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Primary production group ARCSS SASS mtg

Primary production group ARCSS SASS mtg. David McGuire * Also include: Lou Codispoti Marc Stieglitz (SNACS) Dick Zimmerman Torre Jorgenson (SNACS) Paty Matrai Chien-Lu Ping (SNACS) Victoria Hill Jim McClelland (SNACS) Ann Hessen Howie Epstein Jinlun Zhang Skip Walker

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Primary production group ARCSS SASS mtg

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  1. Primary production groupARCSS SASS mtg • David McGuire * Also include: • Lou Codispoti Marc Stieglitz (SNACS) • Dick Zimmerman Torre Jorgenson (SNACS) • Paty Matrai Chien-Lu Ping (SNACS) • Victoria Hill Jim McClelland (SNACS) • Ann Hessen Howie Epstein • Jinlun Zhang Skip Walker • Matt Berman Brad Moran (SBI 3) • Carin Ashjian (also SBI 3) • Rob Campbell • Manfredi Manizza • Yvette Spitz • Needed: Time, additional resources, and teleconferencing • Request ARCUS to organize a small working workshop with computers in Sept 2008 • Points of contact: McGuire, Zhang, Matrai

  2. Primary production group • Data exchange: field chl, PP, nutrients, satellite chl; simulated PP (2 models), DOC; • Products = Papers (within lifetime of projects): • Model (2 = McGuire-Zhang), data (4 = 14C-PP, nuts, chl, satellite; Matrai) marine PP comparison (3 projects: McGuire-Zhang-Matrai) • Ocean model-model PP comparison (2 projects: McGuire-Zhang) (beyond lifetime and scope of project) • Marine-land PP (McGuire et al. project) • Land-land PP (McGuire-Walker) • New Results • predict PP values for regions where gaps exist • use standard IPCC scenarios

  3. Primary production group • Needed: • Time, additional resources, small working workshop(s) with computers, and/or teleconferencing • FUTURE NEED= Fully coupled, community, high latitude snow-ice-ocean-land-atmosphere model • Cool model runs in future proposals: • with decreased insulation or albedo • with increased grazing

  4. Primary production Gaps: • Partitioning of panarctic sources of cDOM (where is it coming from?) • Bioavailability of DOM • Chl partitioning between ice algae and phytoplankton • PP controls • Top down trophic controls • N cycling (land - rivers - ocean)

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