655 



to analyze these data, all of the data should be analyzed, even 

 those data from areas outside of die releasabie geographic 

 region. 



d. Findings 



The iindiiigs relative to ice keel depth acoustic data are: 



• The data from upwaid-iooking submaiiDe sonar measure- 

 ments of ice are the only quantitative measures of under ice 

 structure available to studies of under-ice topography and 

 climate. 



• Archival analog data from about SO exercises still exist. 

 These data were found to be of sufficient quality that they 

 could be reduced sjid processed to create a digital database. 

 The analog data, in classified form, should be digitized and 

 put into a database along with the supporting information 

 (tracks), and then reduced to a geolocated time series of ice 

 thickness. This classified database should then be archived 

 at NAVOCEANO pending possible declassification, prior 

 to which it should be made accessible in its classified form to 

 appropriately cleared scientists. 



• All of the data, both analog and digital, within the area 

 already identified by the Navy as containing releasabie daia 

 for future submarine scientific cruises, should be provided to 

 the scientific community for its use (in accord with current 

 Navy plans). 



• The unclassified Ice Profile Database V 3 . 1 could be a useful 

 composite reference containing ice structuie if modified to 

 contain more detailed data (less averaging). 



• The Navy's ice draft acoustic data, accumulated over about 

 30 years, is likely to prove valuable in developing more 

 accurate methods for measuring ice thickness by aircraft and 

 satellite remote sensing (e.g. ERS-I and Radarsatl 



» Bothunclassifiedandclassifieddatashouldbeprocessedand 

 archived in such a way that temporal changes of ice thickness 

 ; and thickness distributions are fully preser/ed. Regional 

 j^, averages and their changes in time can be derived as needed 

 't. if the primary data are fully documented. 



D. OCEAN VOLUME AND BOUNDARY PROPERTIES 



I. REALTIME SALINITY AND TEMPERATURE 

 FIELDS (GOODS) 



a. Data Description 



The Global Oceanographic Observation Data Set (GOODS) 

 contains a wide variety of ocean measurements collected from 

 drifting buoys, moorings, ships, and aircraft (primarily vertical 

 profiles of temperature and temperature/salinity data with some 

 observed sound speed profiles and surface temperature values, 

 similar to MOODS). These are near realtime data that are 

 relayed to FNMOC and NAVOCEANO and loaded into a 

 database for access the next day. GOODS coverage is worldwide. 

 These daily observations provide a new look into ocean pro- 

 cesses that has previously been unavailable to most of the ocean 

 science conununity. 



Data are stored in an on-line accessible database for a period of 

 approximately three months. To the panels knowledge, the 

 GOODS data set is the only realtime, quality-controlled, 

 network-accessible collection of surface ocean observations 

 available anywhere. Availability of this data set is of primary 

 interest to ocean modelers and analysts. It would be of immense 

 immediate interest to vanous researchers for validating satellite 

 observations. 



Figure 19 illustrates the global nature of one component of 

 GOODS holdings, those in the "restricted" category. It is 

 important to note the large number of measurements, even 

 within this limited category, that are typically accomplished in 

 the short period of five months. 



b. .Accessibility 



Many of the GOODS data are obtained from unclassified 

 sources. However, Navy ships also contribute to the databases, 

 and the locations of these ships are usually classified while they 

 are out of port. As a result, some individual data entries in the 

 database are classified, and because of the regulations governing 

 processing and storage of classified digital data, the entire 

 GOODS database must be handled as classified. 



Data are stored on-line and can be accessed electronically. Data 

 accessed at a summary level (like sea surface temperature 

 contours) can be used as unclassified material. 



27 



