Synoptic airborne thickness surveys reveal state of Arctic sea ice cover
Article first published online: 14 MAY 2010
Copyright 2010 by the American Geophysical Union.
Geophysical Research Letters
Volume 37, Issue 9, May 2010
How to Cite
2010), Synoptic airborne thickness surveys reveal state of Arctic sea ice cover, Geophys. Res. Lett., 37, L09501, doi:10.1029/2010GL042652., , , and (
- Issue published online: 14 MAY 2010
- Article first published online: 14 MAY 2010
- Manuscript Accepted: 8 APR 2010
- Manuscript Revised: 17 FEB 2010
- Manuscript Received: 23 JAN 2010
- Arctic sea ice;
- airborne electromagnetic sounding;
- ice thickness
 While summer Arctic sea-ice extent has decreased over the past three decades, it is subject to large interannual and regional variations. Methodological challenges in measuring ice thickness continue to hamper our understanding of the response of the ice-thickness distribution to recent change, limiting the ability to forecast sea-ice change over the next decade. We present results from a 2400 km long pan-Arctic airborne electromagnetic (EM) ice thickness survey in April 2009, the first-ever large-scale EM thickness dataset obtained by fixed-wing aircraft over key regions of old ice in the Arctic Ocean between Svalbard and Alaska. The data provide detailed insight into ice thickness distributions characteristic for the different regions. Comparison with previous EM surveys shows that modal thicknesses of old ice had changed little since 2007, and remained within the expected range of natural variability.