Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 35, issue 2
Articles | Volume 35, issue 2
https://doi.org/10.5194/angeo-35-295-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-35-295-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 35, issue 2
Regular paper
 | 
28 Feb 2017
Regular paper |  | 28 Feb 2017

Double-layer structure in polar mesospheric clouds observed from SOFIE/AIM

Haiyang Gao, Gordon G. Shepherd, Yuanhe Tang, Lingbing Bu, and Zhen Wang

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Short summary
We find double-layer structure events with percentages of 10.32 and 7.25 % compared to total PMCs events, and the mean distances between two peaks are 3.06 and 2.73 km for the NH and SH respectively using SOFIE data from 2007 to 2014. By analysis of the background temperature and water vapour residual profiles, we conclude that the lower layer is a reproduced one formed at the bottom of the upper layer. These structures have close relationships with temperature enhancements and GWs.
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