Session 1A Upper Tropospheric and Stratospheric Processes (Chemical, Radiative and Dynamical)

Monday, 29 January 2024: 8:30 AM-10:00 AM
310 (The Baltimore Convention Center)
Host: 26th Conference on Atmospheric Chemistry
Submitters:
Karen H. Rosenlof; Qing Liang, National Center for Atmospheric Research, Boulder, CO; Thomas F. Hanisco, GSFC, Atmospheric Chemistry and Dynamics Laboratory, Greenbelt, MD and Sean M. Davis, PhD, NOAA Chemical Sciences Laboratory, Boulder Office, Boulder, CO

This session invites studies addressing upper tropospheric and stratospheric composition and interactions with chemistry, dynamics and climate. Of particular interest are studies examining stratospheric ozone changes associated with controls imposed by the Montreal Protocol, those examining upper troposphere/lower stratosphere composition using measurements from recent field campaigns, and studies on chemical and dynamical perturbations on the upper troposphere and stratosphere due to episodic events such as large pyro-cumulonimbus events and volcanic eruptions that reach the stratosphere as well as perturbations caused by the space launch industry.  Reports on recent stratospheric aircraft campaigns addressing upper troposphere and stratosphere processes are welcome. Additional topics that would be applicable for this session are: 1) trends and variability in stratospheric composition; 2) the effects of increasing greenhouse gases on ozone recovery; 3) the relation between stratospheric composition and surface climate; 4) stratospheric aerosol-ozone-climate interactions associated with geo-engineering schemes. Observational and modeling studies ranging from local to global spatial scales and seasonal to centennial time scales are welcome.

Papers:
8:30 AM
1A.1
Metals from the Reentry of Spacecraft in Stratospheric Particles (Invited Presentation)
Daniel Murphy, NOAA, Boulder, CO; and M. Abou-Ghanem, D. Cziczo, K. Froyd, J. Jacquot, M. Lawler, C. Maloney, M. Ross, J. Plane, G. P. Schill, and X. Shen

8:45 AM
1A.2
The Future Chemistry and Climate Impacts of Large, Fully-Reusable Methane-Fueled Rockets
Kostas Tsigaridis, Columbia Univ., New York, NY; and R. Field, S. Bauer, M. Ross, C. Maloney, G. A. Schmidt, and K. H. Rosenlof

Handout (4.8 MB)

9:00 AM
1A.3
Radiative Impacts and Stratospheric Loading from Increased Aerosol Emissions Due to an Increase in Satellite Re-entry Frequency.
Christopher Maloney, CIRES, Boulder, CO; NOAA, Boulder, CO; and R. Portmann, M. Ross, K. H. Rosenlof, and C. G. Bardeen

9:15 AM
1A.4
Understanding Upper Tropospheric / Lower Stratospheric Aerosols in a Changing Climate: From Meteoritic Material to Biomass Burning
Daniel Cziczo, Purdue, West Layfayette, IN; and M. Abou-Ghanem, J. A. Dykema, K. Froyd, J. Jacquot, F. Keutsch, M. Lawler, Y. Li, G. P. Schill, X. Shen, and D. Murphy

9:30 AM
1A.5
Radiative Forcing From the 2014–2022 Volcanic and Wildfire Injections
Pengfei Yu, Jinan University, Guangzhou, Guangdong, China

9:45 AM
1A.6
Combining Earth System Modeling and Machine Learning to Investigate Volcanic Sulfate Deposition in Polar Ice Cores
Malcolm Maas, University of Maryland, College Park, MD; LDEO, Palisades, NY; and K. Tsigaridis and M. van Lier-Walqui

Recorded Presentation
- Indicates paper has been withdrawn from meeting
- Indicates an Award Winner
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