Deying Wang

Abstract Nitrogen dioxide (NO2) is a critical atmospheric pollutant and ozone precursor, yet biogenic soil sources remain poorly constrained. Current models assume soil NO2 flux is exclusively depositional. Here we demonstrate that soils can produce NO2 through microbial superoxide (O2ˉ) production. Using controlled factorial slurry experiments, native microbial communities produced approximately 10 times more NO2 than sterile controls following nitric oxide (NO) exposure.

Abstract Mitigation of anthropogenic emissions can influence mineral dust not only by limiting global warming but also by reshaping regional circulation and hydroclimate. Here, we use fully coupled CESM2.1.3 simulations to compare future African springtime dust under a China-aligned global emissions pathway consistent with the Paris Agreement’s 2 °C target (SSP2-com) and a baseline experiment in which anthropogenic emissions are held at their 2023 levels (Fix2023).

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