Review of NASA's Distributed Active Archive Centers (1999) / Chapter Skim
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Executive Summary
Executive Summary
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are reasonably placed to address the challenges entailed by this launch. However, for the DAACs effectively to fulfill the expectations for them, EOSDIS will need inspired leadership to create a practical network of information centers that truly enables scientific discovery and assessment and integrates the creative energies of the DAACs, their scientific communities, and the pilot Federation of Earth System Information Partners.
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the ECS contractor designs the EOSDIS Core System to capture, process, and distribute data from the EOS instruments and provides the necessary hardware and software to the DAACs; · the science and instrument teams develop algorithms for creating data products; · the seven DAACs process and disseminate remote sensing and in situ data and data products (land, atmosphere, ocean) , and provide services to a wide variety of users (primarily scientists and NASA's partner agencies)
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AN INFORMATION SYSTEM FOR SCIENCE EOSDIS is more than the hardware and software needed to link the DAACs; it is a tool for achieving the science goals of the Earth Science Enterprise. The objectives of EOSDIS include the following: · facilitating the creation of standard data products, thereby permitting the immediate scientific goals of the science teams to be realized; · catalyzing the preparation of a wide range of secondary data sets and information products that combine information from different satellites and in situ sources, thereby stimulating collaborative, multidisciplinary research; · making such products readily accessible to the broader scientific community; and · preserving them in usable form for future generations of scientists.
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offers comparable access technologies, a consistent terminology, and unobtrusive authorization procedures. If such a system is not possible, NASA will have to provide sufficient resources (e.g., through requests for proposals to participate in NASA's federation)
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To fulfill the science objectives of the Earth Science Enterprise, however, the DAACs also have an obligation to ensure that the data in their charge remain useful for future generations of scientists studying long-term global environmental change. Consequently, the DAACs must be involved in all stages of data management from data collection, to management of active data sets, to longterm archive.
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In order better to track the rapidly growing and evolving population of EOSDIS users and serve the needs of existing and potential users, each DAAC should devise and implement quantitative measures for characterizing its current user community. Recommendation.
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The DAACs that will receive data from the AM-1 platform and other near-term launches are reasonably placed to address the challenges that launch will entail, given the uncertainties associated with the EOSDIS Core System. However, for the DAACs to fulfill their mission of providing seamless access to multidisciplinary data sets, and thereby promoting creative scientific analysis of the data, EOSDIS will need inspired leadership that empowers its stakeholders to fulfill their special roles within an integrated network of information centers.
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