Bennett In Vermont (@BennettVermont) says:
March 10, 2013 at 8:39 pm
Thank you rogerknights!
I laughed till I cried.
A wonderful compilation. I look forward to seeing more of your collection.
Cheers!
Thanks, and thanks to others in earlier posts who’ve expressed the same sentiment. I’ll post another compilation in the next Open Thread.
mellyrn
March 12, 2013 11:11 am
Exactly how is CO2 supposed to trap more infrared on Earth than it “reflects” away?
CO2 absorbs infrared and reradiates it >>isotropically<>outbound<>incoming<< IR that it actually intercepts) back out into space so it never reaches Earth to warm it.
To cause ANY warming (Watts says it causes "some"), CO2 must either preferentially absorb outbound IR and be transparent to incoming, or preferentially (i.e., non-isotopically) reradiate downward, or both. Which is it, and how, specifically, does that happen?
Exactly how is CO2 supposed to trap more infrared on Earth than it “reflects” away?
The hypothesis is that the extra heat from Co2, causes additional water vapor, multiplying the warming of Co2, the Climate Sensitivity figure.
CO2 absorbs infrared and reradiates it >>isotropicallyoutboundincoming<< IR that it actually intercepts) back out into space so it never reaches Earth to warm it.
To cause ANY warming (Watts says it causes "some"), CO2 must either preferentially absorb outbound IR and be transparent to incoming, or preferentially (i.e., non-isotopically) reradiate downward, or both. Which is it, and how, specifically, does that happen?
The optical window for solar .5u short wave IR is open. Long wave IR from earth is in the 8u-20u which is blocked in some bands by water vapor, methane, ozone and Co2. It is preferentially allowed in, but restricted out going.
Then any ir that is absorbed by a Co2 molecule, will be re-radiated in any direction, some of which will be earthward.
mellyrn
March 12, 2013 4:36 pm
Thank you, MiCro (and congrats on understanding what I meant even though my post got garbled by my attempt at emphasis…)
Could you give me a reference to the specific solar spectrum, and the outbound Earth spectrum? I’m intrigued that the sun shines in 0.5u but not 8-20u, and that Earth doesn’t radiate in 0.5u, but danged if I can find detailed spectra myself — not saying it’s not there, just that I am rather inept with searches.
Thanks in advance.
Could you give me a reference to the specific solar spectrum, and the outbound Earth spectrum? I’m intrigued that the sun shines in 0.5u but not 8-20u, and that Earth doesn’t radiate in 0.5u, but danged if I can find detailed spectra myself — not saying it’s not there, just that I am rather inept with searches.
Thanks, and thanks to others in earlier posts who’ve expressed the same sentiment. I’ll post another compilation in the next Open Thread.
Exactly how is CO2 supposed to trap more infrared on Earth than it “reflects” away?
CO2 absorbs infrared and reradiates it >>isotropically<>outbound<>incoming<< IR that it actually intercepts) back out into space so it never reaches Earth to warm it.
To cause ANY warming (Watts says it causes "some"), CO2 must either preferentially absorb outbound IR and be transparent to incoming, or preferentially (i.e., non-isotopically) reradiate downward, or both. Which is it, and how, specifically, does that happen?
mellyrn says:
March 12, 2013 at 11:11 am
The hypothesis is that the extra heat from Co2, causes additional water vapor, multiplying the warming of Co2, the Climate Sensitivity figure.
The optical window for solar .5u short wave IR is open. Long wave IR from earth is in the 8u-20u which is blocked in some bands by water vapor, methane, ozone and Co2. It is preferentially allowed in, but restricted out going.
Then any ir that is absorbed by a Co2 molecule, will be re-radiated in any direction, some of which will be earthward.
Thank you, MiCro (and congrats on understanding what I meant even though my post got garbled by my attempt at emphasis…)
Could you give me a reference to the specific solar spectrum, and the outbound Earth spectrum? I’m intrigued that the sun shines in 0.5u but not 8-20u, and that Earth doesn’t radiate in 0.5u, but danged if I can find detailed spectra myself — not saying it’s not there, just that I am rather inept with searches.
Thanks in advance.
mellyrn says:
March 12, 2013 at 4:36 pm
The reason is the temp of the Sun vs the Earth.
Pretty
With atm absorption spectrum