Geoscience Data Exchange (GDEX)Serves as a repository for open-access datasets funded by, or of relevance to, the National Science Foundation (NSF) Geosciences Directorate. It is a community resource enabling data providers to comply with federal and publisher Open Data mandates and to meet FAIR Guiding Principles for Findable, Accessible, Interoperable and Reusable data. A Trusted Data Repository certification application has been submitted. Capacity limits are greater than existing general-purpose repositories; both small- and large-volume datasets (tens or even hundreds of terabytes) may be accepted.
Current GDEX holdings include datasets from all NCAR Labs as well as from the Index of Chamber Atmospheric Research in the US (ICARUS); GDEX has also been designated as the repository for data from NSF Community Instrument Facilities and the Atmospheric Science and Chemistry mEasurement NeTwork (ASCENT). Other data providers can name NCAR as a collaborator on the data management portion of grant proposals, or use the standardized System Use Rate now pending NSF approval. There are costs for data storage that are substantially less than that for commercial cloud services, with zero egress charges, and there is cost recovery for data ingest processing depending on the volume, complexity, and heterogeneity of the data.NCAR launched the Geoscience Data Exchange (GDEX) in January 2022 to address the increasing demand for archival repository space for Earth system science data. The project – an expansion and rebranding of the former DASH Repository – is a response to the need to provide open access as required by federal policy, funding agencies, and scientific publishers, and to support scientific reproducibility and secondary use of data for new research.GDEX is designed to support NCAR projects and also external, NSF-funded projects such as Community Instruments and Facilities (CIFs), the Index of Chamber Atmospheric Research in the United States (ICARUS), and other geoscience data collections that require data archiving, preservation, and open access.