this data to the Ocean Color Processing Facility. Data rate is a 

 standard NOAA channel at 1.33 mbits/second. A low-speed command 

 channel, NOAA vice 9.6 kbits/second, is provided for communica- 

 tion of sensor command information back to the spacecraft. 



b. Ocean Color Processing Facility (OCPF). The OCPF will take raw 

 telemetry stream data from the Central Processing Facility and 

 convert it to computer-compatible form. This form, along with 

 time, location, calibration, and cloudiness data attached will be 

 archived. Note that this function requires a human, "Ml," in 

 Figure C-2, to perform cloud screening; the remainder is auto- 

 matic. "Users" in Figure C-2 refers to the UIF. The atmospheric 

 correction procedure is schematized on the right hand side of 

 Figure C-2 Another human, "M2," has been included to locate 

 "clear water" to serve as base areas for atmospheric correction. 

 "Derived parameters" include chlorophyll and diffuse attenuation 

 coefficient. 



c. Archive . Primary data and processed data is located in the 

 archive. At a minimum it is assumed the archive will contain 

 time, location, spacecraft altitude and health, calibration, raw 

 data, processed data, and derived products. Users will not have 

 direct access. This could be part of an existing archive. 



d. User Interface Facility (UIF) . The UIF is envisaged to be the 

 information server for individual scientists. The UIF would 

 provide located, calibrated imagery in pictoral or digital format 

 to interested investigators after processing at the OCPF. It 

 would maintain catalogues of image availability, cloudiness, and 

 proposed satellite coverage. These catalogues would be user 

 accessible and, in the case of proposed coverage, subject to 

 alteration/qualification by the interested investigators. User 

 communication with the UIF would be via telephone circuits at 

 rates of 4800 baud. 



C-4 



