This Solicitation supports two funding opportunities to advance geosciences research: 1) Science-Enabling Capabilities and Pilots: This opportunity builds capabilities to improve geosciences data use and reuse for observational, experimental, and computational research that is interoperable with emerging standards and resources. It also solicits pilot efforts to integrate different datasets and tools from multiple GEO disciplines. 2) EarthCube Research Coordination Networks (RCNs): This opportunity supports the formation of RCNs closely tied to the science and data needs of core geosciences programs and domains supported by GEO. In addition to these solicited opportunities, the EarthCube program will accept requests for supplements to support adoption of emerging EarthCube open web standards and existing cyberinfrastructure by science projects and data resources. Supplements must abide by the guidelines for supplements in the PAPPG. Prospective PIs should contact an EarthCube program director to discuss a potential supplement. The EarthCube program will accept requests for supplements of the following types: 1) Science adoption: Target broadening or enhancing existing geoscience projects to achieve new research and education outcomes through adoption of existing data and software tools (including, but not limited to, products from EarthCube projects). Possible projects include the adoption of data standards to support the science goals of a project. 2) Data resource adoption: Support data facilities and data resources to adopt robust standards and/or implementation of pilot tools/activities to improve discovery, interoperability and access to data and cyberinfrastructure services. In conjunction with EarthCube/Council of Data Facilities developments, these awards would facilitate adoption of new semantic web standards and machine-readable publishing patterns, such as for the EarthCube data repository and resource registries. These awards are meant for an initial implementation of these standards and are not meant to sustain existing core functions of data facilities. Full proposal deadline: March 12, 2020.