Complex sentence: In 2009 scientists aboard the Greenpeace ship "Arctic Sunrise" conducted multi-disciplinary measurement at Petermann glacier to document detachment of a large area of the glacier to highlight Arctic environmental impacts of climate change ahead of the Copenhagen summit.
Split into simpler sentences: In 2009 scientists aboard the Greenpeace ship "Arctic Sunrise" conducted multi-disciplinary measurement at Petermann glacier. The goal was to document detachment of a large area of the glacier to highlight Arctic environmental impacts of climate change ahead of the Copenhagen summit.