atmospherically corrected, chlorophyll values within a pass, 

 identified by latitude-longitude, on computer-compatible tape. 

 False color images or contoured maps of these Dasses are also 

 desirable. 



c. The same information is needed for the low-resolution global 

 data. However, since the global data will be primarily used in 

 the study of larger scale, longer term variations, the observa- 

 tions should be integrated and composited before delivery. Level 

 II low-resolution values should be stored on a monthly 100 km grid 

 and the mean values published monthly, after allowing three 

 months for processing, as contours on ocean scale maps. There is 

 no requirement for imaging individual passes, although individual 

 Level II tapes should be preserved for 6 months for selected pro- 

 cessing on request. 



d. All high- and low-resolution Level I tapes should be Dreserved in 

 an archive for 5 years. Users should have on-line, interactive 

 access to a catalogue of the archived data. 



e. The difficulty and cost involved in handling the flow from a high- 

 data-rate instrument such as this is realized. Ideally, all the 

 sunlit data from the satellite should be stored and processed at 

 high resolution. As a minimum, though, the ability to process 30 

 minutes of stored high resolution data per day to Level II chloro- 

 phyll values, and 150 minutes of stored low resolution data is 

 required. This would result in enough capacity to process the 

 ocean areas near the USA to high resolution and at least one hemi- 

 sphere at low resolution on a continuing basis (Table 4-2). It 

 would be highly desirable to double the low-resolution capacity 

 to be assured of worldwide coverage. Direct broadcasting of 

 high-resolution data on at least a 50 percent duty cycle would 

 fill in the gaps of recorded high-resolution stored data for 

 those users with ground receivers. It is strongly recommended 

 that the direct broadcast mode be designed so that there is 

 minimum impact to existing ground receiver stations used by 

 researchers outside NASA (see Appendix D). The system should be 

 similar enough to the existing NOAA infrared broadcast protocol 



5-8 



