期刊
GEOPHYSICAL RESEARCH LETTERS
卷 40, 期 13, 页码 3479-3483出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/grl.50650
关键词
carbon dioxide; isoprene; ozone; secondary organic aerosol; land cover change; climate change
资金
- Croucher Fellowship
- NASA
- EPA STAR [R83428601]
- NIH [5R21ES020194]
- NSF [AGS-123-8109]
- NSF Paleo Perspectives on Climate Change
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [1238109, 1103163] Funding Source: National Science Foundation
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [1102880] Funding Source: National Science Foundation
The inhibition of biogenic isoprene emission by elevated CO2 as observed in many plant taxa may significantly alter the sensitivity of air quality to global changes. We use a one-way coupled modeling framework to perform simulations under various combinations of 2000 to 2050 changes in climate, natural vegetation, anthropogenic emissions and land use to examine the effect of the CO2-isoprene interaction on atmospheric composition. We find that consideration of CO2 inhibition substantially reduces the sensitivity of surface ozone and secondary organic aerosol (SOA) to climate and natural vegetation, resulting in much smaller ozone and SOA increases in major populated regions than are projected by previous studies. The impact of land use on air quality is relatively insensitive to CO2 inhibition, rendering land use change the key factor that can offset or enhance the effects of anthropogenic emissions and shape air quality and climate-relevant species in the mid-21st century.
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