PolyU research reveals rising soil nitrous acid emissions driven by climate change and fertilisation accelerate global ozone pollution (IMAGE)

The Hong Kong Polytechnic University

PolyU research reveals rising soil nitrous acid emissions driven by climate change and fertilisation accelerate global ozone pollution

Caption

a Global annual average soil HONO emissions in 2016, in units of kg N ha-1 yr-1. b Proportions of emissions from different regions. Magenta, blue, orange, purple, green, light blue, brown, and gold sectors indicate proportions of North America, South America, Europe, Africa, India, China, Australia, and the rest of the world (ROW), respectively. c Relative contributions of fertilized and unfertilized soil to the total HONO emissions, with orange and green sectors indicating their respective proportions. d–g Monthly variation of soil HONO emissions in 2016, in units of kg N ha-1 mth-1.

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