| Abstract: | Spatial and temporal variations in the age structure of Arctic sea ice are investigated using a new reverse chronology algorithm that tracks ice-covered pixels to their location and date of origin based on ice motion and concentration data. The Beaufort Gyre tends to harbor the oldest (>10 years old) sea ice in the western Arctic while direct ice advection pathways toward the Transpolar Drift Stream maintain relatively young (<5 years) ice in the eastern Arctic. Persistent net losses (-4.2%/yr) in extent of ice >10 years old (10+ year age class) were observed during 1989-2003. Since the mid-1990s, losses to the 10+ year age class lacked compensation by recruitment due to a prior depletion of all mature (6-10 year) age classes. Survival of the 1994 and 1996-1998 sea ice generations reestablished most mature age classes, and thereby the potential to increase extent of the 10+ year age class during the mid-2000s. |
| Genre: | Article |
| ProdID: | 1013397 |
| Citation Author: | Belchansky, G. I.; Douglas, D. C.; Platonov, N. G. |
| Citation Contributing Office: | Alaska Biological Science Center |
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| Citation Issue: | 18 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geophysical Research Letters |
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| Citation Search Results Text: | Spatial and temporal variations in the age structure of Arctic sea ice; 2005; Article; Journal; Geophysical Research Letters; Belchansky, G. I.; Douglas, D. C.; Platonov, N. G. |
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| Citation Volume: | 32 |
| Citation Year: | 2005 |
| Type: | citation/reference |
| Text: | Spatial and temporal variations in the age structure of Arctic sea ice; 2005; Article; Journal; Geophysical Research Letters; Belchansky, G. I.; Douglas, D. C.; Platonov, N. G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1029/2005GL023976 |
| Date Other: | Sat, 1 Jan 2005 00:00 -0600 |
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