Variations in the Arctic's multiyear sea ice cover: A neural network analysis of SMMR-SSM/I data, 1979-2004
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Abstract
A 26-year (1979-2004) observational record of January multiyear sea ice distributions, derived from neural network analysis of SMMR-SSM/I passive microwave satellite data, reveals dense and persistent cover in the central Arctic basin surrounded by expansive regions of highly fluctuating interannual cover. Following a decade of quasi equilibrium, precipitous declines in multiyear ice area commenced in 1989 when the Arctic Oscillation shifted to a pronounced positive phase. Although extensive survival of first-year ice during autumn 1996 fully replenished the area of multiyear ice, a subsequent and accelerated decline returned the depletion to record lows. The most dramatic multiyear sea ice declines occurred in the East Siberian, Chukchi, and Beaufort Seas.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Variations in the Arctic's multiyear sea ice cover: A neural network analysis of SMMR-SSM/I data, 1979-2004 |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2005GL022395 |
| Volume | 32 |
| Issue | 9 |
| Year Published | 2005 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Alaska Science Center |
| Description | 5 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geophysical Research Letters |
| First page | 1 |
| Last page | 4 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
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