The development of a Climate Change Monitoring Network (CCMN) for Hawai’i is a shared goal of a wide variety of Federal, State, and local agencies and other entities charged with understanding and managing natural resources in the State. This CCMN would integrate repeated measurements of geophysical variables (e.g., solar radiation, rainfall, relative humidity, soil moisture, stream flow) and biological variables (e.g., vegetation composition, bird abundance, stream organisms) to provide an enhanced ability to understand ongoing and future changes in Hawai’i. To support this effort, this project developed a series of tools, GIS maps, and plots to visualize the unique and complex climate on the islands of Hawai’i. These outputs help visualize the long-term trends in the distribution of extreme precipitation across the island chain, as well as changes in the occurrences of very hot days and very cold nights. Overall, the number of hot days has increased across the state while the number of cold nights have declined. The existence of the “Climate at a Glance” web tool, available through NCEI, supports 8 long-term stations in Hawai’i that showcases the temperature and precipitation trends since 1900. Moreover, this tool is dynamically updated with data so it will always be current.
