The Amundsen Sea, in West Antarctica, is one of the most biologically productive regions in the Southern Ocean. A fast-moving coastal current in this area plays a key role by supporting high levels of phytoplankton growth (net primary production, or NPP) and supplying nutrients to nearby waters. Until recently, satellite data couldn’t capture NPP in the coastal current because bright reflections from nearby ice shelves interfered with chlorophyll measurements near the coast. New satellite products—especially the OC-CCI merged chlorophyll dataset, which combines data from several sensors—have improved this by correcting for atmospheric effects, making it possible to accurately estimate NPP right up to the coastline. As part of the ARTEMIS project, we’ve compiled about 25 years of satellite-based NPP data to study how productivity varies from year to year and how it responds to long-term changes in climate. We compare different chlorophyll datasets to see how better coastal measurements affect NPP estimates. We also explore how ocean currents, wind patterns, and sea ice cover influence NPP in the coastal current and the Amundsen and Pine Island polynyas.