rather than on computing requirements (i.e., the purview of CLASS) is consistent with the recommendations of the committee’s first report. Of course, the separate SDS and CLASS working groups should be closely coordinated. The committee recommends separating the working groups for SDS and CLASS, which have to be well coordinated but should function separately to advise their respective activities.
Figure 1 of this report is a revised version of the Figure 4.3 from the SDS Implementation Plan and illustrates how the committee envisions the separate SDS and CLASS working groups fitting into the advising structure. The SDS Working Group provides external advice and input to the FCDR and TCDR teams, while these teams also exchange direct guidance and input with the NOAA managers of the SDS program, who in turn report up through NOAA management to both the climate and the observing system leadership. Through its interaction with the CLASS Working Group, the SDS Working Group provides input to CLASS operations and CDR generation. Because the SDS Working Group will have to coordinate with multiple other advisory groups, it will be necessary to develop mechanisms, such as overlapping membership, to facilitate these interactions.