In brief
New satellite technology is revealing crucial insights into how these organisms sustain life on Earth.
Humans are living in a plankton world. These minuscule organisms thrive across the oceans, covering nearly three-quarters of the planet and comprising a vital part of Earth's ecosystem. However, a warming climate is unsettling plankton populations and endangering the entire marine food chain that depends on them.NASA recently launched a satellite designed to provide unprecedented views of phytoplankton diversity and distribution. This development promises to enhance scientists' understanding of how climate change is reshaping life in the ocean. “Do you like breathing? Do you like eating? If your answer is yes for either of them, then you care about phytoplankton,” emphasizes Jeremy Werdell, lead scientist for the satellite program named PACE, which stands for “Plankton, Aerosol, Cloud, ocean Ecosystem.”Historically, marine research has relied on ships that captured snapshots of ocean conditions, resulting in limited insights into the continuously evolving marine environments. Satellites have expanded this view but still offer a constrained perspective, akin to looking through tinted glasses. Oceanographer Ivona Cetinic clarifies that the PACE satellite removes this limitation, providing a more comprehensive depiction of the ocean's biological diversity, likening the newfound clarity to “seeing all the flowers of the ocean.” The urgent need for such clarity is underscored as rising temperatures continue to threaten these essential organisms.
