Preprints
https://doi.org/10.5194/egusphere-2023-1046
https://doi.org/10.5194/egusphere-2023-1046
05 Jun 2023
 | 05 Jun 2023

Boundary of nighttime ozone chemical equilibrium in the mesopause region: long-term evolution from 20-year satellite observations

Mikhail Yu. Kulikov, Mikhail V. Belikovich, Aleksey G. Chubarov, Svetlana O. Dementyeva, and Alexander M. Feigin

Abstract. The assumption of nighttime ozone chemical equilibrium (NOCE) is widely used for retrieval of the Оx-НOx components in the mesopause from rocket and satellite measurements. In this work, recently developed analytical criterion of determining the NOCE boundary is applied (1) to study of connection of this boundary with O and H spatiotemporal variability basing on the 3D chemical transport modeling, and (2) to retrieve and analyze the spatiotemporal evolution of the NOCE boundary in 2002–2021 from SABER/TIMED data set. It was revealed, first, that the NOCE boundary well reproduces the transition zone dividing deep and weak diurnal oscillations of O and H at the low and middle latitudes. Second, the NOCE boundary is sensitive to sporadic abrupt changes in the middle atmosphere dynamics, in particular, due to powerful sudden stratospheric warmings leading to events of elevated (up to ~80 km) stratopause, which took place in January–February 2004, 2006, 2009, 2010, 2012, 2013, 2018 and 2019. Third, the space-time evolution of this characteristics expressed via pressure-height contains a clear signal of 11-year solar cycle in the range of 55º S–55º N. In particular, average annual the NOCE boundary averaged in this range of latitudes anticorrelates well with F10.7 index with the coefficient of -0.96. Moreover, it shows a weak linear trend of 49.2±36.2 m/decade.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Share

Journal article(s) based on this preprint

27 Nov 2023
Boundary of nighttime ozone chemical equilibrium in the mesopause region: long-term evolution determined using 20-year satellite observations
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
Download

The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
In this work, recently developed analytical criterion of determining the nighttime ozone...
Share