English: In the final week of February 2021, many European countries have recorded temperatures more than 12°C above historical average for this time period. On 24 February, record temperatures for February were measured in Germany, where Hamburg exceeded 20°C for the first time, and Berlin logged a high of 19.7°C. It was also unusually warm in Austria, with highs of up to 23°C. Bilje set a new national monthly record in Slovenia with 25.3°C, and Croatia reported a record high of 26.4°C in Knin. Records were also broken in France, with 22.7°C in Colmar and 21.5°C in Pontarlier, and Italy was not far behind with peaks of up to 24–25°C in several central-northern locations. These two images have been obtained using data retrieved by the Copernicus Sentinel-3 mission on 24 February 2021 ; they show a cloud-free view (left) and the land surface temperature (right) in central Europe. The complete absence of clouds allowed for a detailed look that, already at 9:44 UTC, revealed that the land surface temperature in large parts of Italy, Slovenia and Croatia was above 20°C, while it reached between 17°C and 20°C in France and Germany. The main objective of the Copernicus Sentinel-3 mission is to measure sea surface topography using the SRAL instrument, sea and land surface temperature using the SLSTR instrument, and ocean and land surface colour using the OLCI instrument. These three instruments aboard the two Copernicus Sentinel-3 satellite allow for accurate and reliable measurements that support ocean, environmental and climate monitoring.