Arctic System Model workshop IIIArctic System Model workshop III

Montreal, Canada, July 17Montreal, Canada, July 17thth, 2009, 2009

10:50 – 11:1010:50 – 11:10

Ocean/Atmosphere observationsOcean/Atmosphere observationsA. Proshutinsky, WHOI A. Proshutinsky, WHOI

a)a) Model forcing validationModel forcing validation

b)b) Data for oceanic model validationData for oceanic model validation

Data Coverage: 1954-1991 and 2003-Data Coverage: 1954-1991 and 2003-20062006Temporal SpatialTemporal Spatial

Model forcing validation: Model forcing validation: Air temperature, humidity, SLP, wind, SLP, cloudiness from NCAR/NCEP Air temperature, humidity, SLP, wind, SLP, cloudiness from NCAR/NCEP can be validated based on North Pole stations can be validated based on North Pole stations

Sea Sea level level

Fresh water andFresh water andheat contentheat content

Mixed LayerMixed Layerthicknessthickness

Water volume,Water volume,heat and saltheat and salt

fluxes via straitsfluxes via straits

Water Water circulationcirculation

Hydrography:Hydrography:T and ST and S

Ocean model Ocean model validation validation

parametersparameters

Sea Level data sources

Monthly mean relative sea levels were provided by the Arctic and Antarctic Research Institute for 71 stations (see station numbers) located in the Barents and Siberian Seas. The time series of sea level variability generally cover the period between 1948 and 2008 but temporal coverage differs significantly from station to station. Red denotes stations with the most complete datasets. The best data are available from 9 stations (blue circles) for the period 1954 – 2008.

http://www.whoi.edu/science/PO/arcticsealevelhttp://www.whoi.edu/science/PO/arcticsealevel//

1850 1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000

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Ocean data: T,S, currentsOcean data: T,S, currents T&S for 1846-2006: 583138 oceanic stations (AARI data archive)

Currents: 2250 mooring sites with 9735 months data (thanks Greg Holloway for data collection)

Model-mooring error: 0.37Model-mooring error: 0.37 Model-mooring error: 0.3Model-mooring error: 0.3

Reconstructed circulation/fields: a) Chukchi Sea, Panteleev et al., JRG, 2009, submitted

Circulation of the Kara Sea based on modeling with data assimilation, Circulation of the Kara Sea based on modeling with data assimilation, Panteleev et al., JGR, 2007.Panteleev et al., JGR, 2007.

Fram Strait fluxes, AWI

Bering Strait fluxes, T. Weingartner (UAF), R. Woodgate (UW)

Fresh water and heat content