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Dave Siegel |
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University of California, Santa Barbara |
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Full suite of satellite sensors are in orbit |
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Ocean color |
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Altimetry (sea level, eddies, dynamics) |
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SST (air-sea exchanges) |
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Scatterometry (wind stress) |
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Passive & active radar (sea ice, SST,
precip) |
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Data are freely available (but difficult to use) |
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Get forcing & some BGC response (just not
all) |
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Chlorophyll (SeaWiFS is within spec of 35% rms) |
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Primary production (via bio-optical models) |
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POC (via backscatter relationships) |
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CDOM (with links to photochemical cycling) |
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Indices for phytoplankton community structure |
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Solar fluxes into & within water column |
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Heterotrophy??? |
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Difficult determinations |
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pCO2 & NO3 have some
hope via regression analyses |
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DIC, DOC, f-ratio, BSi & export are less
hopeful |
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Aerosols obfuscate analyses of mineral dust
loading |
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Data assimilation |
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Enables satellite data to direct model solutions |
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Issues with using Chlorophyll (C/Chl, N/Chl
ratio, etc.) |
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Other products (POC, CDOM, etc.) are not used in
models |
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Satellite data sets are finally ready for prime
time |
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Forcing & system responses can be diagnosed
enabling bio-physical couplings to be assessed |
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Frontal and eddy interactions |
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Convective mixing and spring bloom events |
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Tropical and coastal dynamics |
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However, many important BGC system responses
remain beyond our reach |
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These new data streams enable new & novel
questions to be addressed |
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We are [almost] beyond the cal/val &
algorithm development stages |
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New era of biogeochemical oceanography is
approaching… hypothesis based science?? |
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Notes