Gridded anthropogenic emissions inventory and atmospheric transport of carbonyl sulfide in the U.S.
- Univ. of California, Merced, CA (United States)
- Pacific Northwest National Lab. (PNNL), College Park, MD (United States)
Carbonyl sulfide (COS or OCS), the most abundant sulfur containing gas in the troposphere, has recently emerged as a potentially important atmospheric tracer for the carbon cycle. Atmospheric inverse modeling studies may be able to use existing tower, airborne, and satellite observations of COS to infer information about photosynthesis. However, such analysis relies on gridded anthropogenic COS source estimates that are largely based on industry activity data from over three decades ago. Here we use updated emission factor data and industry activity data to develop a gridded inventory with a 0.1 degree resolution for the U.S. domain. The inventory includes the primary anthropogenic COS sources including direct emissions from the coal and aluminum industries as well as indirect sources from industrial carbon disulfide emissions. Compared to the previously published inventory, we found that the total anthropogenic source (direct and indirect) is 47% smaller. Here, using this new gridded inventory to drive the STEM/WRF atmospheric transport model, we found that the anthropogenic contribution to COS variation in the troposphere is small relative to the biosphere influence, which is encouraging of carbon cycle applications in this region. Additional anthropogenic sectors with highly uncertain emission factors require further field measurements.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); Office of Terrestrial Ecosystem Sciences
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1353340
- Alternate ID(s):
- OSTI ID: 1402390
- Report Number(s):
- PNNL-SA-125015; KP1703020
- Journal Information:
- Journal of Geophysical Research: Atmospheres, Vol. 122, Issue 4; ISSN 2169-897X
- Publisher:
- American Geophysical UnionCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Reviews and syntheses: Carbonyl sulfide as a multi-scale tracer for carbon and water cycles
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journal | January 2018 |
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Atmospheric carbonyl sulfide sources from anthropogenic activity: Implications for carbon cycle constraints