ALT PML’s Dr Thomas Jordan, Earth Observation Scientist in Ocean Optics, has led a new study resulting in a unique and valuable dataset that combines the optical properties of Atlantic seawater and phytoplankton pigment concentrations. The decadal dataset provides a new resource for scientists to ground-truth data from existing ocean color satellite sensors that detect markers such as the chlorophyll pigment found in phytoplankton. The dataset can also be used to develop new phytoplankton algorithms for next-generation satellites.   In turn, increased confidence in satellite observations of phytoplankton enables improved monitoring of ocean health and the global carbon cycle, which feeds into climate science.