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Your location: Home > Adaptation > Nairobi Work Programme > Knowledge Resources and Publications |
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Compendium on methods and tools to evaluate impacts of, and vulnerability and adaptation to, climate
change
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CASA (Carnegie-Ames-Stanford Approach) Model
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Description
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Calculation of monthly terrestrial NPP is based on the concept of light-use efficiency, modified by
temperature and moisture stress scalars. Soil carbon cycling and Rh flux components of the model are
based on a compartmental pool structure, with first-order equations to simulate loss of CO2 from
decomposing plant residue and surface soil organic matter (SOM) pools. Model outputs include the
response of net CO2 exchange and other major trace gases in terrestrial ecosystems to interannual
climate variability (1983 to 1988) in a transient simulation mode.
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Appropriate Use
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Climate change analysis of ecosystem productivity.
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Scope
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Global to regional.
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Key Output
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Global gridded estimates of primary production, above and below ground biomass, leaf area index
(LAI), and trace gas fluxes.
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Key Input
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Air surface temperature and precipitation are used together with long-term (30-year) mean values, and
surface solar irradiance measurements.
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Ease of Use
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Expertise of ecosystem and biogeochemistry science.
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Training Required
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Yes
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Training Available
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No formal training offered.
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Computer Requirements
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Computer access
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Documentation
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http://geo.arc.nasa.gov/sge/casa/index4.html
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Applications
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Estimate of current ecosystem productivity.
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Contacts for Framework, Documentation, Technical Assistance
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Christopher Potter
Ecosystem Science and Technology, NASA Ames Research Center, Moffett Field, CA USA; Tel:
650.604.6164; Fax: 650.604.4680; e-mail: cpotter@gaia.arc.nasa.gov
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Cost
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Not specified
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References
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See http://geo.arc.nasa.gov/sge/casa/pubs.html for full
publication list.
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