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Model-data Integration and Network Design for Biogeochemical Research (CDAS)
May 20 – 31, 2002
Hosted by NCAR & Colorado State University
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
Regional scale is critical for linking to underlying processes
(NRCS/USDA, 1997)
(NRCS/USDA, 1997) (SeaWIFS, 2002)
CHLOROPHYLL
TEMPERATURE (C)
(IPCC, 2001)
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
(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
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
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.