How the Sahara Feeds the Amazon 🏜️

Описание: The Sahara covers about 9.2 million square kilometres: more than all 48 mainland US states put together (about 8.1 million km²). It runs about 4,800 km from the Atlantic to the Red Sea, and some of its dunes rise over 180 metres, taller than the Great Pyramid of Giza was when it was built (146.6 m). Each year its winds carry about 182 million tonnes of dust west off the African coast. Satellites watch it cross the Atlantic, and about 27.7 million tonnes settle on the Amazon basin, bringing roughly 22,000 tonnes of phosphorus a year, about as much as the rainforest's soils lose to rain and floods (NASA CALIPSO study, Yu et al. 2015).

Sources: NASA, 'NASA Satellite Reveals How Much Saharan Dust Feeds Amazon's Plants' (22 Feb 2015) https://www.nasa.gov/missions/calipso... ; Yu, H. et al. (2015), Geophysical Research Letters, 'The fertilizing role of African dust in the Amazon rainforest' https://doi.org/10.1002/2015GL063040 ; Encyclopaedia Britannica, 'Sahara' https://www.britannica.com/place/Saha... ; Wikipedia, 'Sahara' https://en.wikipedia.org/wiki/Sahara ; US Census Bureau, 2010 State Area Measurements https://www.census.gov/geographies/re... ; Britannica, 'Pyramids of Giza' https://www.britannica.com/topic/Pyra... .

Footage: Pexels (free licence): camel ride by Kristen Haennel https://www.pexels.com/video/30783918/ ; camel caravan by Ahmed Mutecevvil https://www.pexels.com/video/34535416/ ; dune hiker by Nirjhar Basak https://www.pexels.com/video/36259622/ ; rainforest river aerial "Stunning Aerial View of Lush Amazon River" https://www.pexels.com/video/35527397/ . Satellite time-lapse: 'Saharan dust over the Atlantic Ocean' by Marc Horat, compiled from NOAA GOES-16 images (CIRA archive), CC BY 3.0 https://creativecommons.org/licenses/... ,    • Saharan dust over the Atlantic Ocean   . The dune and rainforest shots are representative footage. Clips are cropped for vertical. Narration is a synthetic voice over real, unaltered footage (no AI visuals).

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