Fig. 2: US-Wide and climate region impact analysis.
From: Dynamics of PM2.5 and network activity during extreme pollution events
a Time series of daily median PM2.5 values in the US (black line), network total degree (purple line), and baseline levels of PM2.5 (dashed line). The inset shows percentage changes in the yearly average total degree. b–d Daily networks on representative days illustrating different pollution scenarios: September 25, 2019 (b) under normal conditions with local correlations, June 27, 2020 (c), and August 15, 2021 (d) during extreme pollution events with regional correlations. e Monthly average network degree by US climate region over 3 years. f–h Rescaled U.S. climate regions for September 2019, June 2020, and August 2021 according to the average network degrees. National mean (μ) and standard deviation (σ) are provided.
