A review of coarse mineral dust in the Earth system

作者：Adeyemi A. Adebiyi, Jasper F. Kok, Benjamin J. Murray, Claire L. Ryder, Jan-Berend W Stuut, Ralph A. Kahn, Peter Knippertz, Paola Formenti, N. M. Mahowald, Carlos Pérez García‐Pando, Martina Klose, Albert Ansmann, B. H. Samset, Akinori Ito, Yves Balkanski, Claudia Di Biagio, Manolis N. Romanías, Yue Huang, Jun Meng · 发表于：Aeolian Research · 年份：2022 · DOI：10.1016/j.aeolia.2022.100849 · 被引用次数：250 · 研究领域：Atmospheric aerosols and clouds、Atmospheric chemistry and aerosols、Aeolian processes and effects

Mineral dust particles suspended in the atmosphere span more than three orders of magnitude in diameter, from <0.1 µm to more than 100 µm. This wide size range makes dust a unique aerosol species with the ability to interact with many aspects of the Earth system, including radiation, clouds, hydrology, atmospheric chemistry, and biogeochemistry. This review focuses on coarse and super-coarse dust aerosols, which we respectively define as dust particles with a diameter of 2.5–10 µm and 10–62.5 µm. We review several lines of observational evidence indicating that coarse and super-coarse dust particles are transported farther than previously expected and that the abundance of these particles is substantially underestimated in current global models. We synthesize previous studies that used observations, theories, and model simulations to highlight the impacts of coarse and super-coarse dust aerosols on the Earth system, including their effects on dust-radiation interactions, dust-cloud interactions, atmospheric chemistry, and biogeochemistry. Specifically, coarse and super-coarse dust aerosols produce a net positive direct radiative effect (warming) at the top of the atmosphere and can modify temperature and water vapor profiles, influencing the distribution of clouds and precipitation. In addition, coarse and super-coarse dust aerosols contribute a substantial fraction of ice-nucleating particles, especially at temperatures above –23 °C. They also contribute a substantial fracti...