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  • Denis Pepin

Diving Deep: Understanding Our Oceans and Climate with PACE

Updated: Apr 1

A satellite with solar panels orbits Earth, which is partly covered by clouds and ocean waves. The sun shines brightly from the left corner.
A New Dawn for Earth Observation: The PACE Mission’s satellite orbits our blue planet, capturing the dance of plankton, aerosols, and clouds amidst the radiant sun and tumultuous seas.

The health of our oceans and atmosphere are intricately linked, playing a vital role in regulating Earth's climate. To better understand this complex relationship, NASA launched the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission on February 8, 2024. This groundbreaking satellite mission promises to revolutionize our understanding of how the ocean and atmosphere interact, impacting both climate and marine ecosystems.

The PACE Mission:

Imagine a satellite peering deep into the heart of our planet, collecting vital data from both the vast seas and the dynamic atmosphere. That's exactly what PACE does. Equipped with three sophisticated instruments, PACE observes:

  • Ocean Color: By measuring reflected sunlight, PACE detects subtle variations in ocean color, revealing the presence and abundance of phytoplankton, dissolved organic matter, and sediments.

  • Aerosols and Clouds: Using special light-measuring devices called polarimeters, PACE analyzes the properties and distribution of tiny particles suspended in the air, known as aerosols, and the ever-changing formations of clouds, understanding their impact on radiation and climate.

Why is PACE Important?

PACE addresses crucial questions about our planet:

  • Carbon Cycle: How efficiently does the ocean absorb and release carbon dioxide, a major greenhouse gas? PACE helps quantify this vital process, understanding its role in climate change.

  • Air Quality: What are the key atmospheric variables influencing air quality? PACE provides critical data for managing air pollution and protecting human health.

  • Ocean Health: How are phytoplankton communities changing and what does it mean for the marine ecosystem? PACE monitors the health of our oceans, the foundation of life on Earth.

Benefits for Science, Society, and the Economy:

The wealth of data collected by PACE has far-reaching benefits:

  • Science: PACE extends NASA's long-term observations, enabling groundbreaking discoveries about Earth's systems.

  • Society: Informed decision-making on climate change, air quality, water management, and coastal protection becomes possible.

  • Economy: PACE fosters innovation in sectors like renewable energy, environmental engineering, and sustainable tourism.


The PACE mission is a powerful step towards a deeper understanding of Earth's systems. By studying the ocean's pulse and the atmosphere's breath, PACE helps us chart a course towards a healthier planet for all. Its data will be a valuable resource for generations to come, guiding informed decision-making and paving the way for a more sustainable future.





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