David,
The residence time of oxygen in the atmosphere + ocean + biosphere with
respect to the lithosphere is millions of years.
There are about 4 x 10 ** 19 mol of O2 in the atmosphere. The rate of
removal of this O2 by organic carbon weathering is about 4 x 10 ** 12 mol
per year. I am not sure
Hi all, I'd propose you put this hypothesis to Dan Laffolley (you can google
him).
There are so many responses to this I am overwhelmed and can't respond
coherently. Apart from anything else, my understanding is that decay of ocean
matter would release noxious gases. So while there may be O2,
Andrew,
Please respond to what I said and not what you imagine I said.
The issue has to do with a hypothetical case of sterilization of the
oceans. There was no reference to climate change in my statement.
I challenge anyone to construct a plausible causal chain that would lead
from
For a start, oceans provide 12% of the global food supply. Losing all that
could be the tipping point on its own, as a starving society unravels into
a vicious circle of conflict, de-industrialisation and de-urbanisation.
However, a far more serious concern is the change in the oceans which would
And I challenge anyone to construct a plausible narrative in which human
civilization survives the extinction of life in the oceans.
Oliver.
On 08/06/2013 10:01, Ken Caldeira wrote:
Andrew,
Please respond to what I said and not what you imagine I said.
The issue has to do with a
Excuse my ignorance - AGU? EGU?
What I do know is that people very often omit any discussion of ARW in
their papers, reviews, etc, on CO2 drawdown. And that it is entirely
absent from the policy debate. Probably because it comes in at a tenth
of the cost, and zillionth the risk, of their
It makes my life in the conservation community very hard to defend
geo-engineering when statements like this are out.
I am not going to try to engage in this scenario but invite a discussion with
oceanographers and marine biologists if anyone is interested in exploring this
hypothesis.
I was asked a question in a scientific conference and I gave the most
scientifically defensible answer I could at the time. I still believe I
was correct.
The talk at the conference was videotaped and in this world everything that
you say lives forever. I am not going to start censoring myself
In contrast I have been involved in IEEE (while also maintaining a serious RD
job outside IEEE ) since ~1960 having run conferences, served on publication
committees, founded and served as an assistant editor on 2 publications, and
founded and run one IEEE society, served on the IEEE awards
There are some differences of perspective that might limit the membership
of such a society. There are those who are already convinced that GE (or a
particular form of it) is a necessity and those that are convinced that GE
research is a necessity. Then there are those who are concerned with a
If the ocean was sterilized, then presumably there wouldn't be any marine
microbes to consume O2 or generate H2S, CH4, etc. Good final exam written
question for Biogeochemistry 476 - what would happen to the earth?
As for McNuggets, some Asia countries get 40% of their protein from the ocean.
Andrew and list, cc Eugene
1. I suggest that Andrew's dollar amounts indicated below are probably needed,
but very unlikely to be found - maybe even after decades.
2. The reason is twofold
a. Too many disciplines - career advancement demands publication in
journals close to your
It seems obvious that you value ocean life, as you say quite highly. In
your AGU presentation you called what is happening to the oceans a *tragedy.
*I made sure to include the sentence containing that word in the partial
transcript of your remarks that I posted here.
I'm one of those who
On Sat, Jun 8, 2013 at 1:52 PM, David Lewis jrandomwin...@gmail.com wrote:
I'm one of those who tend to believe civilization can only go so far down
a path of thoughtless interference with the planetary systems. I haven't
tried to assemble anything like a case that might convince a
Greg raises a good point.
The riverine organic carbon flux is on the order of 10**14 mol / yr. If
there are about 4 x 10**19 mol of O2 in the atmosphere, this would give a
residence time of O2 in the atmosphere relative to microbial decomposition
in the ocean of several hundred thousand years.
I
There's no postulated route to a fully abiotic ocean. The closest parallel
is an anoxic ocean, dominated by archea etc. - and perhaps with sulphurous
chemistry dominating the mixed layer.
An alternative is an ocean shocked by acidification, overfishing, dead
zones and cascade extinctions.
Surely
Ron:
Good comments. You win some and you lose some.
However, you cannot sort out the winners and losers without trying. We had
solid state, semiconductor and gas lasers, UV, visible, IR and far IR. We made
high bandwidth optical communications happen as well as local loop. Many
military
Fred:
You give some good reasons not everyone would belong or want to belong but
right now no one belongs. Perhaps membership might not include everyone but it
would be a viable group and it would enhance the credibility of geoengineering.
Belonging to a particular group (possibly among
Key point : Aladdin argued that IP law is a de facto form of governance
when there is no other meaningful legal regime, as is the case for
geoengineering
http://gcrinstitute.org/aladdin-diakun-gives-public-lecture-on-geoengineering-and-ip-law/
On Thursday 16 May, GCRI hosted an online lecture by
Click the link! This makes no sense without the graphs!
https://blogs.nottingham.ac.uk/makingsciencepublic/2013/06/05/mitigation-adaptation-geoengineering-patterns-of-discourse-patterns-of-mystery/
Mitigation, adaptation, geoengineering: Patterns of discourse, patterns of
mystery
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