Richard J. Saykally, Department of Chemistry, University of California, Berkeley, CA 94720, USA Published February 25, 2013 | Physics 6, 22 (2013) | DOI: 10.1103/Physics.6.22
Water dimers have been detected in room-temperature water vapor, a key step toward understanding their effect on solar absorption and chemistry in the atmosphere. Water Dimer Rotationally Resolved Millimeter-Wave Spectrum Observation at Room Temperature
M. Yu. Tretyakov, E. A. Serov, M. A. Koshelev, V. V. Parshin, and A. F. Krupnov Phys. Rev. Lett. 110, 093001 (2013) Published February 25, 2013 | PDF (free) High-resolution spectroscopy is allowing scientists to detect the presence of water dimers—the simplest cluster of water molecules (inset)—in a sample of water vapor. The pink line is the measured spectrum and the white line is the calculated dimer spectrum. (The monomer contribution—indicated by the yellow trace—has been subtracted.) The vertical bars show the positions of the dimer rotational lines. The spectrum was measured in water vapor in equilibrium at 23 °C and 0.022 atm.
Water is the third most abundant molecule in the atmosphere and the principal absorber of both incoming sunlight and reradiated blackbody radiation. Yet models of atmospheric absorption that only take into account the water molecule’s well-known rotational and vibration-rotational transitions don’t match up with measurements of the atmosphere’s absorption spectrum [1]....
Thanks for the last link about water dimer in gas phase. Eli and I would both get a lot out of this paper, it is a really quite amazing spectroscopic achievement. As far as climate deniers using this, I think it is much too obscure, and a pretender can get exposed pretty quick.
Eli Rabett, a not quite failed professorial techno-bunny who finally handed in the keys and retired from his wanna be research university. The students continue to be naive but great people and the administrators continue to vary day-to-day between homicidal and delusional without Eli's help. Eli notices from recent political developments that this behavior is not limited to administrators. His colleagues retain their curious inability to see the holes that they dig for themselves. Prof. Rabett is thankful that they, or at least some of them occasionally heeded his pointing out the implications of the various enthusiasms that rattle around the department and school. Ms. Rabett is thankful that Prof. Rabett occasionally heeds her pointing out that he is nuts.
3 comments:
Something like this?
http://youtubedoubler.com/8Dvg
http://physics.aps.org/articles/v6/22
Richard J. Saykally, Department of Chemistry, University of California, Berkeley, CA 94720, USA
Published February 25, 2013 | Physics 6, 22 (2013) | DOI: 10.1103/Physics.6.22
Water dimers have been detected in room-temperature water vapor, a key step toward understanding their effect on solar absorption and chemistry in the atmosphere.
Water Dimer Rotationally Resolved Millimeter-Wave Spectrum Observation at Room Temperature
M. Yu. Tretyakov, E. A. Serov, M. A. Koshelev, V. V. Parshin, and A. F. Krupnov
Phys. Rev. Lett. 110, 093001 (2013)
Published February 25, 2013 | PDF (free)
High-resolution spectroscopy is allowing scientists to detect the presence of water dimers—the simplest cluster of water molecules (inset)—in a sample of water vapor. The pink line is the measured spectrum and the white line is the calculated dimer spectrum. (The monomer contribution—indicated by the yellow trace—has been subtracted.) The vertical bars show the positions of the dimer rotational lines. The spectrum was measured in water vapor in equilibrium at 23 °C and 0.022 atm.
Water is the third most abundant molecule in the atmosphere and the principal absorber of both incoming sunlight and reradiated blackbody radiation. Yet models of atmospheric absorption that only take into account the water molecule’s well-known rotational and vibration-rotational transitions don’t match up with measurements of the atmosphere’s absorption spectrum [1]....
baDUM-Crash....
Hank,
Thanks for the last link about water dimer in gas phase. Eli and I would both get a lot out of this paper, it is a really quite amazing spectroscopic achievement. As far as climate deniers using this, I think it is much too obscure, and a pretender can get exposed pretty quick.
Rib Smokin' Bunny
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