Baisse de nébulosité dans plusieurs endroits du monde

Bonjour, le sujet pourrait devenir de plus en plus important en raison du besoin croissant de comprendre les changements climatiques (en plus des gaz à effet de serre)

Plusieurs endroits du monde semblent connaître une baisse de nébulosité comme vu également par les estimations de moyenne continentale d'humidité (cf image ci jointe)

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https://www.sciencedirect.com/science/article/abs/pii/S0169809523000224
"Moreover, the seasonal and annual TCC series are characterized by a significant negative trend over the whole considered period, which is mainly due to the 1951–1990 period"

https://www.sciencedirect.com/science/article/pii/S0169809523002016
"  On the other hand, the CC series presents an increase from 1890 to the 1980s, followed by a decrease up to 2018 (both being statistically significant) "

https://www.preprints.org/manuscript/202306.1668
" All four CDRs continue to agree on the statistically significant decrease in global cloud amount over the last four decades "

https://www.sciencedirect.com/science/article/pii/S2097158323000356
" Generally, average total cloud cover decreased in most of central Asia, and high and medium cloud cover increased while low cloud cover decreased "

https://www.sciencedirect.com/science/article/pii/S0168192322000430
"We report that the total cloudiness has decreased over much of Scandinavia"[