1. Supplemental Data: Climatology, variability and trends in United States vapor pressure deficit, an important fire-related meteorological quantity Seager, Richard; Hooks, Allison; Williams, A. Park; Cook, Benjamin I.; Nakamura, Jennifer A.; Henderson, Naomi L. 2015 Data (Information) Forest firesClimatic changesWater vapor, AtmosphericMeteorologyAtmosphere