Climate impact on ocean ecosystem based on 25 years of ocean color satellite data

This study will present how climate change impacts ocean ecosystems using NASA’s historical ocean color data (SeaWiFS-MODIS-VIIRS). The general trend analyses of ocean color data for less than three decades are hard to distinguish between natural and anthropogenic changes in multiple climate-forcing impacts. Alternatively, we bring a new approach for extracting the ocean’s primary physical modes for modulating climate variability to the ocean ecosystem, called Ocean Physical Modes projection to Ocean Color data (OPM-OC) analysis. This will show how the multiple climate-forcing components separately contribute to the satellite observable biological properties, such as Chlorophyll-a concentration, Colored Dissolved Organic Matter (CDOM), and Inherent optical properties. Also, applying the OPM-OC to the Apparent Visible Wavelength (AVW) index enables to detection of a more extensive shift of ocean color remote sensing reflectance spectrum in the tropical ocean gyre circulation by global warming.