The Sensor Intercomparison
and Merger for Biological and Interdisciplinary
Oceanic Studies (SIMBIOS) program
was initiated by NASA for monitoring the bio-optical properties of
the global ocean through ocean color remote sensing from space. The
of this initiative are:
- Determine spatial and temporal error fields for the
biological and geophysical data products from the various ocean
- Collect optical and biochemical data in oceanic and
coastal regions, including a cooperative international
bio-optical monitoring program in the Gulf of California.
- Develop and apply new algorithms for the retrieval of
productivity and other biogeochemical parameters from the
remotely sensed radiance via the IOP.
- Study the spatial and temporal variability of
bio-optical parameters in the Gulf of California.
The main goal of the SIMBIOS Project is to
ensure that the radiometric data from each ocean color satellite
sensor are well calibrated as well as insuring that the derived
products are accurately validated. A second objective of the Project
is to investigate new and novel methods for merging the data from
the various ocean color satellites in order increase the spatial and
spectral coverage of the oceans. In 1995, the International Ocean
Colour-Coordinating Group (IOCCG) was formed to undertake the
organization of an international SIMBIOS program.
The NASA program consists of the SIMBIOS Science Team and
the SIMBIOS Project Office. Besides providing administrative and
contract support for the science team, the SIMBIOS Project Office is
scoped to support four primary activities: 1) data product
validation, 2) sensor calibration, 3) data merger algorithm
evaluation, and 4) satellite data processing. The SIMBIOS Science
Team members are involved in radiometric and chlorophyll-a
validation, and the development of appropriate methods for combining
radiometric and derived bio-optical products from sensors with
different viewing geometries, resolutions (spatial, temporal, and
spectral), and other radiometric characteristics.