Los Angeles pollution levels over last 20 years (IMAGE)

University of California - Berkeley

Los Angeles pollution levels over last 20 years

Caption

In 2018, organic aerosols made up about 23% of the aerosol pollutants in Los Angeles (blue on pie chart), a large portion of which is due to chemicals emitted by plants. The right chart shows how aerosol concentrations in LA have declined over time, leveling out around 2012.

Credit

UC Berkeley graphics by Clara Nussbaumer and Ronald Cohen

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