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Additional warming of just 0.5 C has a huge effect on global aridity

Phys.org/news (SEPTEMBER 17, 2020 )

Titre : Additional warming of just 0.5 C has a huge effect on global aridity

Phys.org/news (SEPTEMBER 17, 2020 )

Présentation
In a new climate modeling study, researchers from the Institute of Industrial Science, The University of Tokyo have revealed major implications for global drought and aridity when limiting warming to 1.5°C rather than 2°C above pre-industrial levels. Drought has serious negative impacts on both human society and the natural world and is generally projected to increase under global climate change. As a result, assessment of the risk of drought under climate change is a critical area of climate research.

The study revealed that 2°C of warming led to more frequent dry years and more severe aridification in most areas of the world compared with 1.5°C, which emphasizes that efforts should be made to limit warming to 1.5°C above pre-industrial levels. This situation could be especially severe in the Mediterranean, western Europe, northern South America, the Sahel region, and southern Africa," says lead author Akira Takeshima. "However, this situation is highly regional. In some parts of the world, like Australia and some of Asia, the opposite situation was simulated, with a wetter climate at 2°C than at 1.5°C."

These findings show the importance of considering the regional impacts of the additional 0.5°C of warming, especially with respect to any future relaxation of the 1.5°C target.

Source  : University of Tokyo

Annonce (Phys.org/news)

Page publiée le 22 juin 2021