc: em...@lewis-brown.net; geo-engineering grp; John Nissen
Subject: Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea
I sure wish he would avoiding putting prescriptive statements in ostensibly
scientific papers. Scientific papers should contain descriptive, not
prescriptive, statements.
That said, I think he is right about long-term climate sensitivity being
higher than the century-scale sensitivity inferred
Dear Ken,
I've already looked at this interesting paper [1], from Jim Hansen and
Mikiko Sato - but I'd not read before of his conjecture about rate of ice
mass loss doubling per decade, producing many metres of sea level rise this
century. But the implication is that the situation can be saved
Two points:
I am not opposed to scientists making prescriptive statements in their roles as
citizens.
However, I am opposed to prescriptive statements (statements about what we
should do) in peer-reviewed scientific papers.
I think science is about establishing objective facts about the
Hi,
here is a recent paper from Jim Hansen,including some figures I've read
before, which stunned me:
In the early Pliocene global temperature was no more than 1-2°C warmer
than today, yet sea level was 15-25 meters (50-80 feet) higher.
best wishes,
Emily.
*Paleoclimate Implications:
17 matches
Mail list logo
