Modeling Recent Climate Variability in the Arctic Ocean,” at The Naval Postgraduate School Modeling Effort (Web site). Naval Postgraduate School
Abstract. Dramatic changes in the circulation of sea ice and the upper layers of the Arctic Ocean have been reported during the last decade. Similar variability is modeled using a regional, coupled ice-ocean model. Realistic atmospheric forcing elds for 1979-93 are the only interannual signal pre-sc...
| Main Authors: | , , , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.462.5980 http://www.oc.nps.edu/sbi/ModelingRecentClimateVariability.pdf |
| Summary: | Abstract. Dramatic changes in the circulation of sea ice and the upper layers of the Arctic Ocean have been reported during the last decade. Similar variability is modeled using a regional, coupled ice-ocean model. Realistic atmospheric forcing elds for 1979-93 are the only interannual signal pre-scribed in the model. Our results show large-scale changes in sea ice and oceanic conditions when comparing results for the late 1970s / early 1980s and the 1990s. We hypothesize that these changes are in response to even larger scale atmo-spheric variability in the Northern Hemisphere that can be de ned as either the Arctic Oscillation or the North Atlantic Oscillation. Agreement between the direction and scale of change in the model and observations, in the absence of in-terannual forcing from the global ocean thermohaline circu-lation, suggests that the atmospheric variability by itself is sucient to produce basin-scale changes in the Arctic Ocean and sea ice system. 1. |
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