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Effect of climate change on surface ozone over North America, Europe, and East Asia

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1002/2016GL068060· OSTI ID:1402382
 [1];  [1];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Department of Earth System Science University of California Irvine California USA
  2. GAME/CNRM, Météo‐France, CNRS–Centre National de Recherches Météorologiques Toulouse France
  3. UCAR/NOAA Geophysical Fluid Dynamics Laboratory, National Oceanic and Atmospheric Administration Princeton New Jersey USA
  4. Geophysical Fluid Dynamics Laboratory National Oceanic and Atmospheric Administration Princeton New Jersey USA
  5. National Institute of Water and Atmospheric Research Lauder New Zealand
  6. Nicholas School of the Environment Duke University Durham North Carolina USA
  7. NASA Goddard Institute for Space Studies and Columbia Earth Institute Columbia University New York New York USA
Abstract

The effect of future climate change on surface ozone over North America, Europe, and East Asia is evaluated using present‐day (2000s) and future (2100s) hourly surface ozone simulated by four global models. Future climate follows RCP8.5, while methane and anthropogenic ozone precursors are fixed at year 2000 levels. Climate change shifts the seasonal surface ozone peak to earlier in the year and increases the amplitude of the annual cycle. Increases in mean summertime and high‐percentile ozone are generally found in polluted environments, while decreases are found in clean environments. We propose that climate change augments the efficiency of precursor emissions to generate surface ozone in polluted regions, thus reducing precursor export to neighboring downwind locations. Even with constant biogenic emissions, climate change causes the largest ozone increases at high percentiles. In most cases, air quality extreme episodes become larger and contain higher ozone levels relative to the rest of the distribution.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0007021
OSTI ID:
1402382
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 7 Vol. 43; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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