ArcticNet IRIS WorkshopArcticNet IRIS WorkshopProject 4.1Project 4.1

ArcticNet Modelling Scenarios Database (AMSD)

Jay AndersonDavid BarberWayne Chan

Jay Anderson

CEOS

University of Manitoba

jander@cc.umanitoba.ca

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• Archive model data in a simple format (ASCII)• Provide a portal into large datasets that cannot be

archived on site (NARR)• Geocode the data for incorporation into GIS programs• “cut” the data to fit individual IRIS’s• Provide a “vault” for model data as projects end and

move forward• Promote the IRIS concept

Project 4.1 Goals

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Project 4.1 Status (1)

• GEM data has been archived in geocoded ASCII since August– Northern hemisphere at this stage– 15-km resolution– Surface parameters (21)– Use only analysis fields (00 and 12Z)– Distributed as zipped text file (200K points) each

about 2 megs in size

Project 4.1 status (2)

• A portal into NARR data is complete– Not stored on site, but converted “on the fly” to fit

geocoded ASCII goal– 85 surface-based parameters (of 186)– Provided as a zipped text file

• A portal to DFO WebTide program • 2-terabyte hard drive delivered (Tang: 140 Mb for one

month of ice data in NetCDF format)

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Sample of GEM data output The GEM grid

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Current projects

• Build ftp site at the UofM for data upload• NetCDF to ASCII algorithm• Response from owners of datasets• Build ‘cutouts’ for new IRIS boundaries

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Project 4.1 near term

• Add Tang’s model data for the east coast to the archive (CECOM)

• Add Flato/Sou’s Archipelago ice model data to the archive

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Flato/Sou: Canadian Archipelago

• Ice-ocean coupled model, 22-km grid (0.2°)• 1950-2004 observed forcing• 2041-2060 climate model forcing• 24-layer ocean• 2 category ice, ice advection

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Model Domain

Depth (m)

Canada

Beaufort Sea

Nares St

Baffin Bay

Jones SoundVictoria

Island

Baffin Island

LancasterSound

WellingtonChannel

Greenland

Sou: Canadian Archipelago

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Tang: Canadian East Coast Ocean Model (CECOM)

• Daily data, September 2004-05• Nares Strait to Gulf Stream including Gulf of St Lawrence• 0.1° x 0.1°• 15-layer atmosphere, 21-layer ocean temp, salinity, velocity; sea surface elevation; ice concentration, thickness, velocity, pressure

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Other models of interestMaslowski:

Beaufort IRIS5 (Arctic)

Saucier:Hudson Bay Oceanic ModelSouthern Baffin

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Project 4.1 longer term

• Add data from other model runs• Archive new databases as they are created• Expand offering to include multiple datasets

in one request

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Responsibilities

• Use of model data in research projects requires a collaborative agreement with the originator (except for GEM and NARR data)

• If the model is in the public domain, then normal publication citations are required

• Normally costs associated with data collection, conversion, and storage will be borne by Project 4.1

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