Folks,
To point out the obvious, the results of Kwaitkowski et al may or may not
scale to smaller deployments, and the effects of smaller deployments are
likely to be regionally dependent.
I have been wanting to look at combined climate / energy implications of
widespread deployment of OTEC facil
Hi All
A problem with pumping cold water up to the surface is that it will sink
quite fast.
Kaye and Laby give the density of 3.5% salinity water at 5 C as 1027.68
and at 25 C as 1023.34 kg/m3
We can work out the drag on various shapes of object and find the
velocity which gives a drag for
A new PNAS article on ways to mitigate catastrophic climate scenario. They
try to gauge probabilities for catastrophic/extreme and “unknown/extreme
scenarios. They include carbon extraction and sequestration (but I think
they mean ambient CDR rather than carbon extraction from fossil fuel power
pl
Re cold water pumped up then sinking:
Might this help solve the problem of sinking organic carbon before it
decomposes?
William H. Calvin
wcal...@uw.edu
From: geoengineering@googlegroups.com on
behalf of Stephen Salter
Sent: Friday, September 15, 2017 9:18:30 A
This prompts several comments, and apologies for the delay and to those for
whom this is too basic:
1. The ocean can be thought of as two relatively independent bodies of
water, the shallow and deep ocean. There is a fairly sharp boundary between
the two, called the thermocline. Transfer between
Thanks Peter. However, you don't address whether pumping water into sealed
tubes or greenhouses would be viable.
Deep water isn't that deep - water for my toilet is pumped much further.
As long as the water lifted was kept away from the atmosphere and surface
ocean, it should be effective at fert
I agree with all of that. The shallow ocean has neither the storage capacity
nor the residence time to be a good site for storing CO2. While ocean
currents may not make it possible to push CO2 down into the deep ocean, you
have technical options. For example, you literally could pump liquid CO
Couple of points:1) It is possible to move ocean heat to the deep ocean without
moving water, nutrients or salt, and to do this in the context of OTEC with
higher efficiency and less environmental impact than vertically pumping massive
quantities of water: https://patents.google.com/patent/US857
I’m having a problem replying to Greg Rau’s e mail, so I’m trying to do
this via a response to Klaus’ e mail.
One concern about using the deep ocean as a heat sink is the increased
volume / reduced density as temperature rises, causing sea level rise. I
have done no calculations, so I have no id
Andrew,
I’m not sure I understand your comment that deep water isn’t that deep.
Typical numbers for the shallow ocean are a depth of 200 meter, with a
thermocline between 200 and 1000 meters and a very consistent temperature
and salinity below 1000 meters. See, for example:
https://oceanservi
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