Feb 12 • 20:30 UTC 🇧🇷 Brazil Folha (PT)

Climate changes also affect satellites

Climate change impacts even satellites orbiting Earth by affecting the upper layers of the atmosphere where they operate.

When discussing climate change, most people think of visible effects like heat waves, floods, or melting glaciers. However, these environmental shifts also extend to the impact on satellites, the man-made devices that orbit our planet and help with essential services such as GPS navigation, telecommunications, weather forecasting, and climate studies. These satellites operate primarily in a region known as low Earth orbit, located within the upper layers of the atmosphere, where they are subject to friction from the thin air present there.

As satellites travel through the atmosphere, even a minute amount of air creates drag that gradually depletes their energy, ultimately causing them to re-enter Earth’s atmosphere and safely disintegrate. While this process helps to manage space debris, it has become a concern as climate change brings about cooler temperatures in these upper atmospheric layers. This cooling leads to denser air, which increases friction against these satellites, hastening their degradation and descent. Thus, the implications of climate change reach far beyond terrestrial impacts, potentially threatening the reliability of satellite systems that society heavily depends on.

The interaction between climate change and satellite technology highlights the interconnectedness of our environment and technological systems. As temperatures in the upper atmosphere continue to drop due to global warming and other atmospheric changes, stakeholders—including researchers, engineers, and policymakers—must recognize these effects to ensure the robustness and sustainability of satellite operations. This situation serves as a reminder of the broader significance of climate change's impact, spanning beyond immediate local issues to include vital global networks reliant on satellite technology.

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