Sand, dust storms affect about 330 million people due to climate change: UN

Nearly half the global population has also been exposed to dust levels exceeding WHO safety thresholds.

A new report by the United Nations’ World Meteorological Organization (WMO) has found that sand and dust storms are leading to “premature deaths” due to climate change, with more than 330 million people in 150 countries affected.

On Saturday, the UN General Assembly (UNGA) marked the International Day of Combating Sand and Dust Storms and its designation of 2025 – 2034 as the UN Decade on Combating Sand and Dust Storms.

The storms “are fast becoming one of the most overlooked yet far-reaching global challenges of our time”, said Assembly President Philemon Yang. “They are driven by climate change, land degradation and unsustainable practices.”

The secretary-general of WMO, Celeste Saulo, said on Thursday that sand and dust storms do not just mean “dirty windows and hazy skies. They harm the health and quality of life of millions of people and cost many millions of dollars through disruption to air and ground transport, on agriculture and on solar energy production.”

Airborne particles from these storms contribute to 7 million premature deaths annually, said Yang, adding that they trigger respiratory and cardiovascular disease, and reduce crop yields by up to 25%, causing hunger and migration.

“About 2 billion tonnes of dust are emitted yearly, equivalent to 300 Great Pyramids of Giza” in Egypt, Laura Paterson, the WMO’s UN representative, told the UNGA.

More than 80% of the world’s dust comes from the deserts in North Africa and the Middle East, added Paterson, but it has a global effect because the particles can travel hundreds and even thousands of kilometres across continents and oceans.

Undersecretary-General Rola Dashti, head of the UN Economic and Social Commission for Western Asia, told the assembly the storms’ economic costs are “staggering”.

Dust from the Sahara Desert in Africa has travelled as far as the Caribbean and Florida, she said. For the United States, dust and wind erosion caused $154bn in damage in 2017, a quadrupling of the amount since 1995, according to a study in the scientific journal Nature.

The WMO and World Health Organization also warned that the health burden is rising sharply, with 3.8 billion people – nearly half the global population – exposed to dust levels exceeding WHO safety thresholds between 2018 and 2022, up from 2.9 billion people affected between 2003 and 2007.