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Remote sensing ice supersaturation inside and near cirrus clouds: a case study in the subtropics.

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Title: Remote sensing ice supersaturation inside and near cirrus clouds: a case study in the subtropics.
Authors: Hoareau, C.1, Noel, V.2 vincent.noel@aero.obs‐mip.fr, Chepfer, H.3, Vidot, J.4, Chiriaco, M.5, Bastin, S.5, Reverdy, M.6, Cesana, G.7
Source: Atmospheric Science Letters (John Wiley & Sons, Inc. ). Dec2016, Vol. 17 Issue 12, p639-645. 7p.
Subject Terms: *Humidity, *Geophysics, Supersaturation, Cirrus clouds, Cloud dynamics, Tropospheric thermodynamics, Mathematical models
Abstract: Combining vertically resolved lidar retrievals of water vapor and cloud detection, we document a 2-day subtropical cirrus case study over La Réunion (20.9°S-55.5°E) in March 2005, focusing on the conditions of ice supersaturation inside and near the observed cloud. Using satellite observations, we describe the synoptic conditions leading to cloud formation. Supersaturation occurs 25% of the time within the cirrus, up to 35% in its middle segment, where relative humidity goes beyond 150%. In clear-sky areas, relative humidity stays consistently low, especially in profiles without clouds. High-troposphere atmospheric waves could initiate the formation of supersaturation conditions, especially on 16 March. [ABSTRACT FROM AUTHOR]
Copyright of Atmospheric Science Letters (John Wiley & Sons, Inc. ) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Remote sensing ice supersaturation inside and near cirrus clouds: a case study in the subtropics.
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  Data: <searchLink fieldCode="JN" term="%22Atmospheric+Science+Letters+%28John+Wiley+%26+Sons%2C+Inc%2E+%29%22">Atmospheric Science Letters (John Wiley & Sons, Inc. )</searchLink>. Dec2016, Vol. 17 Issue 12, p639-645. 7p.
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  Data: *<searchLink fieldCode="DE" term="%22Humidity%22">Humidity</searchLink><br />*<searchLink fieldCode="DE" term="%22Geophysics%22">Geophysics</searchLink><br /><searchLink fieldCode="DE" term="%22Supersaturation%22">Supersaturation</searchLink><br /><searchLink fieldCode="DE" term="%22Cirrus+clouds%22">Cirrus clouds</searchLink><br /><searchLink fieldCode="DE" term="%22Cloud+dynamics%22">Cloud dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Tropospheric+thermodynamics%22">Tropospheric thermodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink>
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  Data: Combining vertically resolved lidar retrievals of water vapor and cloud detection, we document a 2-day subtropical cirrus case study over La Réunion (20.9°S-55.5°E) in March 2005, focusing on the conditions of ice supersaturation inside and near the observed cloud. Using satellite observations, we describe the synoptic conditions leading to cloud formation. Supersaturation occurs 25% of the time within the cirrus, up to 35% in its middle segment, where relative humidity goes beyond 150%. In clear-sky areas, relative humidity stays consistently low, especially in profiles without clouds. High-troposphere atmospheric waves could initiate the formation of supersaturation conditions, especially on 16 March. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Atmospheric Science Letters (John Wiley & Sons, Inc. ) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/asl.714
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      – SubjectFull: Humidity
        Type: general
      – SubjectFull: Geophysics
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      – SubjectFull: Supersaturation
        Type: general
      – SubjectFull: Cirrus clouds
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      – SubjectFull: Cloud dynamics
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      – SubjectFull: Tropospheric thermodynamics
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      – SubjectFull: Mathematical models
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      – TitleFull: Remote sensing ice supersaturation inside and near cirrus clouds: a case study in the subtropics.
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              Text: Dec2016
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