Growing aridity poses threats to global land surface
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Miralles, Albert (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Tariq, Akash (Chinese Academy of Sciences. Xinjiang Institute of Ecology and Geography)
Zeng, Fanjiang (Chinese Academy of Sciences. Xinjiang Institute of Ecology and Geography)
Wang, Rong (Fudan University. Department of Environmental Science and Engineering)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)

Data:	2024
Resum:	Global warming has impacted water cycle, but not exist a global study of the changes at global scale of the impacts on water available for plants. Here, cloud-optimized monthly aggregated climate reanalysis from the European Centre for Medium-Range Weather Forecasts dataset indicates that from 1960 to 2023, 27. 9% of the global land surface became significantly more arid, while 20. 5% became significantly less arid. This indicates a shift towards drier climates, with humid, semi-humid, andsemi-arid areas decreasing by 8. 51, 1. 45, and 0. 53 million-km², respectively, and arid and hyperarid areas increasing by 6. 34 and 4. 18million-km², respectively. This total increase of 9. 99 million km² in arid areas represents 5. 9% of the global land surface, excluding Greenland and Antarctica. Accelerated aridification has occurred in already dry regions, such as South-west North-America, North-Brazil, the European-Basin, North-Africa, the Middle-East, the Sahel, and central-Asia, with central-Africa as a new hotspot. The main driver is the disproportionate increase in potential evapotranspiration relative to rainfall, attributed to rising atmospheric temperatures, which also reduces the land's carbon sink capacity, potentially exacerbating climate warming.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Communications earth & environment, Vol. 5 (December 2024) , art. 776, ISSN 2662-4435

DOI: 10.1038/s43247-024-01935-1

8 p, 1.3 MB

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