世界气象组织：2024年世界气象组织空中尘埃公告（英文版）

The global average of annual mean surface dust concentrations in 2023 (12.7 µg m–3, see Figure 1(a)) was slightly lower than that in 2022 (13.8 µg m–3, see WMO Airborne Dust Bulletin, No. 7). This decrease in 2023 is mainly attributed to reduced dust emissions from several dust-active regions around the world, such as North Africa, the Arabian Peninsula, the Iranian Plateau, northern India, central Australia and north-western China. But annual mean surface dust concentrations over western Cen