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Hydrologie Metadata
Published in Praveen Kumar, Jay Alameda, Peter Bajcsy, Mike Folk, Momcilo Markus, Hydroinformatics: Data Integrative Approaches in Computation, Analysis, and Modeling, 2005
4.3 Metadata: Problems and Standardization4.3.1 Federal Geographic Data Committee4.3.2 International Organization for Standardization 19115:20034.3.3 Dublin Core Metadata Initiative4.3.4 Global Change Master Directory4.3.5 Mapping of Metadata Standards
An earth observation potential evaluation model and its application to SDG indicators
Published in International Journal of Digital Earth, 2022
Meng Jin, Ming Lin, Yufu Liu, Yuqi Bai
To facilitate global change studies, the National Aeronautics and Space Administration (NASA) has established the Global Change Master Directory (GCMD) keywords (Aleman 2017; Bukhres et al. 2000). GCMD is a hierarchical set of controlled Earth Science vocabularies to ensure that Earth science data, services, and variables are described in a consistent manner. It has been actively updated for over 20 years. Thus, this is the most comprehensive keyword system and is not constrained to EO variables. Apart from Earth science keywords, it contains 13 other categories, such as Earth science services, data centres/service provides, projects, instruments/sensors, etc. Because of its completeness, it has been extensively referenced for many EO variables. For example, CEOS maps their Missions, Instruments, Measurements (MIM) keywords, which are designed for key measurements of interest to users of EO satellite data, to GCMD keywords. CEOS, as an intergovernmental organization, sets its mission to coordinate space-based EO resources to make it easier for users to access data. Thus, MIM keywords are used to describe requirements within space-based capabilities (Han et al. 2016).