Researchers from the Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, analyzed hourly dust emissions during 136 large dust events across Central East Asia from 2000 to 2023 using a state-of-the-art wind erosion model calculation. The results show that Mongolia has become the dominant source of dust emissions in the region, with its contribution increasing from 43% in the early 2000s to 53% in recent years. After two decades of decline, regional dust storm activity has rebounded sharply after 2021 due to stronger winds, vegetation degradation, and soil drying. The study provides new insights into the changes of Central East Asia dust activity and underscores the urgent need for cross-border dust monitoring and early warning systems. The findings were published in Science China Earth Sciences.

Researchers at the University of Southampton and the GFZ Helmholtz Centre for Geosciences, together with colleagues, have proposed a new explanation for a long-standing question in geosciences: Where do the continental remnants on volcanic oceanic islands come from? Geochemical analyses and modelling have revealed the following picture: When continents break apart, a wave of instability is created at a depth of more than a hundred kilometres. This “mantle wave” scrapes material from the underside of the continents along the base, which is then transported sideways into the Earth's mantle beneath the oceans. There, these remnants of continental roots feed volcanic eruptions in the ocean crust over millions of years. Sometimes the material travels more than a thousand kilometres from the continental interiors before it forms oceanic islands.