Changes in the Stratosphere, Mesosphere and Lower Thermosphere Composition and Thermal Structure
A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Meteorology".
Deadline for manuscript submissions: closed (15 September 2018) | Viewed by 10305
Special Issue Editor
Interests: mesosphere and lower themosphere (MLT) thermal; chemical and dynamical structure; MLT variability; long-term trends; non-LTE modeling; IR observations; airglow; atmospheric variable retrievals
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Special Issue Information
Dear Colleagues,
The emission of gases at the surface impacts the atmosphere as a whole, from the ground to the upper thermosphere. There is a deep interest in the determination of the induced changes in the stratosphere, mesosphere and lower thermosphere (SMLT) composition and temperature, and the understanding of coupling processes with other atmospheric regions, feedback mechanisms and interactions with climate. Variations in atmospheric constituents affect the energy budget, modifying temperatures and, ultimately, the extension of the atmosphere. They may also eventually alter the dynamics and phenomena propagating from and to other regions in the atmosphere. Changes of anthropogenic origin are superimposed to the considerable natural variability of this atmospheric region. Above all else, all these are interconnected and interaction between large-scale processes and the regional behavior also play a role.
Over the past decades, spaceborne and groundbased instrumentation have provided a wealth of observations of the SMLT. These have allowed for an unprecedented perception of the variability in the SMLT composition and thermal structure at multiple timescales, the interconnection with lower and upper regions and the influence of the solar cycle. Nonetheless, the portrait of the changes in this region is not univocal. This is in part due to limitations in the observations, which lead to sampling biases and disagreements between instruments.
This Special Issue calls for papers addressing the study of the SMLT temperature and composition and providing insights on variations at any timescale and their evolution from an observational perspective, either from space, from the ground or from a combination of them, and either at a local or a global scale. Discussions on effects from sampling biases and other sources of uncertainties are more than welcome. Contributions may cover any of the following topics:
- SMLT monitoring, climatologies, observational evidence for long-term changes, identification of drivers;
- Characterization of diurnal, seasonal and interannual variability and their evolution;
- Effect of gravity waves, planetary waves and tides and its evolution;
- Influence of the sun on SMLT variability;
- SMLT coupling processes with lower and upper atmospheric regions and their variability;
- Comparisons between instruments, determination of sampling biases and uncertainties, effect on the interpretation of variabilities at any timescale;
- Role of natural variability in secular trends, impact of short and mid-term variations on long-term trend estimates.
Dr. Maya Garcia-Comas
Guest Editor
Manuscript Submission Information
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Keywords
- stratosphere, mesosphere, lower thermosphere observations
- temperature and constituent abundances
- atmospheric waves
- atmospheric variability
- climatologies and trends
- atmospheric coupling
