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I don't know if you remember suricat, but I was looking into UV effects on water (both frozen & liquid) on C4s boards with out a great deal of success.
Ah yes, Ah reemembeur eet well.
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I even had an email exchange with Dr Paul Crutzen which came to nothing.
Yes, and again, I'm sorry if you had a bad time over this.
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Have you had better luck?
Prefer chance, or hapstance, to luck.
Because UV is high energy it has a tendency to alter chemistry during its absorption, thus UV was dubbed "chemical rays" during the 19th century, so much of the research into its increased inclusion within insolation (mainly because of the O3 hole) has been levelled at health issues and not GW issues.
There seem to be few papers that deal with GW by UV from what I can find online. However, the science seems sound enough to me. Water doesn't absorb much UV insolation:
http://www.lsbu.ac.uk/water/vibrat.html#uv
Stands to reason that if it's unimpeded by waterborne particulates (blue line), it'll get to about 700m of ocean depth (depth to extinction).
During this ocean penetration the energy must transit to some place, or other, and is probably "subdued" by means of a harmonic interaction (½, or ¼ wave depletion [reference radio aerial technology, it confirms both macro and micro admittance for EM absorption]). An "incomplete interaction" of this type wouldn't impart the total (chemical altering) energy of UV, just some of its value. Thus, longer wavelengths can gain from an incomplete interaction with a shorter wavelength (and vice versa, but not investigated in the case under discussion). Perhaps this is what "some people" call absorption "wings", or a "pressure broadening" type observation!
As it happens, the "deep ocean temperature" lower boundary is 750m. Is this to include the possible factor of UV insolation? It's just unfortunate that it hasn't been logged accurately yet (ces't la vie).
I still put my reputation on everything that I've posted here and on the old C4 site (that's one reason why I keep copies of all my posts, I'm just a "sincere engineer" in the "help and learn" loop).
Best regards, suricat.