Simulating age of air and the distribution of SF<sub>6</sub> in the stratosphere with the SILAM model

Kouznetsov, Rostislav; Sofiev, Mikhail; Vira, Julius; Stiller, Gabriele

doi:https://doi.org/10.5194/acp-20-5837-2020

Articles | Volume 20, issue 9

https://doi.org/10.5194/acp-20-5837-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-5837-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 9

Research article

|

15 May 2020

Research article |

| 15 May 2020

Simulating age of air and the distribution of SF₆ in the stratosphere with the SILAM model

Rostislav Kouznetsov, Mikhail Sofiev, Julius Vira, and Gabriele Stiller

Data sets

The ERA-Interim reanalysis: configuration and performance of the data assimilation system (https://www.ecmwf.int/en/forecasts/datasets/browse-reanalysis-datasets) D. P. Dee et al. https://doi.org/10.1002/qj.828

Short summary

Estimates of the age of stratospheric air (AoA), its distribution, and trends, obtained by different experimental methods, differ among each other. AoA derived form MIPAS satellite observations, the richest observational dataset on sulfur hexafluoride (SF₆) in the stratosphere, are a clear outlier. With multi-decade simulations of AoA and SF₆ in the stratosphere, we show that the origin of the discrepancy is in a methodology of deriving AoA from observations rather than in observational data.

Simulating age of air and the distribution of SF6 in the stratosphere with the SILAM model

Data sets

Simulating age of air and the distribution of SF₆ in the stratosphere with the SILAM model