Arctic Sea Ice Variability and Trends, 1979-2006
Analysis of Arctic sea ice extents derived from satellite passive-microwave data for the 28 years, 1979-2006 yields an overall negative trend of -45,100 +/- 4,600 km2/yr (-3.7 +/- 0.4%/decade) in the yearly averages, with negative ice-extent trends also occurring for each of the four seasons and eac...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20080023287 2023-05-15T14:53:31+02:00 Arctic Sea Ice Variability and Trends, 1979-2006 Cavalieri, Donald J. Parkinson, Claire L. Unclassified, Unlimited, Publicly available [2008] application/pdf http://hdl.handle.net/2060/20080023287 unknown Document ID: 20080023287 http://hdl.handle.net/2060/20080023287 No Copyright CASI Oceanography 2008 ftnasantrs 2018-06-09T22:59:42Z Analysis of Arctic sea ice extents derived from satellite passive-microwave data for the 28 years, 1979-2006 yields an overall negative trend of -45,100 +/- 4,600 km2/yr (-3.7 +/- 0.4%/decade) in the yearly averages, with negative ice-extent trends also occurring for each of the four seasons and each of the 12 months. For the yearly averages the largest decreases occur in the Kara and Barents Seas and the Arctic Ocean, with linear least squares slopes of -10,600 +/- 2,800 km2/yr (-7.4 +/- 2.0%/decade) and -10,100 +/- 2,200 km2/yr (-1.5 +/- 0.3%/decade), respectively, followed by Baffin Bay/Labrador Sea, with a slope of -8,000 +/- 2,000 km2/yr) -9.0 +/- 2.3%/decade), the Greenland Sea, with a slope of -7,000 +/- 1,400 km2/yr (-9.3 +/- 1.9%/decade), and Hudson Bay, with a slope of -4,500 +/- 900 km2/yr (-5.3 +/- 1.1%/decade). These are all statistically significant decreases at a 99% confidence level. The Seas of Okhotsk and Japan also have a statistically significant ice decrease, although at a 95% confidence level, and the three remaining regions, the Bering Sea, Canadian Archipelago, and Gulf of St. Lawrence, have negative slopes that are not statistically significant. The 28-year trends in ice areas for the Northern Hemisphere total are also statistically significant and negative in each season, each month, and for the yearly averages. Other/Unknown Material Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Bering Sea Canadian Archipelago Greenland Greenland Sea Hudson Bay Labrador Sea Sea ice NASA Technical Reports Server (NTRS) Arctic Arctic Ocean Baffin Bay Bering Sea Greenland Hudson Hudson Bay Okhotsk |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Oceanography |
spellingShingle |
Oceanography Cavalieri, Donald J. Parkinson, Claire L. Arctic Sea Ice Variability and Trends, 1979-2006 |
topic_facet |
Oceanography |
description |
Analysis of Arctic sea ice extents derived from satellite passive-microwave data for the 28 years, 1979-2006 yields an overall negative trend of -45,100 +/- 4,600 km2/yr (-3.7 +/- 0.4%/decade) in the yearly averages, with negative ice-extent trends also occurring for each of the four seasons and each of the 12 months. For the yearly averages the largest decreases occur in the Kara and Barents Seas and the Arctic Ocean, with linear least squares slopes of -10,600 +/- 2,800 km2/yr (-7.4 +/- 2.0%/decade) and -10,100 +/- 2,200 km2/yr (-1.5 +/- 0.3%/decade), respectively, followed by Baffin Bay/Labrador Sea, with a slope of -8,000 +/- 2,000 km2/yr) -9.0 +/- 2.3%/decade), the Greenland Sea, with a slope of -7,000 +/- 1,400 km2/yr (-9.3 +/- 1.9%/decade), and Hudson Bay, with a slope of -4,500 +/- 900 km2/yr (-5.3 +/- 1.1%/decade). These are all statistically significant decreases at a 99% confidence level. The Seas of Okhotsk and Japan also have a statistically significant ice decrease, although at a 95% confidence level, and the three remaining regions, the Bering Sea, Canadian Archipelago, and Gulf of St. Lawrence, have negative slopes that are not statistically significant. The 28-year trends in ice areas for the Northern Hemisphere total are also statistically significant and negative in each season, each month, and for the yearly averages. |
author |
Cavalieri, Donald J. Parkinson, Claire L. |
author_facet |
Cavalieri, Donald J. Parkinson, Claire L. |
author_sort |
Cavalieri, Donald J. |
title |
Arctic Sea Ice Variability and Trends, 1979-2006 |
title_short |
Arctic Sea Ice Variability and Trends, 1979-2006 |
title_full |
Arctic Sea Ice Variability and Trends, 1979-2006 |
title_fullStr |
Arctic Sea Ice Variability and Trends, 1979-2006 |
title_full_unstemmed |
Arctic Sea Ice Variability and Trends, 1979-2006 |
title_sort |
arctic sea ice variability and trends, 1979-2006 |
publishDate |
2008 |
url |
http://hdl.handle.net/2060/20080023287 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic Arctic Ocean Baffin Bay Bering Sea Greenland Hudson Hudson Bay Okhotsk |
geographic_facet |
Arctic Arctic Ocean Baffin Bay Bering Sea Greenland Hudson Hudson Bay Okhotsk |
genre |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Bering Sea Canadian Archipelago Greenland Greenland Sea Hudson Bay Labrador Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Bering Sea Canadian Archipelago Greenland Greenland Sea Hudson Bay Labrador Sea Sea ice |
op_source |
CASI |
op_relation |
Document ID: 20080023287 http://hdl.handle.net/2060/20080023287 |
op_rights |
No Copyright |
_version_ |
1766325115715321856 |