Digital data sets are central to scientific research in all geo-science disciplines. Research data sets vary in their volumes, formats, and uses. UCAR and NCAR scientists collect, manage, and use research data for many purposes. To help meet UCAR/NCAR research data challenges and needs, the NCAR Library is developing research data services. This page provides links to research data resources within UCAR/NCAR, discipline-specific data archives outside of NCAR, and information guides on a few data-related topics.