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Pacific AO


Collaborators: T.Kikuchi, I.Semiletov, ....

Reconstruction of the circulation in Pacific Sector during 2008

Attention: all temperature, salinity, velocity and SSH fields are availabed upon request. Please send your requests to gleb@iarc.uaf.edu

Goals: (1) Reconstruct the circulation; (2) Estimates of the transport ; (3) Develope nested 4Dvar data assimilation system

Data: (1) Hydrophysicals surveys during June 15-November 15 2008 and October 1991 (2) 4 moorings with CTD and current meters (3) Bering Strait transport and moorings (4) Meteorological data

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Figure 1. Blue/green/yeallow dots - CTD surveys during July 15 - October 15 2008. Red dots - POPs . Black line - model domain

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Figure 2. First guess solution (before 4Dvar data assimilation): Evolution of Sea Surface Height from July 20 (J.D.201), 2008

Assimilation of the 10-days low-passed velocity and CTD data.

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Figure 3. Reconstructed circulatin SSH and velociti fields in the Pacific Sector of the Arctic Ocean during the summer-fall 2008.

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Figure 4. Reconstructed remperature and salinity in the Pacific Sector of the Arctic Ocean during the summer-fall 2008.