Schematic diagram displaying the potential effects of climate-driven shifts in basin-scale atmospheric pressure gradients leading to the observed interannual variability in mixed-layer inorganic P concentration at Station ALOHA (red, Pi enhancemen... Schematic diagram displaying the potential effects of climate-driven shifts in basin-scale atmospheric pressure gradients leading to the observed interannual variability in mixed-layer inorganic P concentration at Station ALOHA (red, Pi enhancement; blue, Pi depletion; SPM, suspended particulate matter). Ricardo M. Letelier et al. PNAS 2019;116:26:12720-12728 ©2019 by National Academy of Sciences