Sea Surface Temperature (SST) is vital to coastal and marine spatial planning, global weather prediction, climate change studies, search and rescue, and ecosystem based management. SST is derived from measurements taken by numerous satellites carrying infrared and microwave radiometers, and is measured by moored buoys, drifting buoys, and ships. This project focuses on completing research to improve the quality of the satellite SSTs from existing and new sensors, producing multi-sensor blended gap-free SSTs from US and international datasets, and successfully broadening the use of these products within specifically targeted coastal applications and the Integrated Ocean Observing System (IOOS).