Photosynthetic Control of Atmospheric Carbonyl Sulfide During the Growing Season

  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},
  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
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
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
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
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
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
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


Global budget of atmospheric carbonyl sulfide: Temporal and spatial variations of the dominant sources and sinks
[1] The spatial and temporal variability of the global fluxes of carbonyl sulfide (COS) is discussed together with possible implications for total column atmospheric COS loading. The input of COSExpand
Europe-wide reduction in primary productivity caused by the heat and drought in 2003
An increase in future drought events could turn temperate ecosystems into carbon sources, contributing to positive carbon-climate feedbacks already anticipated in the tropics and at high latitudes. Expand
Latitudinal variation in oxygen-18 of atmospheric CO2
This report provides information on a potentially important new atmospheric tracer of large-scale behaviour at the Earth's surface, the oxygen isotope composition of CO2. We use measurements on flaskExpand
Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model
Results from a fully coupled, three-dimensional carbon–climate model are presented, indicating that carbon-cycle feedbacks could significantly accelerate climate change over the twenty-first century. Expand
Vegetation effects on the isotope composition of oxygen in atmospheric CO2
THE 18O/16O ratio in atmospheric CO2 is a signal dominated by CO2 exchange with the terrestrial biosphere and it has considerable potential to resolve the current importance of the oceans andExpand
Carbonyl sulfide (OCS): Large‐scale distributions over North America during INTEX‐NA and relationship to CO2
[1] An extensive set of carbonyl sulfide (OCS) observations were made as part of the NASA Intercontinental Chemical Transport Experiment–North America (INTEX-NA) study, flown from 1 July to 14 AugustExpand
Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO 2 )
Abstract. COS uptake by trees, as observed under dark/light changes and under application of the plant hormone abscisic acid, exhibited a strong correlation with the CO2 assimilation rate and theExpand
On the global distribution, seasonality, and budget of atmospheric carbonyl sulfide (COS) and some similarities to CO2
[1] Measurements of carbonyl sulfide (COS) from a global air-monitoring network over multiple years suggest that atmospheric mixing ratios of COS are strongly influenced by terrestrial vegetation inExpand
Differences between surface and column atmospheric CO2 and implications for carbon cycle research
[1] We used a three-dimensional atmospheric transport model to investigate several aspects of column CO2 that are important for the design of new satellite-based observation systems and for theExpand
Estimating regional carbon exchange in New England and Quebec by combining atmospheric, ground-based and satellite data
We derive regional-scale (∼104 km2) CO2 flux estimates for summer 2004 in the northeast United States and southern Quebec by assimilating extensive data into a receptor-oriented model-data fusionExpand