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Comment: Re: Yawn (Score 1) 367

by haruchai (#43690635) Attached to: Observed Atmospheric CO2 Hits 400 Parts Per Million

It was established a long time ago that CO2 and H2O absorb different IR bands. Since H2O will quickly precipitate out of the atmosphere, raising the overall temp is the only way to keep higher levels in the air for a long time. Higher concentrations of CO2, methane, or other GHGs, assuming no or very little change in insolation, is how the water vapor feedback increases significantly and stays that way.

Comment: Re: Yawn (Score 3, Interesting) 367

by haruchai (#43634729) Attached to: Observed Atmospheric CO2 Hits 400 Parts Per Million

From your linked PDF - "The agreement of the reconstruction of the temperature history using only the six strongest components of the spectrum, with M6, shows that the present climate dynamics is dominated by periodic processes. This does NOT rule out a warming by anthropogenic inuences such as an increase of
atmospheric CO2
(bolding and emphasis mine)

All the records examined in this paper were in a time period where GHG levels were significantly lower than at present and the dominant climate forcings would have been natural ones such as insolation, and volcanic eruptions.

Our use of fossil fuels have complicated the issue by adding significantly large amounts of both warming and cooling agents into the mix. But a net positive heat balance cannot simply be handwaved away into a "periodic oscillation". The heat has to go somewhere and wherever that may be, it will have an impact.
Whether or not the impact is significant and long-term is a longer discussion.

Comment: Re:Twice as big as it needs to be? (Score 1) 332

by haruchai (#43520801) Attached to: 64-bit x86 Computing Reaches 10th Anniversary

Most of those same home users might get by with 512 - 1GB RAM and a 1$10 AGP video card; but with millions having multigigabyte machines with vector processor GPUs, the potential for cheap, powerful distributed processing is enormous - if you can convince them to give up a few hours of CPU time occasionally.

Otherwise, well, it's probably just a waste electricity although PCs have been pretty darned efficient in the last few years.

Comment: 31000 homes? (Score 1) 595

by haruchai (#43448819) Attached to: Is Bitcoin Mining a Real-World Environmental Problem?

That 982 MWh or 41 MW sounds impressive or 31000 homes sounds impressive until you realize that 5 - 7 million homes are built in the US alone every year.
I'm all for finding more efficient ways to do things but we can likely realize much greater benefit from the traditional financial institutions cleaninp up their act than from halting the wasteful mining of bitcoins.

If it'll make you happy, perhaps Bitcoin mining can be done only when power is cheapest.

"The way of the world is to praise dead saints and prosecute live ones." -- Nathaniel Howe

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