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Mayer, Bernhard and Emde, Claudia (2007) Comment on “Glory phenomenon informs of presence and phase state of liquid water in cold clouds” by Anatoly N. Nevzorov. Atmospheric Research, 84, pp. 410-419. Elsevier. doi: 10.1016/j.atmosres.2007.01.005.
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Official URL: http://www.elsevier.com/wps/find/journaldescription.cws_home/503323/description#description
Abstract
In a recent publication “Glory phenomenon informs of presence and phase state of liquid water in cold clouds” Nevzorov [Nevzorov, A., 2006. Glory phenomenon informs of presence and phase state of liquid water in cold clouds. Atmospheric Research 82, 367–378] claims that “the convincing evidence has been provided that this sort of glory forms as a first-order bow from spherical particles with a refractive index of 1.81–1.82 and diameter over 20 μm”. This is a highly unusual finding because the refractive index of liquid water and ice is between 1.30 and 1.35 in the visible spectral range. The author concludes that “once more corroboration is gained […] of droplets of liquid water in specific phase state referred to amorphous water, or A-water”. Here we show that the phenomena described by the author are easily explained assuming liquid water with a refractive index of 1.33 and a realistic droplet size distribution with an effective radius of around 10 μm. We conclude that this type of observations does not corroborate the existence of amorphous water in the atmosphere. In a recent publication we showed how to quantitatively derive cloud optical thickness, effective droplet radius, and even the width of the size distribution from observations of the glory [Mayer, B., Schröder, M., Preusker, R., Schüller, L., 2004. Remote sensing of water cloud droplet size distributions using the backscatter glory: a case study. Atmospheric Chemistry and Physics 4, 1255–1263].
| Item URL in elib: | https://elib.dlr.de/48660/ | |||||||||
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| Document Type: | Article | |||||||||
| Title: | Comment on “Glory phenomenon informs of presence and phase state of liquid water in cold clouds” by Anatoly N. Nevzorov | |||||||||
| Authors: |
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| Date: | 2007 | |||||||||
| Journal or Publication Title: | Atmospheric Research | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | Yes | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | Yes | |||||||||
| In ISI Web of Science: | Yes | |||||||||
| Volume: | 84 | |||||||||
| DOI: | 10.1016/j.atmosres.2007.01.005 | |||||||||
| Page Range: | pp. 410-419 | |||||||||
| Publisher: | Elsevier | |||||||||
| Status: | Published | |||||||||
| Keywords: | cloud, radiation, scattering, radiative transfer, remote sensing, microphysics | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | |||||||||
| HGF - Program: | Space (old) | |||||||||
| HGF - Program Themes: | W EO - Erdbeobachtung | |||||||||
| DLR - Research area: | Space | |||||||||
| DLR - Program: | W EO - Erdbeobachtung | |||||||||
| DLR - Research theme (Project): | W - Vorhaben Atmosphären- und Klimaforschung (old) | |||||||||
| Location: | Oberpfaffenhofen | |||||||||
| Institutes and Institutions: | Institute of Atmospheric Physics > Atmospheric Remote Sensing | |||||||||
| Deposited By: | Mayer, Dr.rer.nat. Bernhard | |||||||||
| Deposited On: | 19 Jun 2007 | |||||||||
| Last Modified: | 31 Jul 2019 19:19 |
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