Call for Session Abstracts
Boundary Layers in High Latitudes
European Geosciences Union General Assembly 2019
7-12 April 2019
Abstract submission deadline: 10 January 2019, 1:00 p.m. Central European Time
For more information about the meeting, go to:
The European Geosciences Union (EGU) is currently accepting abstract submissions for the EGU General Assembly 2019. This meeting will convene 7-12 April 2019 in Vienna, Austria.
Conveners of the following session invite abstract submissions:
SESSION AS2.3/CR3.10/OS1.14: Boundary Layers in High Latitudes
Conveners: Günther Heinemann, Jo Browse, Julia Schmale, Michael Tjernström, and Gillian Young
Changes in the Arctic and Antarctic climate systems are strongly related to processes in the boundary layer and their feedbacks with the free troposphere. An adequate understanding and quantification of these processes is necessary to improve predictions of future changes in the polar regions and their teleconnections with mid-latitude weather and climate, including meridional transport of heat, moisture, and air pollutants. Processes include atmosphere-ocean-ice (AOI) interactions, such as physical and chemical snow processes (e.g., snow photochemistry), exchange of chemical constituents, sources of aerosol, polynya formation processes, sea ice production and bottom water formation, and cloud formation, which represent key processes for the atmosphere, ocean, and the cryosphere. AOI interactions are also triggered by and have feedbacks with synoptic systems and mesoscale weather phenomena such as cold air outbreaks, katabatic winds, and polar lows. Associated processes also include the effect of warm air advection and clouds on the surface energy budget and related boundary layer exchanges. Of increasing interest is the study of extremes such as heat waves and storms, but also extreme meridional transport events that can disturb the physical and chemical state of the high latitudes and may have a large impact on ecosystem changes. In addition, Arctic boundary-layer processes play an important role for local Arctic air pollution and for the health and ecosystem impacts thereof. In addition, understanding natural processes, including AOI interactions, is essential to the understanding of the background atmosphere to quantify the anthropogenic impacts. Shallow inversions, mostly during winter-time, lead to high air pollutant concentrations. Even though severe air pollution episodes are frequently observed in the Arctic, knowledge on urban emission sources and atmospheric chemical processing of pollution, especially under cold and dark conditions, are poorly understood.
This session is intended to provide an interdisciplinary forum to bring together researchers working in the area of boundary layer processes and high-latitude weather and climate (including snow physics, air/snow chemistry, and oceanography). Cryosphere and atmospheric chemistry processes are highly relevant to this session.
Conveners invite contributions in the following areas:
- Observations and research on the energy balance, physical and chemical exchange processes, and atmosphere-ocean-ice (AOI) interactions, including particle sources;
- Results from high-elevation sites where similar processes occur over snow and ice;
- Field programs, laboratory studies, and observational studies including remote sensing;
- Model studies and reanalyses;
- Advances in observing technology;
- External controls on the boundary layer such as clouds, aerosols, and radiation;
- Teleconnections between the polar regions and mid-latitudes resulting in effects related to atmosphere-ice-ocean interactions, as well as insights provided by monitoring of water vapor isotopes that shed light on air mass origins; and
- High-latitude urban air quality studies.
For more information or to submit an abstract to this session, go to:
For questions about this session, contact:
Email: heinemann [at] uni-trier.de
Email: michaelt [at] misu.su.se
Email: J.Browse [at] exeter.ac.uk
Email: julia.schmale [at] psi.ch
Email: giyoung [at] bas.ac.uk