Using liquid air to seal methane vents may well work. Using it for general
cooling of the sea or land surface will not.
Oxides of nitrogen are critical in the formation of hydroxyl radicals. They
therefore play a key role in the breakdown of methane. Although greenhouse
gases in their own right
On the issue of using Lair as a vent sealant, I may be wrong, but, I do
believe the ice formed would most likely float away. And, a vent would be
most likely more of a diffused field of bubble streams as opposed to a
central "vent". Also, capping such a vent with even cement will be
eventually
You should be able to detect methane release using gas samplers on buoys or
the sea bed. Hydrophones may also detect bubbles. Autonomous ships could
also be used, or data could be collected from any existing marine traffic.
Aerial imaging could detect larger releases.
Putting liquid air into the s
Unfortunately, my personal belief is that we have already failed (time wise)
and that the policy makers will not recognize the need for large scale
efforts in time to avoid the first tipping point from developing.
Look at the arctic data for April. There is an unusually high temperature
formation
The inclusion of the word "only" renders Josh's statement false:
In particular - only Biochar (and not all of CDR) provides rather than
requires energy AND Biochar is the only CDR approach that provides out-year
climate benefits.
Biomass energy combined with carbon capture and geologic storage (B
Please note that I did not make this statement, I leave it to Ron to address
...
Josh
On Mon, May 9, 2011 at 8:35 AM, Ken Caldeira <
kcalde...@carnegie.stanford.edu> wrote:
> The inclusion of the word "only" renders Josh's statement false:
>
> In particular - only Biochar (and not all of CDR) pr
Josh, Ken, List
I also am perplexed. By "out year", I meant several things: increased soil
productivity, reduced fertilizer requirements, reduced irrigation needs and
likely less N2O release. Possibly for millennia, certainly centuries.
Energy provision follows from the desirable use
Tim and list
I should have mentioned both BECCS and enhanced weathering in my list of
comparisons. But neither violate the twin claims re Biochar I am making:
energy release (carbon neutral) and out-year (some carbon-neutral, some
carbon-negative) benefits.
I also am not saying these othe
Unclear on the statement “only Biochar ...provides rather than requires
energy...” Unless I’m missing something biochar requires massive solar energy
input, meaning massive land (and/or ocean?) area management, and probably water
and nutrient management as well (additional energy requirements?)
John and All-
Andrew makes a great point. If methane release tends to be limited to
vents or so-called "hotspots", and the number of vents is a reasonable
amount, the use of Lair or LN2 to freeze and seal these vents becomes
MUCH more feasible than trying to cool/refreeze large permafrost
regions.
John and All-
Mr. Lockley makes a great point. If methane release tends to be
limited to vents or so-called "hotspots", and the number of vents is a
reasonable amount, the use of Lair or LN2 to freeze and seal these
vents becomes MUCH more feasible than trying to cool/refreeze large
permafrost reg
Prof. Rau:
1. It will take a while to get around the pay wall for the House article [ ^
House, K.Z., House, C.H, Schrag, D.P., Aziz, M.J. Electrochemical acceleration
of chemical weathering as an energetically feasible approach to mitigating
anthropogenic climate change. Environ. Sci. Technol.
Greg, List, etal (Hoping that Dr. Hansen finds time to read little items like
this - if from Dr. Rau)
see inserts below
- Original Message -
From: "Greg Rau"
To: rongretlar...@comcast.net
Cc: "geoengineering" ,
joshuahorton...@gmail.com, "James Hansen" , "James
Hansen"
Sent:
I would like to offer two suggestion.
There is growing use of Biochar in china at the consumer level through this
type of product. http://gasifiers.bioenergylists.org/singfieldgas Close
evaluation
of that trend may prove insightful to the Biochar issue. Please note that
this type of reactor is
Please, transpose that situation upon this one.
Geologic Sequestration of Carbon Dioxide
http://water.epa.gov/type/groundwater/uic/wells_sequestration.cfm Carbonated
well
water?
Or
http://www.canadiancleanpowercoalition.com/pdf/CTS7%20-%20Pipe%20Costs.pdf
Texas
oil fields are notorious leake
"This report explores direct air capture (DAC) of carbon dioxide (CO2) from the
atmosphere with chemicals. DAC involves a system in which ambient air flows
over a chemical sorbent that selectively removes the CO2. The CO2 is then
released as a concentrated stream for disposal or reuse, while the
Hi All,
This is a 1hr. lecture that is highly informative as to the state of
knowledge on the issue.
http://www.youtube.com/watch?v=mSTm6cZjO14&feature=related
In dealing with vents, one possible path came to mind as I watched the
lecture. That is, accelerating methane aerobic oxidation thr
"This technique would require a wave/solar powered buoy feeding a microbubble
stream(s) down the anchoring line to the appropriate depth. This type of buoy
could also function as a monitoring station reporting multiple sounding via
sat. link."
There is even much better systems such as Mixox,
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