Forskningsisbrytaren Oden på expedition till Ryderglaciären i nordvästra Grönland
Icebreaker Oden during the expedition Ryder 2019. Photo: Martin Jakobsson.

Ryder 2019

Ryder 2019 is a research expedition on board the Swedish icebreaker Oden to the remote Ryder Glacier in northwest Greenland. By mapping the area around the glacier, researchers can find patterns and causes of historical changes of the glacier. This knowledge can help us understand how the marine cryosphere is affected by climate change.

About the research expedition

The Ryder 2019 expedition with the Swedish icebreaker Oden was a multidisciplinary expedition, spanning the fields of atmospheric chemistry and physics, biology, climatology, ecology, genomics, glaciology, oceanography, marine geology, geophysics, geochemistry and archaeology. The overarching goal is to investigate the dynamics and development of the marine cryosphere and ocean conditions over time in the marine realm of Ryder Glacier; more specifically in the Sherard Osborn Fjord and adjacent area of northern Nares Strait and the southern Lincoln Sea. Earth’s marine cryosphere includes glaciers extending into the ocean, ice sheets with their base suppressed below sea level, sea ice, gas hydrates and subsea permafrost.

Previous research

The Ryder 2019 project is a continuation of the expedtion to the Petermann Glacier in 2015. During the Petermann 2015 expedition, the Petermann Fjord and adjacent area of Hall Basin were investigated. The setup for the Ryder 2019 expedition is nearly identical.

Co-Chief Scientists

Martin Jakobsson
Department of Geological Sciences, Stockholm University

Larry Mayer
Center for Coastal and Ocean Mapping/Joint Hydrographic Center, University of New Hampshire, USA

Scientific motivation

One of the primary scientific motivations of the expedition is related to the role of outlet glaciers, such as Ryder Glacier, draining the Greenland Ice Sheet into the ocean. The dynamics of Greenland’s outlet glaciers represent an essential, but poorly constrained, part of our understanding of future sea-level rise in a warming climate. Critical to their stability are the roles of sea ice, floating ice tongues, bedrock and the shape of the seafloor.

The goal is to collect contextual data including information about the physical shape of the seafloor and its uppermost structure and geological composition, ocean conditions, as well as information about meltwater influx from the glaciers in the survey area. These data are needed from this poorly explored region to better constrain the numerical models needed to predict and assess the potential contribution of northern Greenland’s Ice Sheet to future sea-level rise.

Scientific questions

Some of the more specific key scientific questions include:

  • What  are  the causes  for  observed  patterns  and  sudden  dynamic  changes  of  the  marine cryosphere of northern Greenland?
  • What  is  the  potential  contribution  to  global  sea-level  rise  from  the  northern  sector  of  the Greenland Ice Sheet in a warming climate?
  • What  are  the  dynamic  roles  of  floating  ice  tongues  and  sea  ice  for  the  stability  of  northern Greenland outlet glaciers?
  • How does geology (bedrock and/or the shape of the seafloor) control the retreat dynamics of the northern Greenland Ice Sheet?
  • What  is  the  role in  accelerating  glacial  melting of  inflowing  warmer  water  of  Atlantic  origin towards the outlet glaciers?
  • What  are  the  effects  of  glacial  meltwater  for  the  nutrient  budget  and  productivity  of  the coastal marine ecosystem?
  • What are the effects of glacial meltwater on the CO2 system and ocean acidification?