Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Persistenter Identifier:: 856665355

Titel:: Proceedings of the Symposium on Global and Environmental Monitoring

Untertitel:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Erscheinungsjahr:: 1990

Erscheinungsort des Originals:: Victoria, BC

Verlag des Originals:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Sprache:: Englisch

Dokumenttyp:: Mehrbändiges Werk

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Persistenter Identifier:: 856669164

Titel:: Proceedings of the Symposium on Global and Environmental Monitoring

Untertitel:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Umfang:: XIV, 912 Seiten

Erscheinungsjahr:: 1990

Erscheinungsort des Originals:: Victoria, BC

Verlag des Originals:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustrationsangabe:: Illustrationen, Diagramme, Karten

Signatur der Quelle:: ZS 312(28,7,1)

Sprache:: Englisch

Nutzungslizenz:: Attribution 4.0 International (CC BY 4.0)

Herausgebendes Organ:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Verlag des Digitalisats:: Technische Informationsbibliothek Hannover

Erscheinungsort des Digitalisats:: Hannover

Erscheinungsjahr des Digitalisats:: 2016

Dokumenttyp:: Band

Sammlung:: Geowissenschaften

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Titel:: [WP-1 ADVANCED COMPUTING FOR INTERPRETATION]

Dokumenttyp:: Mehrbändiges Werk

Strukturtyp:: Kapitel

Kapitel

Titel:: DEVELOPMENT OF A DATA SET INDEX FOR THE GLOBAL CLIMATE RESEARCH PROGRAM. Donald R. Block and Edward H. Barrows

Dokumenttyp:: Mehrbändiges Werk

Strukturtyp:: Kapitel

DEVELOPMENT OF A DATA SET INDEX FOR THE GLOBAL CLIMATE RESEARCH PROGRAM Donald R. Block and Edward H. Barrows NSI Technology Services Corporation, Research Triangle Park, N.C. 27709 ABSTRACT The U.S. Environmental Protection Agency Global Climate Research Program (GCRP) is being set up to conduct multiple research efforts at many different laboratories distributed across the United States. Each of these research efforts will require very large quantities of data for analysis. The distributed nature of the research effort and the dynamic nature of the data itself argue against a centralized depository for all data. Distributed data systems, however, will cause redundancies when the same data set must be used at more than a single location. The establishment of independent data centers at each research location can be prohibitively expensive. At the same time, program management needs to be able to identify and act on a variety of data problems. A system design combining the elements of a centralized data set index and distributed processing proves to be both cost-effective and responsive to the research requirements. Based on a text-retrieval software platform, a centralized index provides information not only on the data sets being utilized in the research, but also facilitates the movement of data sets to other locations, and tracks the uses and users. The evaluation process and products that were examined in the analysis of alternatives indicate a clear choice in an innovative combined hardware/software platform. KEY WORDS: Data Set Index, Indexing, Data Management, Text Retrieval, Text BDMS INTRODUCTION The data set index (DSI) for the GCRP is a data base containing information about all the GCRP data sets. It is the mechanism that ties the multiple, geographically distributed physical data bases together into a single logical data system. The DSI does not function as a master data dictionary like IBM’s Repository or DEC’S Common Data Dictionary. The DSI stores general descriptive metadata about GCRP data sets that can be used by scientists for reviewing and locating these data sets. The DSI for the GCRP contains descriptive information about a data sets’ spatial and temporal density and extent, parameters, usefulness, usage, and quality. It identifies the sources of data sets and monitors their movement throughout the GCRP information system. This paper outlines the design and development approach used to identify and implement a practical and effective method of storing and retrieving metadata about data sets for the United States Environmental Protection Agency (EPA) GCRP. BACKGROUND research effort often requires information from many separate sources such as; universities, foreign governments, local governments, other federal agencies and from within EPA. Early in the development of the data management plan for the GCRP it was determined that, since the research effort would be widely distributed, the pertinent data should be located and managed at locations in close proximity to the research. However, it was evident that the management of this distributed data would require some degree of centralization. To facilitate project research, reduce redundancy, and promote data sharing, a centralized method of monitoring and reporting the available GCRP data sets led to the concept of a data set index (DSI). DESIGN The initial question that arose during the design phase was "Who would use the DSI and for what purposes?". Answering this question would help identify the kind of data to be stored in the DSI. Since the concept for the DSI arose to promote data sharing and to facilitate cross project research it was evident that the primary users of the DSI would be scientists looking for data sets that supported their research objectives. To make this kind of determination scientists required that the DSI store more than just simple The organization of the EPA GCRP consists of multiple research efforts located at EPA laboratories throughout the United States. Each 305

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