ESA Observing the Earth

Soil sealing might not be a term that everyone's familiar with, but its effects are felt far and wide, particularly in urban areas.

Recognising the urgencies of addressing soil sealing and its associated challenges, an ESA-funded project, Ulysses, is offering insights into the extent and severity of soil sealing to mitigate soil degradation in the Mediterranean region.

On this Earth Day, we reflect on the importance of protecting our planet for future generations. Understanding the Earth system and the complex interactions that shape our planet is paramount for addressing environmental challenges, mitigating climate change, preparing for natural disasters, managing resources sustainably and conserving biodiversity.

Each component of the Earth system – from the atmosphere and oceans to land surfaces and ice sheets – influences and interacts with one another in complex ways. ESA works all-year round to provide satellite data to monitor the health of our planet. Here are 10 examples of how Earth’s systems intertwine and how satellite measurements are key to understanding these complex processes.

Destination Earth goes live

Watch the event broadcast live from Finland on 10 June

Celebrating the outstanding efforts of scientists and researchers who have advanced the innovative application of Earth observation data, ESA proudly announces the recipient of this year's esteemed Excellence Award. Dr Iestyn Woolway, from Bangor University in the UK, wins the 2024 Earth Observation Excellence Award.

Φsat-2, ESA’s groundbreaking cubesat scheduled for launch in June, will now include two new AI-driven apps destined to demonstrate a crucial role in future environmental monitoring from space. The apps, which focus on marine pollution and wildfires, were the winning entries in ESA’s OrbitalAI Challenge.

As humans exert greater pressure on natural processes, understanding the intricate workings of our Earth system is increasingly vital for effective action on mitigation and adaption strategies. ESA’s Earth Explorer missions yield a wealth of astonishing findings, serving as the bedrock of scientific research in this field. Now, four new concepts have been selected to undergo assessment study, one of which is destined to be the twelfth in this family of world-leading satellite missions.

A total solar eclipse swept across North America yesterday, blocking out the Sun momentarily with parts of the continent plunged into darkness. Geostationary satellites orbiting 36 000 km away captured images of the rare celestial event. 

These images, captured by the Geostationary Operational Environmental Satellite (GOES-16), captured the moon’s shadow moving across North America from approximately 16:00 to 23:00 CEST (15:00 to 22:00 BST.)

A total solar eclipse occurs when the Moon passes between the Sun and Earth and, for a short period, blocks the face of the Sun, save for a visible ring of light, known as the Sun’s corona. 

The track of the moon’s shadow across Earth’s surface, called the path of totality, spanned across the North American continent – from Mexico to the very eastern tip of Canada.

The GOES series is a collaborative development and acquisition effort between National Oceanic and Atmospheric Administration (NOAA) and NASA. The GOES-16 (GOES-East) satellite, the first of the series, provides continuous imagery and atmospheric measurements of Earth's western hemisphere and monitors space weather.

The Copernicus Sentinel-3 mission also captured images of the eclipse with its Sea and Land Surface Temperature Radiometer (SLSTR).

The eclipse also acts as a laboratory for researching what happens to weather when the Moon’s shadow passes over. The shadow makes air temperatures drop and can cause clouds to evolve in different ways. Data from GOES, Sentinel-3 and other satellites are now being used to explore these effects.

Call for media: Last chance to see Arctic Weather Satellite

Air pollution is the largest environmental health risk in Europe and significantly impacts the health of the European population, particularly in urban areas.

Following on from the Sentinel-5P satellite – the first Copernicus mission dedicated to monitoring our atmosphere – the Sentinel-4 and Sentinel-5 missions will take current air quality measuring capabilities to the next level.

Together, the Sentinel-4 and -5 missions will provide information on atmospheric variables in support of European policies. This will include the monitoring of air quality, stratospheric ozone and solar radiation, and climate monitoring.

This video features interviews with Giorgio Bagnasco, Sentinel-4 Mission Project Manager, Ben Veilhelmann, Sentinel-4&5 Mission Scientist and Didier Martin, Sentinel-5 Mission Project Manager.

Access all "Unpacking Sentinels" videos.

Climate change exacerbates droughts by making them more frequent, longer, and more severe. This can have a wide range of impacts on the environment, agriculture, ecosystems and communities including water scarcity, crop failure and food shortages.

The upcoming Copernicus Land Surface Temperature Monitoring, LSTM, mission will improve sustainable agricultural productivity in a world of increasing water scarcity and variability.

The mission will carry a high spatial-temporal resolution thermal infrared sensor to provide observations of land-surface temperature.

These data are key to understand and respond to climate variability, manage water resources for agricultural production, predict droughts and also to address land degradation.

LSTM is one of six Copernicus Sentinel Expansion missions that ESA is developing on behalf of the EU. The missions will expand the current capabilities of the Copernicus Space Component – the world’s biggest supplier of Earth observation data.

This video features interviews with Ana Bolea Alamanac, LSTM Mission Project Manager, Ilias Manolis, LSTM Mission Payload Manager and Itziar Barat, LSTM Mission System and Operations Manager.

Access all "Unpacking Sentinels" videos.