Atmospheric carbonyl sulfide sources from anthropogenic activity: Implications for carbon cycle constraints
Journal Article
·
· Geophysical Research Letters
- Univ. of California, Merced, CA (United States)
- Univ. of California, Los Angeles, CA (United States)
- Joint Global Change Research Institute, PNNL, College Park, MD (United States)
- Carnegie Institution, Stanford, CA (United States)
Carbonyl sulfide (COS) has recently emerged as an atmospheric tracer of gross primary production. All modeling studies of COS air-monitoring data rely on a climatological anthropogenic inventory that does not reflect present conditions or support interpretation of ice core and firn trends. Here we develop a global anthropogenic inventory for the years 1850 to 2013 based on new emission measurements and material-specific data. By applying methods from a recent regional inventory to global data, we find that the anthropogenic source is similar in magnitude to the plant sink, confounding carbon cycle applications. However, a material-specific approach results in a current anthropogenic source that is only one third of plant uptake and is concentrated in Asia, supporting carbon cycle applications of global air-monitoring data. As a result, changes in the anthropogenic source alone cannot explain the century-scale mixing ratio growth, which suggests that ice and firn data may provide the first global history of gross primary production.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1208712
- Alternate ID(s):
- OSTI ID: 1402371
OSTI ID: 1182865
- Report Number(s):
- PNNL-SA--83003; KP1703020
- Journal Information:
- Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 8 Vol. 42; ISSN 0094-8276
- Publisher:
- American Geophysical UnionCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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