Session 4C Upper Tropospheric and Stratospheric Processes (Chemical, Radiative and Dynamical) IV

Monday, 13 January 2025: 4:30 PM-6:00 PM
226 (New Orleans Ernest N. Morial Convention Center)
Host: 27th Conference on Atmospheric Chemistry
Cochairs:
Karen H. Rosenlof; Qing Liang, National Center for Atmospheric Research, Boulder, CO; Christopher Maloney and Thomas F. Hanisco, GSFC, Atmospheric Chemistry and Dynamics Laboratory, Greenbelt, MD

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:
4:30 PM
4C.1
Transport Pathways and Pollution Sources into the extratropical UTLS during PHILEAS (Invited Presentation)
Peter M Hoor, Johannes Gutenberg University, Mainz, RP, Germany; Johannes Gutenberg University Mainz, Germany, Mainz, Rhineland-Palatinate, Germany; and M. Riese, C. Rolf, D. Kunkel, B. Vogel, F. Ploeger, J. Clemens, G. Guenther, S. Borrmann, F. Ekinci, A. Engel, F. Friedl-Vallon, J. U. Grooss, M. Höpfner, M. Jesswein, S. Johansson, F. Köllner, V. Lauther, R. Müller, L. ort, M. Pöhlker, J. Schneider, M. Rapp, B. M. Sinnhuber, L. Smoydzin, L. Tomsche, M. von Hobe, J. Ungermann, C. Voigt, M. Volk, F. Weyland, A. Zahn, and H. Ziereis

4:45 PM
4C.2
Evaluating Simulated Convective Hydration Processes in the Midlatitude Stratosphere Against Airborne Observations
Cameron R. Homeyer, Univ. of Oklahoma, Norman, OK

5:00 PM
4C.3
How Does the Varying Depth of Overshooting Tops Affect the Transport of Water to the Stratosphere?
Devin P. Bissell, Texas A&M Univ., College Station, TX; and C. J. Nowotarski, K. Bowman, and A. D. Rapp

5:15 PM
4C.4
Transport and Evolution of the Hunga Tonga Volcanic Aerosol Plume in the Stratosphere Simulated With the GEOS-Chem Model
Hongyu Liu, National Institute of Aerospace, Hampton, VA; NASA Langley Research Center, Hampton, VA; and J. P. Vernier, A. Pandit, S. Eastham, G. Luo, H. Choi, B. Zhang, H. Vernier, G. Souza, and R. Das

5:30 PM
4C.5
Long-term Changes in the Thermodynamic Structure and the Mass of the Lowermost Stratosphere
Franziska Weyland, Johannes Gutenberg University Mainz, Mainz, Germany; and P. M. Hoor, D. Kunkel, T. Birner, F. Ploeger, and K. Turhal

5:45 PM
4C.6
Evaluating the Impacts of Storm-Scale and Environmental Factors on Stratosphere-Troposphere Exchange Associated with Deep Mid Latitude Convection
Cole Mason Shepherd, University of Oklahoma, Norman, OK; and C. R. Homeyer

Recorded Presentation
- Indicates paper has been withdrawn from meeting
- Indicates an Award Winner
See more of: 27th Conference on Atmospheric Chemistry
<< Previous Topic | Next Topic >>