IPY: Collaborative research on carbon, water, and energy balance at flagship observatories and in a pan-

Arctic network

Donie Bret-Harte, Gus Shaver, Ed Rastetter, Donie Bret-Harte, Gus Shaver, Ed Rastetter, John Hobbie, Brian Barnes, Sergey ZimovJohn Hobbie, Brian Barnes, Sergey Zimov

Eugenie Euskirchen, Katey Walter, Anja Eugenie Euskirchen, Katey Walter, Anja Kade, Glenn Scott, Adrian Rocha, Gabrielle Kade, Glenn Scott, Adrian Rocha, Gabrielle

Tomasky-Holmes, Nikita ZimovTomasky-Holmes, Nikita ZimovUniversity of Alaska Fairbanks, Marine Biological Laboratory, NE University of Alaska Fairbanks, Marine Biological Laboratory, NE

Science Station, Cherskii, RussiaScience Station, Cherskii, Russia

Project Status and Progress

•Two eddy flux towers established at Imnavait Creek, AK, Sept. 07•Near real-time data available on our web site and linked to CADIS•Kalman filter modeling underway•Arctic Field Science course taught at Toolik Field Station, May 07

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Coordination and Integration

• Participation in AON PI and SAON meetings• April 08 workshop on carbon, water, and energy

balance across the pan-Arctic, Edmonton, Canada (in association with SAON 2 meeting)– Guests include representatives of sites in Canada,

Zackenberg, Sweden– Goal is to prepare for one or more data-driven syntheses of

pan-Arctic data on C, water, and energy balance

• Beginning to archive all of the RAISE project data in the Arctic LTER database, toward developing a pan-Arctic database of carbon, water, and energy flux data.

• Provide water flux data to Sturm AON project for calculation of sublimation

Future Directions & Planning for 2008 seasonFuture Directions & Planning for 2008 season• Instrument 40 m tower in Cherskii with CO2, H2O, energy

balance, and CH4 instrumentation, in coordination with NOAA– Equipment shipment to Russia has been delayed, but should be

leaving soon (we hope)

• Measurements of CO2, H2O, energy flux in large tundra burn NW of Toolik Field Station

• Continue measurements at Imnavait, 1st summer season• Arctic Field Science course offered again, in parallel with

Cherskii course (Walter & Holmes)• QA/QC and archive data according to FluxNet standards

(Arctic LTER site)• Planning for two additional workshops toward pan-Arctic

integration