radiometric correction is the primary consideration in the 

 provision of both digital CCTs and images. Geometric 

 correction is also important in determining the geographic 

 location and configuration of features such as ice floes, 

 open leads, etc. Science for sea ice applications, full 

 geometric and radiometric correction, will be required for 

 both digital tapes and images; longer turnaround times 

 will permit the accomplishment of precision processing. 



d. Oceans 



Requirements are similar to those of the Ice Team in that 

 the end use (operational or scientific) of the data will 

 influence the degree of processing and the delivery time 

 required. Geometrically and radiometrically corrected 

 digital tapes and images will be essential in all cases. 



e. Discussion 



All teams emphasize the use of computers for analysis, 

 with images playing an important role in some 

 applications. Radiometric correction will maximize the 

 amount of information that can be extracted from the data; 

 geometric corrections will facilitate the registration of 

 obtained information to base maps or with other available 

 data. It is generally agreed that geometrically and 

 radiometrically corrected digital tapes and images must be 

 available on demand. 



7, Process Time 



Requirements for process time or timeliness stated by 

 applications teams are summarized as follows: 



a. Renewable Land Resources 



Time from data acquistion to the delivery of a usable 

 product varies widely with the type of product required 

 and its specific application. 



b. Nonrenewable Land Resources 



Image quality rather than rapid delivery is stressed. The 

 optimal 2-week, and acceptable 1-month, delivery time is 

 acceptable for delivery of a specific scene since it is 

 doubtful that the entire Canadian landmass will be covered 

 within a 15-day time period. 



5-15 



