APPENDIX C. DATA REDUCTION 



Experience with the present NIMBUS-7 CZCS shows that an ocean color data 

 delivery system must have several general attributes. In particular such a 

 system must be capable of processing all cloud-free scenes, be fast enough 

 to accomplish processing without backlog, have methods of delivering 

 scientific outputs quickly, and provide near real-time methods of sensor 

 control, data indexing, and validation. Since an integral part of the 

 proposed experiment is concerned with global assessment it also assumed 

 that adequate capability must exist in the system to accomplish global 

 coverage. 



This scientific data delivery section is meant to give an overview of the 

 proposed paths for ocean color data from sensor to user. An outline of a 

 processing model is provided as well. These descriptions are not meant to 

 explicitly specify each component required, but rather to illustrate data 

 pathways, implicit assumptions concerning coverage, data availability, and 

 processing methodology. As such, this is a series of recommendations and 

 needs additional studies for optimization before implementation. 



General Assumptions: 



Global real-time digital downlink of original data with house- 

 keeping data is provided. 



Global reduced resolution non-real-time data is available. 



Tape recorded coverage is selectable in blank areas at full reso- 

 lution. 



All data is archived. 



A facility is provided to produce derived products. 



On-line catalog of ocean color data is provided. 



Users can submit request for alteration of tape recorded 

 coverage. 



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