Return of the cold halocline layer to the Amundsen Basin of the Arctic Ocean: Implications for the sea ice mass balance
Article first published online: 7 JUN 2002
Copyright 2002 by the American Geophysical Union.
Geophysical Research Letters
Volume 29, Issue 11, pages 8-1–8-4, June 2002
How to Cite
Return of the cold halocline layer to the Amundsen Basin of the Arctic Ocean: implications for the sea ice mass balance, Geophys. Res. Lett., 29(11), doi:10.1029/2001GL014157, 2002., , , , ,
- Issue published online: 7 JUN 2002
- Article first published online: 7 JUN 2002
- Manuscript Accepted: 4 APR 2002
- Manuscript Received: 1 OCT 2001
 CTD measurements from the Arctic Ocean 2001 expedition reveal that the cold halocline layer (CHL) has returned to the Amundsen Basin at a position close to that found during the Oden'91 expedition. River water from the Siberian shelves formed a strong freshwater front in the Amundsen Basin, extending from the Gakkel Ridge to the Lomonosov Ridge. Furthermore, we show from model computations that the presence of a CHL may increase winter sea ice growth by 0.25 m over one season compared to a case with a non-existing CHL due to increased vertical heat flux from the warm Atlantic water. The difference in sea ice growth is due to a much shallower winter convection with a CHL present, which is not able to reach into the warm Atlantic layer, resulting in a considerably smaller oceanic heat flux.