A dense haze, known locally as Calima, blanketed Spain’s Canary Islands on 17 December 2024 following Storm Dorothea. Strong winds carried suspended dust from the Sahara Desert, significantly impacting air quality and visibility, particularly on Lanzarote and Fuerteventura.

Satellite Image of Canary Islands
Canary Islands, Spain. Credit: European Union, Copernicus Sentinel-2 imagery

According to data, the daily concentration of particulate matter in these areas surpassed levels recommended by the World Health Organization, raising health concerns for local communities. The phenomenon, visible in this Copernicus Sentinel-2 satellite image, shows the recurring challenges posed by transcontinental dust transport.

The Copernicus Atmosphere Monitoring Service offers crucial daily updates and forecasts on the movement of atmospheric pollutants, providing valuable insights for authorities to protect public health and enhance preparedness.

Featured image credit: European Union, Copernicus Sentinel-2 imagery

Image: This visualisation, based on C3S data, shows surface air temperature anomalies across parts of the Northern Hemisphere
Image of the day: October 2025 stands among the warmest on recordFacts

Image of the day: October 2025 stands among the warmest on record

October 2025 ranked as the third-warmest October ever recorded, continuing a run of exceptional global warmth that has marked recent years. According to the ERA5…
Muser NewsDeskMuser NewsDeskNovember 11, 2025 Full article
Image: Great Barrier Reef
Great Barrier Reef ocean temperatures hit 400-year record: studyNewsScience

Great Barrier Reef ocean temperatures hit 400-year record: study

By Laura CHUNG | AFP Sydney, Australia - For the past decade, water temperatures along Australia's famed Great Barrier Reef have been the warmest in…
SourceSourceAugust 7, 2024 Full article
Satellite image: Ottenby Nature Reserve, Sweden
Image of the day: Snow-covered Ottenby Nature Reserve, a haven for birds and biodiversityNews

Image of the day: Snow-covered Ottenby Nature Reserve, a haven for birds and biodiversity

Located at the southern tip of Öland, Sweden, the Ottenby Nature Reserve stands as a remarkable sanctuary of biodiversity. The reserve, a designated Natura 2000…
Muser NewsDeskMuser NewsDeskDecember 11, 2024 Full article