Understanding the intricate interactions between the world’s oceans and the atmosphere just took a giant leap forward with the launch of the PACE satellite. Covering nearly two-thirds of the Earth’s surface, the oceans are vital in absorbing and storing vast amounts of carbon dioxide. The plankton within — a key producer of half the planet’s oxygen — is a major player in this complex system.
Despite their significance, the exact number of plankton species, along with the most productive or vulnerable regions, is not fully known. With the PACE mission, short for Plankton, Aerosol, Clouds, and Ecosystem, this is about to change. Newly developed onboard instruments are poised to scan the smallest spectral ranges of light.
A breakthrough improvement from previous capabilities, PACE can analyze 200 different sections of the light spectrum, enabling a detailed observation of various marine flora species. This in-depth analysis promotes a better understanding of their distribution and lifestyle, facilitating critical conservation efforts.
PACE’s nearly $1 billion worth of instruments include two advanced polarimeters. These instruments measure the polarization of light particles, which reveal aerosols’ presence by detecting the polarized light they reflect, as opposed to the sun’s chaotic, unpolarized light.
Aerosols, these tiny suspended particles, are a fundamental component in cloud formation, affecting climate by blocking about 90 percent of solar radiation from reaching the Earth’s surface. PACE’s contribution goes well beyond static imagery; the satellite can scan the entire Earth in just two days. The compiled data results in a dynamic portrayal of the movements of our planet’s aerosols, clouds, and plankton.
The scientific community is on the edge of their seats, awaiting new insights PACE will provide on ocean protection, its role in climate dynamics, and the behavior of clouds that envelope the globe.
The PACE mission is set to soar aboard a Falcon 9 rocket, with a launch scheduled for February 7, 2024. For those interested in following the intricacies of this pivotal mission, NASA’s official blog provides regular updates and insights.
The anticipation is high for what discoveries the PACE satellite will uncover once operational in Earth’s orbit, enhancing our battle for a sustainable future.
