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Model-data Integration and Network Design for Biogeochemical Research (CDAS)

May 20 – 31, 2002 Hosted by NCAR & Colorado State University. Model-data Integration and Network Design for Biogeochemical Research (CDAS). Overriding Themes in Carbon Cycle Research. Motivations for constraints on regional (~1000 km) scales are many and growing

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Model-data Integration and Network Design for Biogeochemical Research (CDAS)

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  1. May 20 – 31, 2002 Hosted by NCAR & Colorado State University Model-data Integration and Network Design for Biogeochemical Research (CDAS)

  2. Overriding Themes in Carbon Cycle Research • Motivations for constraints on regional (~1000 km) scales are many and growing • Challenges to determining regional CO2 fluxes involve both data and modeling • Integrated approach needed to move forward - data assimilation, network design

  3. TEMPERATURE (C) (IPCC, 2001) (NRCS/USDA, 1997) Regional scale is critical for linking to underlying processes (NRCS/USDA, 1997) CHLOROPHYLL (SeaWIFS, 2002)

  4. Relevant U.S. Planning Documents(Current U.S. carbon cycle expenditures $40-50M/yr) CCSP, 1999: +$135-300M 2000-2005 $200-250M/yr 2005- NACP, 2002: +$40-70M/yr 2002-2005 +$50-100M/yr 2005- LSCOP, 2002: $250M 2002-2006 $150M 2007-2011

  5. (from The Emerging International Greenhouse Gas Market, Pew Center on Global Climate Change, 2002) At $2 per ton CO2e: 0.1 GtC (~1/10 of current uncertainty on U.S. uptake and ~1/4 of current U.S. emissions above Kyoto obligation) would trade at approximately. . . $700,000,000.00

  6. Continental Signal Versus Noise Using Current Inverse Methodologies (TransCom, 2002)

  7. Unresolved variance presently contains most of the information on continental-scale fluxes

  8. (LSCOP, 2002)

  9. Many network design studies1 have been conducted, with similar results: • Need more data • continental, (South America, Africa, Siberia) • Southern Ocean • airborne 1e.g. Rayner et al., 1996; Gloor et al., 1999; LSCOP, 2002; Patra, subm. 2001; Suntharalingam, subm. 2002

  10. CDAS Approach • Bring together observationalists and modelers to form an integrated approach to improving our understanding of the global carbon cycle. • Initial effort: Network design exercises based on a selected assimilation modeling strategy. • Ongoing: Further development of the assimilation tool and support for testing and planning/educational use by the community.

  11. Technical Team • Roger Dargaville (CGD) • David Baker (ASP) • Steve Aulenbach (CGD) • Jennifer Oxelson (ESIG/ATD) • Kathy Fisher (CGD) • Dave Brown (SCD) • Mark Moore (SGD)

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