Articles | Volume 26, issue 21
https://doi.org/10.5194/acp-26-15763-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-15763-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Nov 2026
Research article |
| 10 Nov 2026
| 10 Nov 2026
The boundary of nighttime ozone chemical equilibrium as an indicator of local chemistry disturbances in the polar mesopause region
Mikhail Yu. Kulikov
CORRESPONDING AUTHOR
A. V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov Str., 603950 Nizhny Novgorod, Russia
Mikhail V. Belikovich
A. V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov Str., 603950 Nizhny Novgorod, Russia
Aleksey G. Chubarov
A. V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov Str., 603950 Nizhny Novgorod, Russia
Svetlana O. Dementyeva
A. V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov Str., 603950 Nizhny Novgorod, Russia
Alexander M. Feigin
A. V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov Str., 603950 Nizhny Novgorod, Russia
Related authors
Mikhail Yu. Kulikov, Mikhail V. Belikovich, Aleksey G. Chubarov, Svetlana O. Dementyeva, and Alexander M. Feigin
Atmos. Chem. Phys., 24, 10965–10983, https://doi.org/10.5194/acp-24-10965-2024, https://doi.org/10.5194/acp-24-10965-2024, 2024
Short summary
Short summary
The assumption of chemical equilibrium is widely used to derive information about poorly measured characteristics of the mesosphere–lower thermosphere from rocket and satellite data and to study the physicochemical processes at these altitudes. In this work, we analyze the fundamental aspects of chemical equilibria of two important trace gases and discuss their possible applications.
Mikhail Yu. Kulikov, Mikhail V. Belikovich, Aleksey G. Chubarov, Svetlana O. Dementyeva, and Alexander M. Feigin
Atmos. Chem. Phys., 23, 14593–14608, https://doi.org/10.5194/acp-23-14593-2023, https://doi.org/10.5194/acp-23-14593-2023, 2023
Short summary
Short summary
In this work, the recently developed analytical criterion for determining the boundary of nighttime ozone chemical equilibrium (NOCE) in the mesopause region (80–90 km) is used (i) to study the connection of this boundary with O and H spatiotemporal variability based on 3D modeling of chemical transport and (ii) to retrieve and analyze the spatiotemporal evolution of the NOCE boundary in 2002–2021 from the SABER/TIMED data set.
Mikhail Yu. Kulikov, Mikhail V. Belikovich, Aleksey G. Chubarov, Svetlana O. Dementyeva, and Alexander M. Feigin
Atmos. Chem. Phys., 24, 10965–10983, https://doi.org/10.5194/acp-24-10965-2024, https://doi.org/10.5194/acp-24-10965-2024, 2024
Short summary
Short summary
The assumption of chemical equilibrium is widely used to derive information about poorly measured characteristics of the mesosphere–lower thermosphere from rocket and satellite data and to study the physicochemical processes at these altitudes. In this work, we analyze the fundamental aspects of chemical equilibria of two important trace gases and discuss their possible applications.
Mikhail Yu. Kulikov, Mikhail V. Belikovich, Aleksey G. Chubarov, Svetlana O. Dementyeva, and Alexander M. Feigin
Atmos. Chem. Phys., 23, 14593–14608, https://doi.org/10.5194/acp-23-14593-2023, https://doi.org/10.5194/acp-23-14593-2023, 2023
Short summary
Short summary
In this work, the recently developed analytical criterion for determining the boundary of nighttime ozone chemical equilibrium (NOCE) in the mesopause region (80–90 km) is used (i) to study the connection of this boundary with O and H spatiotemporal variability based on 3D modeling of chemical transport and (ii) to retrieve and analyze the spatiotemporal evolution of the NOCE boundary in 2002–2021 from the SABER/TIMED data set.
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Short summary
This study has two primary objectives. First, we use model simulations to investigate the connection between the nighttime ozone chemical equilibrium boundary and mesopause chemistry variability, particularly under polar night conditions. Second, we analyze the evolution of this boundary using combined satellite and reanalysis data for the winter–spring seasons of 2002–2025, with a specific focus on the periods preceding, during, and following sudden stratopause warmings.
This study has two primary objectives. First, we use model simulations to investigate the...
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