---
- attributes: ~
  caption: "Climate change will alter (black bold text) chemical and physical interactions that create, remove, and transport air pollution (red text and gray arrows). Human activities and natural processes release precursors for ground-level ozone (O<sub>3</sub>) and particulate matter with a diameter less than 2.5 micrometers (PM<sub>2.5</sub>), including methane (CH<sub>4</sub>), carbon monoxide (CO), nitrogen oxides (NO<sub>x</sub>), non-methane volatile organic compounds (NMVOCs), sulfur dioxide (SO<sub>2</sub>), ammonia (NH<sub>3</sub>), organic carbon (OC), black carbon (BC), and dimethyl sulfide (DMS); and direct atmospheric pollutants, including mineral dust, sea salt, pollen, spores, and food particles. Source: adapted from Fiore et al. 2015.{{< tbib '4' 'b4038a28-b14b-4ae8-b783-0de19e3cffdd' >}} Reprinted by permission of the publisher (Taylor &amp; Francis Ltd., http://www.tandfonline.com)."
  chapter_identifier: air-quality
  create_dt: 2017-05-31T19:01:50
  href: https://data.globalchange.gov/report/nca4/chapter/air-quality/figure/airquality_climate_v05302017.yaml
  identifier: airquality_climate_v05302017
  lat_max: ~
  lat_min: ~
  lon_max: ~
  lon_min: ~
  ordinal: 1
  report_identifier: nca4
  source_citation: ~
  submission_dt: 2018-11-23T14:45:16
  time_end: ~
  time_start: ~
  title: Pathways by Which Climate Change Will Influence Air Pollution
  uri: /report/nca4/chapter/air-quality/figure/airquality_climate_v05302017
  url: ~
  usage_limits: Figure may be copyright protected and permission may be required. Contact original figure source for information
- attributes: ~
  caption: "The maps show the change in summer averages of the maximum daily 8-hour ozone concentration. Summertime ozone is projected to change non-uniformly across the United States based on multiyear simulations from the Community Multiscale Air Quality (CMAQ) modeling system. Those changes are amplified under the higher scenario (RCP8.5) compared with the lower scenario (RCP4.5), as well as at 2090 compared with 2050. Source: adapted from EPA 2017.{{< tbib '1' '0b30f1ab-e4c4-4837-aa8b-0e19faccdb94' >}}"
  chapter_identifier: air-quality
  create_dt: 2017-05-31T19:10:21
  href: https://data.globalchange.gov/report/nca4/chapter/air-quality/figure/ozone.yaml
  identifier: ozone
  lat_max: ~
  lat_min: ~
  lon_max: ~
  lon_min: ~
  ordinal: 2
  report_identifier: nca4
  source_citation: ~
  submission_dt: 2018-11-23T14:45:25
  time_end: ~
  time_start: ~
  title: Projected Changes in Summer Season Ozone
  uri: /report/nca4/chapter/air-quality/figure/ozone
  url: ~
  usage_limits: Figure may be copyright protected and permission may be required. Contact original figure source for information