Zack Guido is the program manager and research scientist for the University of Arizona’s International Research and Applications Program (IRAP) and research affiliate at the Climate Assessment for the Southwest (CLIMAS). Guido research interests include quantifying climate impacts on water resources (including glaciers), co-producing end-to-end climate services, and advancing climate risk management through participatory processes. At CLIMAS, Guido led climate communication efforts that improved access to, use of, and understanding of climate information, including the monthly e-publication, The Southwest Climate Outlook. Guido has also conducted research to advance climate adaptation planning with Arizona municipalities and worked with Federal emergency managers to develop tailored climate information. In these efforts, Guido employs frameworks for the co-production of science in order to make climate information more credible, relevant, and useful. Guido has extensive international research and practice experience. A three-year Peace Corps stint in Bolivia between 2000 and 2003 subsequently paved the way for him to co-found a 501(c)3 non-profit organization to work with rural Bolivians to make their water resources more resilient to shortfalls from drought and retreating glaciers. Guido has also worked as a hydrogeologist consultant, developing water resources in the hyper-arid Atacama Desert in Chile.