Impact of preindustrial biomass‐burning emissions on the oxidation pathways of tropospheric sulfur and nitrogen
International audience Ice core measurements (H 2 O 2 and CH 4 /HCHO) and modeling studies indicate a change in the oxidation capacity of the atmosphere since the onset of the Industrial Revolution due to increases in fossil fuel burning emissions [e.g., Lelieveld et al. , 2002 Hauglustaine and Bras...
Published in: | Journal of Geophysical Research: Atmospheres |
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Main Authors: | , , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2004
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Subjects: | |
Online Access: | https://hal.science/hal-04418348 https://hal.science/hal-04418348/document https://hal.science/hal-04418348/file/Journal%20of%20Geophysical%20Research%20Atmospheres%20-%202004%20-%20Alexander%20-%20Impact%20of%20preindustrial%20biomass%E2%80%90burning%20emissions%20on%20the.pdf https://doi.org/10.1029/2003JD004218 |
Summary: | International audience Ice core measurements (H 2 O 2 and CH 4 /HCHO) and modeling studies indicate a change in the oxidation capacity of the atmosphere since the onset of the Industrial Revolution due to increases in fossil fuel burning emissions [e.g., Lelieveld et al. , 2002 Hauglustaine and Brasseur , 2001 Wang and Jacob , 1998 Staffelbach et al. , 1991 ]. The mass‐independent fractionation (MIF) in the oxygen isotopes of sulfate and nitrate from a Greenland ice core reveal that biomass‐burning events in North America just prior to the Industrial Revolution significantly impacted the oxidation pathways of sulfur and nitrogen species deposited in Greenland ice. This finding highlights the importance of biomass‐burning emissions for atmospheric chemistry in preindustrial North America and warrants the inclusion of this impact in modeling studies estimating changes in atmospheric oxidant chemistry since the Industrial Revolution, particularly when using paleo‐oxidant data as a reference for model evaluation. |
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