TPIO Project Spotlight

The NOAA Observing System Integrated Analysis (NOSIA-II) is a capability used to document the relationship between available observing systems and their impact on NOAA’s diverse services and scientific objectives. Understanding the relationship between the cost of available data sources and their impact on mission outcomes is fundamental to informing current and future observing system investments and managing NOAA’s observing system architecture.

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Searchable TPIO Glossary

TPIO maintains a glossary of technical terms that are in frequent use internally that may not be familiar to those who work in other parts of NOAA. The online version of the TPIO Glossary is presented as a searchable HTML table. The glossary includes terms used in the Earth Observation Requirements Evaluation System (EORES), which is a website that displays data records from TPIO’s catalog of observing systems, user requirements for environmental information and value trees. A value tree is a hierarchical data set that connects NOAA’s organizational objectives with data products and the environmental observations collected by various observing systems.

Looking for geocoverages? A sub-glosssary for geographical coverage definitions is also available.

If you have any questions or corrections concerning the contents of this glossary, please contact the TPIO Communications and Outreach (TCO) team at

If you would like to add a new term and definition, or update or remove an existing term and definition, please follow the link to the TPIO Glossary Request Form. The TPIO Technical Glossary is updated on a quarterly basis.

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