Europe’s autumn foliage, prominently featuring the European beech, showcases a seasonal transformation into golden-bronze hues visible from space, particularly vibrant in Italy and Romania.
Autumn foliage is one of nature’s most breathtaking spectacles, transforming deciduous forests into vibrant mosaics of yellow, orange, and red. This seasonal change occurs as temperatures drop and daylight decreases, prompting trees to stop producing chlorophyll and reveal the pigments that define autumn.
The images below, taken in October 2024, showcase this colorful transformation across regions like the Tuscan-Emilian Apennines in Italy, the borderlands of Greece and North Macedonia, and the southeastern Carpathian Mountains in Romania.
Cooler temperatures and fewer daylight hours have triggered the autumn foliage, which shows up here in shades of brown and red, particularly at higher altitudes. The colors depend on local weather, altitude and orientation of the slopes, and the mix of native tree species.
The mountains stretch in a diagonal direction from the Cento Laghi Park and the Guadine Pradaccio national reserve in the northwest to Monte Cimone in the southeast.
Along the coast, the port city of La Spezia is visible to the north, while moving south, the city of Carrara can be seen stretching into the Apuan Alps. The city is famous for its white or blue-grey marble, called Carrara, mined from quarries in the nearby mountains, which here appear bright white, contrasting with the surrounding lush vegetation.
Credit: Contains modified Copernicus Sentinel data (2024), processed by ESA
From the Baba Mountains and the Pelister National Park in North Macedonia to the Verno/Vitsi mountains in northern Greece, the predominant tree species are the European beech at higher altitudes and oak at mid and lower altitudes. The result of this combination is the stunning mix of brown, red and green hues typical of the autumn season. The intensity of colors varies with altitude.
The densely packed rectangles of urban areas and cultivated land stand out in sharp contrast on the eastern side of the mountains.
Credit: Contains modified Copernicus Sentinel data (2024), processed by ESA
The different shades of green and brown in the image highlight the colors of autumn in the mountains. Local weather, altitude, and orientation of the slopes and the different tree species in these pristine deciduous forests are responsible for the stunning hues typical of the season.
The image encompasses several national parks, including Piatra Craiului, Bucegi, and the Glodeasa national reserve. Partly visible at the top of the image is the Romanian city of Brasov. It is the most important city in the area and one of the largest industrial and cultural centers in the country.
Credit: Contains modified Copernicus Sentinel data (2024), processed by ESA
The specific shades of brown and green visible in these regions depend on several factors, including the type of tree species, local weather conditions, altitude, and the orientation of mountain slopes.
The European beech (Fagus sylvatica) is the most prevalent tree in these areas. As illustrated in the accompanying map, this species’ range stretches from southern Scandinavia to southern Italy, and from Spain to northwestern Türkiye.
The highest probability of European beech being present is highlighted in yellow in the map.
As shown, the beech can be found from southern Scandinavia to southern Italy and from Spain to northwestern Türkiye. The highest probability of it being present is highlighted in yellow. Credit: ESA [Data source: tree Atlas – JRC, de Rigo, D. et al (2016)]
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