Earth’s oceans are turning green with a warming climate, but exactly how and why is unclear.

Current satellites don’t have enough sensitivity to color to see subtle shifts in hue. PACE will see the ocean in more color than ever before, helping us discern what’s driving the shift toward greener oceans.

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Video description:
:00 Aerial view of the blue open ocean. In a new view of the ocean, arrows show how the water absorbs light. A diagram shows how phytoplankton, zooplankton, and lager marine life interact in the food web.
:20 Animation of a globe in green, blue, yellow and red, showing the presence of different type of phytoplankton. A circle appears. Inside of it are green phytoplankton, Prochlorococcus.
:30 Phytoplankton, zooplankton, fish, sea lions, sharks, krakens and more appear on screen in succession.
:45 An animation shows blue and green colors on a globe of Earth’s oceans, showing where the ocean is changing hue. Another globe shows green pixels in the ocean labeled “areas with chlorophyll change.”
:55 An animation shows the color detection capabilities of several satellites: NIMBUS-7, SEASTAR, AQUA, TERRA, SUOMI-NPP, and PACE. All of the satellites except PACE have large gaps between the purple, blue, green, red, and other colors they can detect. Next to PACE is a rainbow bar showing the full spectrum of color.
1:05 The video ends on another aerial view of water.