Anthropogenic Impacts on Atmospheric Carbonyl Sulfide Since the 19th Century Inferred From Polar Firn Air and Ice Core Measurements
Name
JGR Atmospheres - 2020 - Aydin - Anthropogenic Impacts on Atmospheric Carbonyl Sulfide Since the 19th Century Inferred From.pdf
Description
Published version
Size
3.04 MB
Format
Adobe PDF
Checksum (MD5)
758815580096421e7cf7f9b1975d4be8
Author(s)
Aydin, M
Britten, GL
Montzka, SA
Buizert, C
Primeau, F
Petrenko, V
Battle, MB
Nicewonger, MR
Patterson, J
Hmiel, B
Date Issued
August 3, 2020
Journal
Journal of Geophysical Research: Atmospheres
Publisher
American Geophysical Union
Citation
Aydin, M., Britten, G. L., Montzka, S. A., Buizert, C., Primeau, F., & Petrenko, V., et al. (2020). Anthropogenic impacts on atmospheric carbonyl sulfide since the 19th century inferred from polar firn air and ice core measurements. Journal of Geophysical Research: Atmospheres, 125, e2020JD033074.
Version
Final published version
Abstract
Carbonyl sulfide (COS) was measured in firn air collected during seven different field campaigns carried out at four different sites in Greenland and Antarctica between 2001 and 2015. A Bayesian probabilistic statistical model is used to conduct multisite inversions and to reconstruct separate atmospheric histories for Greenland and Antarctica. The firn air inversions cover most of the 20th century over Greenland and extend back to the 19th century over Antarctica. The derived atmospheric histories are consistent with independent surface air time series data from the corresponding sites and the Antarctic ice core COS records during periods of overlap. Atmospheric COS levels began to increase over preindustrial levels starting in the 19th century, and the increase continued for much of the 20th century. Atmospheric COS peaked at higher than present‐day levels around 1975 CE over Greenland and around 1987 CE over Antarctica. An atmosphere/surface ocean box model is used to investigate the possible causes of observed variability. The results suggest that changes in the magnitude and location of anthropogenic sources have had a strong influence on the observed atmospheric COS variability.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1029/2020jd033074
