USGS - science for a changing world

USGS CEOS Activities

  • Working Groups

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    CEOS Working Groups address topics such as calibration/validation, data portals, capacity building, disaster management, climate, and common data processing standards shared across a wide range of Earth observation domains.

  • Virtual Constellations

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    The CEOS Virtual Constellations coordinate space-based, ground-based, and/or data delivery systems to meet a common set of requirements within a specific domain.

  • Ad Hoc Teams

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    CEOS has the ability to create an Ad Hoc Team in the event that permanent mechanisms (Working Groups and Virtual Constellations) are insufficient for CEOS to undertake a particular activity.

In The News

End User Services

USGS EROS, Landsat Play Major Roles in CARD4L

The efforts of the Committee on Earth Observation Satellites (CEOS) Land Surface Imaging Virtual Constellation (LSI-VC) to bring CEOS Analysis Ready Data for Land (CARD4L) products quickly and easily to countries and international organizations continue to receive important support from USGS EROS.

With ongoing work on global Landsat Analysis Ready Data (ARD) that it hopes to begin processing as part of Collection 2 in late 2019, USGS is defining a product that is CARD4L compliant on measurements like surface reflectance and surface temperature. Such compliance means Landsat data eventually will be much more interoperable with other systems, such as the European Space Agency’s Sentinel-2 satellite program, as they also become CARD4L compliant.

As part of its engagement with the CARD4L product family specifications, USGS is working to address specific threshold and target requirements for its global Landsat ARD products, including its general metadata, per-pixel metadata, radiometric and atmospheric corrections, and geometric corrections. A USGS EROS calibration/validation working group is performing internal assessments of how the Landsat ARD products comply with each of these CARD4L surface reflectance and surface temperature requirements. These assessments are also intended to provide feedback and inform LSI-VC regarding future CARD4L specification refinements.

Landsat 8 orbits earth

CEOS Future Data Architectures Remains Priority for USGS

Though the USGS’ time as Chair of the Committee on Earth Observation Satellites (CEOS) ended late in 2017, the agency remains fully committed to the CEOS priority of the Future Data Architectures (FDA) initiative. With USGS as the Chair in 2017, the FDA Ad-hoc Team focused its work on a comprehensive CEOS strategy for Analysis Ready Data (ARD), a user metrics activity, and the provision of open source tools to exploit advances in technology and meet user demand. For the last three years, CEOS’ strategy has been to achieve de-risking and simplification of Earth Observation (EO) data for users, and to allow those users to make use of all available and relevant CEOS agency data.

USGS’ commitment to FDA includes involvement in the CEOS Working Group on Information Systems and Services (WGISS). WGISS promotes collaboration in the development of systems and services that manage EO data. WGISS creates and demonstrates prototypes that support CEOS and Group on Earth Observation (GEO) requirements. WGISS also addresses the internal management of EO data, the creation of information systems, and the delivery of interoperable services.

USGS is equally invested in the Land Surface Imaging Virtual Constellation (LSI-VC), which leads the CEOS Analysis Ready Data for Land (CARD4L) initiative. As part of its role in LSI-VC, USGS has helped to formulate the overarching Definition of CARD4L, the individual surface reflectance and surface temperature Product Family Specifications, and has assisted with the Assessment Process and outreach, advocacy, and promotion.

End User Services

Strategic Implementation Team Technical Workshop, 32nd CEOS Plenary Coming Up

USGS representatives will be participating in several important Committee on Earth Observation Satellites (CEOS) meetings in late summer and early fall 2018.

The CEOS 2018 Strategic Implementation Team (SIT) Technical Workshop is Sept. 11–14 in Darmstadt, Germany. That workshop will address preparations for the 32nd CEOS Plenary in October 2018. It will also focus on Virtual Constellations and Working Groups continuity, sustainability, and outputs. And it will look at the continuing development of CEOS relationships with the Coordination Group for Meteorological Satellites (CGMS), the Group on Earth Observations (GEO), and the World Meteorological Organization (WMO).

On Oct. 16–18, USGS staff will be in Brussels, Belgium for the 32nd CEOS Plenary. That event will address all of the major themes and activities carried out by CEOS and its constituent groups over the course of the year, with a focus on the priorities of the 2018 CEOS Chair. Those priorities included the continuation and initial implementation of the future data access and analysis architectures work, CEOS strategic partnerships, and the foundation of an international effort on a carbon dioxide and greenhouse gas monitoring system.

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