Articles | Volume 18, issue 8
Atmos. Chem. Phys., 18, 5691–5697, 2018
https://doi.org/10.5194/acp-18-5691-2018

Special issue: Quadrennial Ozone Symposium 2016 – Status and trends...

Atmos. Chem. Phys., 18, 5691–5697, 2018
https://doi.org/10.5194/acp-18-5691-2018

Research article 24 Apr 2018

Research article | 24 Apr 2018

Using satellite measurements of N2O to remove dynamical variability from HCl measurements

Richard S. Stolarski et al.

Data sets

MLS/Aura Level 2 Hydrogen Chloride (HCl) Mixing Ratio V004 L. Froidevaux, N. Livesey, and W. Read https://doi.org/10.5067/Aura/MLS/DATA2010

MLS/Aura Level 2 Nitrous Oxide (N2O) Mixing Ratio V004 A. Lambert, N. Livesey, and W. Read https://doi.org/10.5067/AURA/MLS/DATA2016

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Short summary
Detecting trends in short data sets of stratospheric molecules is difficult because of variability due to dynamical fluctuations. We suggest that one way around this difficulty is using the measurements of one molecule to remove dynamical variability from the measurements of another molecule. We illustrate this using Aura MLS measurements of N2O to help us sort out issues in the determination of trends in HCl. This shows that HCl is decreasing throughout the middle stratosphere as expected.
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