23/12/2024
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This year has seen remarkable advancements in Earth observation, highlighting transformations ranging from dramatic volcanic eruptions to Saharan dust movements and meteor impacts. Let’s explore some of 2024’s most significant milestones.
ERS-2’s Fiery Departure
ESA’s European Remote Sensing 2 satellite, ERS-2, concluded its nearly 30-year mission with a fiery re-entry into Earth’s atmosphere in February 1995.
Launched in April 1995, ERS-2 was a cornerstone in Earth observation, providing critical data on land surfaces, ocean temperatures, ozone levels, and polar ice extent. Its data remains invaluable today through ESA’s Heritage Space Programme.
Total Solar Eclipse
In April, a total solar eclipse crossed North America, momentarily darkening parts of the continent. Geostationary satellites captured stunning images of the event from 36,000 km above.
The Geostationary Operational Environmental Satellite (GOES-16) documented the Moon’s shadow as it moved across North America. This celestial event occurs when the Moon passes between the Sun and Earth, temporarily obscuring the Sun’s face, revealing only the corona.
The path of totality extended from Mexico to Canada’s eastern tip, showcasing the rare alignment of celestial bodies.
EarthCARE: Unveiling Cloud Secrets
ESA launched EarthCARE, or Earth Cloud, Aerosol and Radiation Explorer, in May 2024, setting a new chapter in climate research.
Equipped with a cloud profiling radar, atmospheric lidar, broadband radiometer, and multispectral imager, EarthCARE measures various atmospheric phenomena simultaneously. These measurements help scientists understand how clouds and aerosols affect Earth’s energy balance and predict future climate changes.
Arctic Weather Satellite Enhances Polar Forecasts
In August, ESA launched the Arctic Weather Satellite (AWS), improving polar weather forecasting with advanced sensors monitoring temperature, humidity, and atmospheres.
Just a month after launch, AWS captured its first images of Storm Boris, which caused significant damage in central Europe. Its brightness temperature measurements illustrated the rain’s impact vividly.
Φsat-2: Advanced AI for Earth Observations
Deployed alongside AWS, Φsat-2 (PhiSat-2) is an innovative cubesat demonstrating AI’s potential in Earth observation.
Equipped with a multispectral camera and AI computer, Φsat-2 processes images in orbit, aiding disaster response, maritime monitoring, environmental protection, and more.
Sentinel-2C: Global Land Surveillance
September marked the launch of Copernicus Sentinel-2C, capturing high-resolution images of Earth’s land, islands, and waters from 786 km.
Soon after launch, Sentinel-2C provided detailed initial images of various global locations. Additionally, the satellite captured a unique image of the Moon, rotating sideways to achieve the shot.
Satellites Monitor Valencia Flood Disaster
In November, torrential rains caused devastating flash floods in southern and eastern Spain, including Valencia.
Earth observation imagery and data were crucial in monitoring and responding to the disaster. Optical images showed the extent of damage, while radar data detailed flood severity.
The Spanish Civil Protection Agency activated the International Charter ‘Space and Major Disasters,’ coordinating with 17 space agencies for disaster analysis.
Sentinel-1C Launch: Continuous Earth Monitoring
December welcomed the launch of Sentinel-1C, enhancing Earth observation capabilities. This radar imaging satellite monitors surfaces in all weather conditions, tracking ice, detecting oil spills, and mapping floods.
Less than a week after launch, Sentinel-1C delivered its first radar images over Europe, showcasing the Netherlands, including Amsterdam and Flevoland.
This image echoes the very first SAR image from the ERS mission in 1991, capturing the Flevoland polder and the Ijsselmeer, marking a full circle for ESA.
These 2024 milestones underscore the vital role of satellites in monitoring Earth. From natural disasters to climate research, these observations provide critical insights for the future. Stay informed about Earth’s changing landscapes and the technologies that help us understand them better.
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