Building Coastal and Climate Resilience & Improving Equitable Service Delivery in the Central and Northern California Ocean Observing System

California coastal communities are poorly prepared for changing coastal conditions and the impacts of climate change, with related issues being particularly acute for underserved, overburdened, and frontline communities. Rising seas, colliding with more frequent and extreme storms, are drowning beaches, eroding bluffs, flooding homes and businesses, and damaging roads and other essential public infrastructure. Since its establishment in 2004, CeNCOOS has built a foundational observing system based on the best available science and collaborative partnerships. CeNCOOS provides near continuous coverage of coastal climate conditions from 34 high-frequency radar (HFR) stations, oceanographic section data from three continuous glider line transects, more than 15 automated shore stations and moorings, and integration with >250 other data products (i.e. data layers) in the California Ocean Observing Systems Data Portal (caloos.org) including from CDIP, NDBC, CalCOFI, Trinidad Head Line, and other NOAA-support observing programs. Now, with opportunities made possible through the Bipartisan Infrastructure Law (BIL) and Inflation Reduction Act (IRA), CeNCOOS has embarked on a new, integrated approach for improved coastal and climate resilience, as well as equitable service delivery. This work is designed to maximize the impact of the CeNCOOS core and Marine Biodiversity Observation Network (MBON) programs, Ocean Vision AI (OVAI), the Synchro tech testbed initiative, and state-funded initiatives to improve the availability of ocean acidification, hypoxia, and harmful algal bloom information to expand capabilities to measure, predict, and respond to extreme events. This includes DMAC upgrades to address place-based management needs (including for offshore wind) and climate and coastal resilience decision-support products.