Articles | Volume 20, issue 21
https://doi.org/10.5194/acp-20-12391-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-20-12391-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
30 Oct 2020
Research article |
| 30 Oct 2020
| 30 Oct 2020
Gravitational separation of Ar∕N2 and age of air in the lowermost stratosphere in airborne observations and a chemical transport model
Scripps Institution of Oceanography, UC San Diego, La Jolla, CA 92093, USA
Martyn P. Chipperfield
School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, UK
National Centre for Earth Observation, University of Leeds, Leeds,
LS2 9JT, UK
Eric J. Morgan
Scripps Institution of Oceanography, UC San Diego, La Jolla, CA 92093, USA
Britton B. Stephens
National Center for Atmospheric Research, Boulder, CO 80301, USA
Marianna Linz
Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
Wuhu Feng
School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, UK
National Centre for Atmospheric Science, University of Leeds, Leeds, LS2 9JT, UK
Chris Wilson
School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, UK
National Centre for Earth Observation, University of Leeds, Leeds,
LS2 9JT, UK
Jonathan D. Bent
Scripps Institution of Oceanography, UC San Diego, La Jolla, CA 92093, USA
now at: Picarro, Inc., Santa Clara, CA 95054, USA
Steven C. Wofsy
Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
Jeffrey Severinghaus
Scripps Institution of Oceanography, UC San Diego, La Jolla, CA 92093, USA
Ralph F. Keeling
Scripps Institution of Oceanography, UC San Diego, La Jolla, CA 92093, USA
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Cited
9 citations as recorded by crossref.
- Short-term variability of atmospheric helium revealed through a cryo-enrichment method B. Birner et al. 10.5194/amt-16-1551-2023
- Stratospheric Adiabatic Mixing Rates Derived From the Vertical Gradient of Age of Air M. Linz et al. 10.1029/2021JD035199
- Spatiotemporal variations of the δ(O2 ∕ N2), CO2 and δ(APO) in the troposphere over the western North Pacific S. Ishidoya et al. 10.5194/acp-22-6953-2022
- Increasing atmospheric helium due to fossil fuel exploitation B. Birner et al. 10.1038/s41561-022-00932-3
- Age spectra and other transport diagnostics in the North American monsoon UTLS from SEAC<sup>4</sup>RS in situ trace gas measurements E. Ray et al. 10.5194/acp-22-6539-2022
- Secular change in atmospheric Ar∕N<sub>2</sub> and its implications for ocean heat uptake and Brewer–Dobson circulation S. Ishidoya et al. 10.5194/acp-21-1357-2021
- A method for resolving changes in atmospheric He ∕ N2 as an indicator of fossil fuel extraction and stratospheric circulation B. Birner et al. 10.5194/amt-14-2515-2021
- Age of air from in situ trace gas measurements: insights from a new technique E. Ray et al. 10.5194/acp-24-12425-2024
- Airborne measurements of oxygen concentration from the surface to the lower stratosphere and pole to pole B. Stephens et al. 10.5194/amt-14-2543-2021
9 citations as recorded by crossref.
- Short-term variability of atmospheric helium revealed through a cryo-enrichment method B. Birner et al. 10.5194/amt-16-1551-2023
- Stratospheric Adiabatic Mixing Rates Derived From the Vertical Gradient of Age of Air M. Linz et al. 10.1029/2021JD035199
- Spatiotemporal variations of the δ(O2 ∕ N2), CO2 and δ(APO) in the troposphere over the western North Pacific S. Ishidoya et al. 10.5194/acp-22-6953-2022
- Increasing atmospheric helium due to fossil fuel exploitation B. Birner et al. 10.1038/s41561-022-00932-3
- Age spectra and other transport diagnostics in the North American monsoon UTLS from SEAC<sup>4</sup>RS in situ trace gas measurements E. Ray et al. 10.5194/acp-22-6539-2022
- Secular change in atmospheric Ar∕N<sub>2</sub> and its implications for ocean heat uptake and Brewer–Dobson circulation S. Ishidoya et al. 10.5194/acp-21-1357-2021
- A method for resolving changes in atmospheric He ∕ N2 as an indicator of fossil fuel extraction and stratospheric circulation B. Birner et al. 10.5194/amt-14-2515-2021
- Age of air from in situ trace gas measurements: insights from a new technique E. Ray et al. 10.5194/acp-24-12425-2024
- Airborne measurements of oxygen concentration from the surface to the lower stratosphere and pole to pole B. Stephens et al. 10.5194/amt-14-2543-2021
Latest update: 23 Nov 2024
Short summary
With new high-precision observations from nine aircraft campaigns and 3-D chemical transport modeling, we show that the argon-to-nitrogen ratio (Ar / N2) in the lowermost stratosphere provides a useful constraint on the “age of air” (the time elapsed since entry of an air parcel into the stratosphere). Therefore, Ar / N2 in combination with traditional age-of-air indicators, such as CO2 and N2O, could provide new insights into atmospheric mixing and transport.
With new high-precision observations from nine aircraft campaigns and 3-D chemical transport...
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