Presentations (order may change):
Title: Onboard Classification of Satellite Images
Description: Recent advances in space technologies have led to a substantial increase of both the amount and the quality of image data produced by satellites. However, communication capabilities of satellites remain limited. To assure that the most relevant data is selected for transmission, it is necessary to classify it on a satellite directly. The talk will give a brief overview of challenges and potentials associated with onboard image classification.
Description: Title: Modeling Permafrost Sensitivity in High Latitude Forest
Description: Boreal forests in permafrost regions are an essential component of regional and global climate patterns. Climatic change can trigger extensive ecosystem shifts such as the partial disappearance of near-surface permafrost or changes to the vegetation structure and composition. Here, I present a tailored version of a one-dimensional land surface model, adapted for the application in vegetated areas, and used to reproduce the vertical exchange of radiation, heat, and water in boreal forests. This physically-based modeling approach helps us understand how the interactions between the vegetation, permafrost, and the atmosphere stabilize the forests and the underlying permafrost.
Title: A Graph-Based Approach to Monitoring Thermokarst Degradation
Description: At the surface, permafrost landscapes can exhibit very regular polygonal patterns, where polygon boundaries are defined by the arrangement of ice-wedges in the ground. With warmer temperatures, this ice begins to melt, initiating local subsidence and the formation of troughs at these polygon edges. With ongoing degradation, the changing topography has extensive implications for surface hydrology of entire landscapes. I present an approach to represent the network of channels as a graph and monitor the degradation over time with graph analysis methods.
There will be time for Q&A and discussion afterwards.
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