The Customized Online Aggregation & Summarization Tool for Environmental Rasters (COASTER) system ( www.COASTERdata.net) was developed by Yellowstone Ecological Research Center (YERC) ( www.yellowstoneresearch.org) in response to the information needs of end-user communities interested in decision-support for natural resource management. The COASTER system currently contains over 10 terabytes of climate data from several sources. These datasets have daily temporal resolutions, spatial resolutions ranging from 1km to 330km, and temporal extents ranging from 30 to 64 years (1948-2011). COASTER datasets are primarily limited to North America, but gridded datasets from other regions can easily be added to the system. Variables within [...]