Articles | Volume 43, issue 1
https://doi.org/10.5194/angeo-43-201-2025
https://doi.org/10.5194/angeo-43-201-2025
Regular paper
 | 
31 Mar 2025
Regular paper |  | 31 Mar 2025

Effects of supernova-induced soft X-rays on middle- and upper-atmospheric nitric oxide and stratospheric ozone

David E. Siskind, McArthur Jones Jr., and Jeffrey W. Reep

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Cited articles

Arnone, E. and Hauchecorne, A.: Stratospheric NOy species measured by MIPAS and GOMOS Onboard ENVISAT 2002–2010: Influence of plasma processes onto the observed distribution and variability, Space Sci Rev., 168, 315–332, https://doi.org/10.1007/s11214-011-9861-1, 2011. 
Bertaux, J.-L., Hauchecorne, A., Lefèvre, F., Bréon, F.-M., Blanot, L., Jouglet, D., Lafrique, P., and Akaev, P.: The use of the 1.27 µm O2 absorption band for greenhouse gas monitoring from space and application to MicroCarb, Atmos. Meas. Tech., 13, 3329–3374, https://doi.org/10.5194/amt-13-3329-2020, 2020. 
Bradshaw, S. J. and Cargill, P. J.: The Influence of Numerical Resolution on Coronal Density in Hydrodynamic Models of Impulsive Heating, Astrophys. J., 770, 12, https://doi.org/10.1088/0004-637X/770/1/12, 2013. 
Brasseur, G. and Solomon, S.: Aeronomy of the Middle Atmosphere, D. Reidel Publishing Co., ISBN 9781402032844, 2005. 
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This study tests a recent suggestion that multi-month soft X-ray emissions from supernovae can destroy planetary ozone layers. To test this, we assume a year-long solar flare and evaluate the production of nitric oxide in the upper atmosphere and its transport down to the stratosphere. Our results suggest widespread catalytic destruction of ozone; however, these effects are limited to the upper edge of the ozone layer (near 40 km). Thus, the total column is only slightly affected (1–2 %).
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