Science10 min read
Why the Ocean Changes Colour: Chlorophyll From Space
Why the sea turns green, turquoise or milky — and how ocean-colour satellites read chlorophyll from orbit to map blooms, currents and ocean life.
Dr. Mara Ellison ·
#ocean-colour
4 articles
Science8 min read
Ocean Colour from Space: How Satellites Read the Sea
Ocean colour satellites turn faint light reflected from the sea into maps of phytoplankton, sediment and kelp. How the sensors work, what they see — and what they miss.
Dr. Mara Ellison ·
Science11 min read
Hyperspectral Eyes on the Ocean: Seeing Kelp in a Hundred Colours
Hyperspectral sensors split light into hundreds of bands, separating kelp species, plankton groups and sediment that multispectral satellites blur together. Here's how.
Dr. Mara Ellison ·
Science11 min read
How Satellites See Kelp: Remote Sensing of Coastal Canopies
From Sentinel-2 pixels to drone orthomosaics, here's how scientists detect, map and track kelp forest canopies from space — and where the limits are.
Dr. Mara Ellison ·