English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

On the contribution of chemical oscillations to ozone depletion events in the polar spring

MPS-Authors
/persons/resource/persons101269

Sihler,  Holger
Satellite Remote Sensing, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons206894

Platt,  Ulrich
Satellite Remote Sensing, Max Planck Institute for Chemistry, Max Planck Society;

External Resource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Herrmann, M., Cao, L., Sihler, H., Platt, U., & Gutheil, E. (2019). On the contribution of chemical oscillations to ozone depletion events in the polar spring. Atmospheric Chemistry and Physics, 19(15), 10161-10190. doi:10.5194/acp-19-10161-2019.


Cite as: http://hdl.handle.net/21.11116/0000-0004-CB0A-D
Abstract
This paper presents a numerical study of the oscillations (or recurrences) of tropospheric ozone depletion events (ODEs) using the further-developed one-dimensional KInetic aNALysis of reaction mechanics with Transport (KINAL-T) chemistry transport model. Reactive bromine is the major contributor to the occurrence of ODEs. After the termination of an ODE, the reactive bromine in the air is deposited onto aerosols or on the snow surface, and the ozone may regenerate via NOx-catalyzed photochemistry or by turbulent transport from the free troposphere into the boundary layer. The replenished ozone then is available for the next cycle of autocatalytic bromine release (bromine explosion) leading to another ODE. The oscillation periods are found to be as short as 5 d for the purely chemically NOx-driven oscillation and 30 d for a diffusion-driven oscillation. An important requirement for oscillation of ODEs to occur is found to be a sufficiently strong inversion layer. In a parameter study, the dependence of the oscillation period on the nitrogen oxides' concentration, the inversion layer strength, the ambient temperature, the aerosol density, and the solar radiation is investigated. Parameters controlling the oscillation of ODEs are discussed.