- Greenland ice and Arctic climatologist with more than 20 lead and more than 110 co-authored journal articles
- Professor in Glaciology and Climate at The Geologic Survey of Denmark and Greenland (GEUS) with over 70 journal articles at GEUS since 2013
- 30 Greenland expeditions since 1994, more than 1 year camping on ice
- installed and maintained a network of more than 20 automatic weather stations on Greenland’s inland ice in expeditions spanning 1994-present.
- Ohio State University teaching 2003-2010 with emphasis on atmosphere-surface interactions, physical climatology at local to global scales, and environmental problems.
- Byrd Polar Research Center Fellow and Researcher, 2002-2012
State of the Climate
- contributing author to Intergovernmental Panel on Climate Change (IPCC) fourth, fifth and sixth assessment reports.
- lead author on Arctic Monitoring and Assessment Program (AMAP) report chapters in 2017 and 2018
- contributor to the Danish Polar Portal web site providing near-realtime climate and Greenland ice sheet mass balance monitoring and end of melt season reports since 2013.
- lead author on Greenland section for The Bulletin of the American Meteorological Society’s annual State of the Climate reports 2003-2012.
- 2004-2012 led composition of the Greenland entry to NOAA’s Arctic Report Card, published since 2006 by The US National Oceanic and Atmospheric Administration .
- 2017, 2018 and 2019 ski-based Greenland ice sheet snow surveys
- Expeditions involved traversing 1000s of km by snow mobile.
- Most of the inland ice camps are accessed by helicopter and ski-equipped airplane.
- Instrumenting glaciers flowing out from the inland ice sheet has involved using ships and sail boating. See Youtube Channel
- Organising Greenland inland ice expeditions in 2013 and 2014 part of the Dark Snow project.