Global ocean colour trends in biogeochemical provinces

Satellite-derived ocean colour data provide continuous, daily measurements of global waters and are an essential tool for monitoring these in a changing climate. Merging observations from different satellite sensors is necessary long-term continuous climate research because the lifetime limited. A key issue deriving trends merged inconsistency between spatiotemporal coverage sensor datasets that can lead to spurious multi-year fluctuations or time series. This study used dataset produced by Ocean Colour Climate Change Initiative (OC-CCI version 6.0) infer local optically active constituents. We applied novel correction method OC-CCI results spatiotemporally consistent dataset, allowing examination constituents with greater accuracy. included sea surface temperature, salinity, several oscillations our analysis gain insight into underlying processes derived trends. Our indicate significant increase chlorophyll -a concentration polar waters, decrease chlorophyll- some equatorial point darkening, predominantly due non-phytoplankton absorption. contributes broader knowledge their relation environment.