Photosynthetic Control of Atmospheric Carbonyl Sulfide During the Growing Season

@article{Campbell2008PhotosyntheticCO,
  title={Photosynthetic Control of Atmospheric Carbonyl Sulfide During the Growing Season},
  author={J. Elliott Campbell and Gregory R. Carmichael and Tianfeng Chai and Marcelo Mena-Carrasco and Y. Tang and Donald Ray Blake and Nicola J. Blake and Stephanie A. Vay and George J. Collatz and Ian T. Baker and Joseph A. Berry and Stephen A. Montzka and Colm Sweeney and J. L. Schnoor and Charles O. Stanier},
  journal={Science},
  year={2008},
  volume={322},
  pages={1085 - 1088}
}
Climate models incorporate photosynthesis-climate feedbacks, yet we lack robust tools for large-scale assessments of these processes. Recent work suggests that carbonyl sulfide (COS), a trace gas consumed by plants, could provide a valuable constraint on photosynthesis. Here we analyze airborne observations of COS and carbon dioxide concentrations during the growing season over North America with a three-dimensional atmospheric transport model. We successfully modeled the persistent vertical… Expand
Constraining surface carbon fluxes using in situ measurements of carbonyl sulfide and carbon dioxide
Understanding the processes that control the terrestrial exchange of carbon is critical for assessing atmospheric CO2 budgets. Carbonyl sulfide (COS) is taken up by vegetation during photosynthesisExpand
Sources and sinks of carbonyl sulfide in an agricultural field in the Southern Great Plains
TLDR
The dataset demonstrates that vegetation uptake is the dominant ecosystem COS flux in the peak growing season, providing support of COS as an independent tracer of terrestrial photosynthesis and the observation that ecosystems may become a COS source at high temperature needs to be considered in global modeling studies. Expand
Constraining the Terrestrial Carbon Cycle with Atmospheric Measurements of Carbonyl Sulfide
Introduction • Carbonyl sulfide is an analog of CO2. It participates in some key reactions of the carbon cycle, and monitoring its concentration, like that of the 13C and 18O isotopologs of CO2, canExpand
Influences of light and humidity on carbonyl sulfide-based estimates of photosynthesis
TLDR
This study shows that COS-based GPP estimates will be significantly overestimated if the different environmental responses of COS and CO2 uptake are not taken into account, and it is essential to incorporate the variability of LRU with environmental variables for accurate estimation of GPP on ecosystem, regional, and global scales. Expand
COS-derived GPP relationships with temperature and light help explain high-latitude atmospheric CO2 seasonal cycle amplification
TLDR
In spring to midsummer, when GPP is most strongly correlated with soil temperature, the results suggest the warming-induced increases of GPP likely exceeded the increases of ER over the past four decades. Expand
Seasonal fluxes of carbonyl sulfide in a midlatitude forest
TLDR
Observations of OCS flux provide powerful, independent means to test and refine land surface and carbon cycle models at the ecosystem scale, and reveal previously unseen heterogeneity of forest canopy processes. Expand
Tropospheric carbonyl sulfide mass balance based on direct measurements of sulfur isotopes
TLDR
Measurement-based assessments for the isotopic signal of: tropospheric COS, marine and anthropogenic COS emissions, and the isotopy fractionation of COS by plant uptake resulted in an isotopic mass balance for the COS budget which gives an important constraint for its sources. Expand
Title A coupled model of the global cycles of carbonyl sulfide and CO 2 : A possible new window on the carbon cycle
[1] Carbonyl sulfide (COS) is an atmospheric trace gas that participates in some key reactions of the carbon cycle and thus holds great promise for studies of carbon cycle processes. GlobalExpand
Plant gross primary production, plant respiration and carbonyl sulfide emissions over the globe inferred by atmospheric inverse modelling
Abstract. Carbonyl Sulphide (COS), a trace gas showing striking similarity to CO2 in terms of biochemical diffusion pathway into leaves, has been recognized as a promising indicator of the plantExpand
Assessing canopy performance using carbonyl sulfide measurements
TLDR
The results support the feasibility of using COS as a powerful and much-needed means of assessing ecosystem function and its response to change. Expand
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