Snow-cover dynamics and variability drives ecosystem processes across multiple spatial scales in Greenland

PhD defence, Friday 24 February 2017. Cand.scient. Stine Højlund Pedersen

2017.02.24 | Steffi Hjerrild Iversen

Stine Højlund Pedersen

In ice-free Greenland, extensive knowledge and an improved mechanistic understanding of interactions between abiotic and biotic ecosystem components have been gained from observations collected at the Greenland Ecosystem Monitoring (GEM) sites during the past 10-20 years. This PhD project was initiated to facilitate an understanding of these interactions also in between observational sites using up-scaling. Since, the seasonal snow cover is a key driver of changes in Arctic ecosystems, snow is the main focus of this interdisciplinary study. During her studies, Stine Højlund Pedersen quantified the spatial and temporal changes and variability in snow characteristics across multiple spatial scales and time periods in ice-free Greenland, and investigated the effects of the snow changes and variability on the biotic components of the ecosystems. This was accomplished by combining ground-based observations, spatio-temporal snow and atmospheric modeling tools, and remotely sensed vegetation greenness in a stepwise up-scaling to gradually larger domain extents.

The PhD degree was completed at Arctic Research Centre, Department of Bioscience, Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Friday 24 February 2017 at 13.00.
Place: Building 112, Niels Bohr Auditorium, Department of Bioscience, Aarhus University Roskilde, Frederiksborgvej 399, 4000 Roskilde.
Title of dissertation: Scaling-Up Climate Change Effects in Greenland.
Contact information: Stine Højlund Pedersen, e-mail: shp@bios.au.dk, tel.: +45 30183169.
Members of the assessment committee:
Associate Professor Dr. Marc Macias-Fauria, School of Geography and the Environment, University of Oxford, UK.
Professor Dr. Jason E. Box, Department of Glaciology and Climate, The Geologic Survey of Denmark and Greenland (GEUS), Denmark.
Dr. Morten Frederiksen (chair), Department of Bioscience, University of Aarhus, Denmark.
Main supervisor:
Senior Researcher Dr. Niels Martin Schmidt, Arctic Research Centre, Department of Bioscience, Aarhus University.
Co-supervisors:
Dr. Mikkel P. Tamstorf, Arctic Research Centre, Department of Bioscience, Aarhus University.                                                                          
Dr. Glen E. Liston, Cooperative Institute for Research in the Atmosphere (CIRA), Colorado State University, Fort Collins, Colorado, USA
Language: The PhD dissertation will be defended in English

The defence is public.
The dissertation is available for reading at the Graduate School of Science and Technology/GSST, Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 23.08.2017