Articles | Volume 19, issue 23
https://doi.org/10.5194/acp-19-14741-2019
https://doi.org/10.5194/acp-19-14741-2019
Research article
 | 
09 Dec 2019
Research article |  | 09 Dec 2019

Variability in a four-network composite of atmospheric CO2 differences between three primary baseline sites

Roger J. Francey, Jorgen S. Frederiksen, L. Paul Steele, and Ray L. Langenfelds

Related authors

Revised records of atmospheric trace gases CO2, CH4, N2O, and δ13C-CO2 over the last 2000 years from Law Dome, Antarctica
Mauro Rubino, David M. Etheridge, David P. Thornton, Russell Howden, Colin E. Allison, Roger J. Francey, Ray L. Langenfelds, L. Paul Steele, Cathy M. Trudinger, Darren A. Spencer, Mark A. J. Curran, Tas D. van Ommen, and Andrew M. Smith
Earth Syst. Sci. Data, 11, 473–492, https://doi.org/10.5194/essd-11-473-2019,https://doi.org/10.5194/essd-11-473-2019, 2019
Short summary
The Macquarie Island (LoFlo2G) high-precision continuous atmospheric carbon dioxide record
Ann R. Stavert, Rachel M. Law, Marcel van der Schoot, Ray L. Langenfelds, Darren A. Spencer, Paul B. Krummel, Scott D. Chambers, Alistair G. Williams, Sylvester Werczynski, Roger J. Francey, and Russell T. Howden
Atmos. Meas. Tech., 12, 1103–1121, https://doi.org/10.5194/amt-12-1103-2019,https://doi.org/10.5194/amt-12-1103-2019, 2019
Short summary
Unprecedented strength of Hadley circulation in 2015–2016 impacts on CO2 interhemispheric difference
Jorgen S. Frederiksen and Roger J. Francey
Atmos. Chem. Phys., 18, 14837–14850, https://doi.org/10.5194/acp-18-14837-2018,https://doi.org/10.5194/acp-18-14837-2018, 2018
Short summary
The 2009–2010 step in atmospheric CO2 interhemispheric difference
R. J. Francey and J. S. Frederiksen
Biogeosciences, 13, 873–885, https://doi.org/10.5194/bg-13-873-2016,https://doi.org/10.5194/bg-13-873-2016, 2016
Short summary

Related subject area

Subject: Gases | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
Estimation of seasonal methane fluxes over a Mediterranean rice paddy area using the Radon Tracer Method (RTM)
Roger Curcoll, Alba Àgueda, Josep-Anton Morguí, Lídia Cañas, Sílvia Borràs, Arturo Vargas, and Claudia Grossi
Atmos. Chem. Phys., 25, 6299–6323, https://doi.org/10.5194/acp-25-6299-2025,https://doi.org/10.5194/acp-25-6299-2025, 2025
Short summary
Surface-observation-constrained high-frequency coal mine methane emissions in Shanxi, China, reveal more emissions than inventories, consistent with satellite inversion
Fan Lu, Kai Qin, Jason Blake Cohen, Qin He, Pravash Tiwari, Wei Hu, Chang Ye, Yanan Shan, Qing Xu, Shuo Wang, and Qiansi Tu
Atmos. Chem. Phys., 25, 5837–5856, https://doi.org/10.5194/acp-25-5837-2025,https://doi.org/10.5194/acp-25-5837-2025, 2025
Short summary
Locating and quantifying CH4 sources within a wastewater treatment plant based on mobile measurements
Junyue Yang, Zhengning Xu, Zheng Xia, Xiangyu Pei, Yunye Yang, Botian Qiu, Shuang Zhao, Yuzhong Zhang, and Zhibin Wang
Atmos. Chem. Phys., 25, 4571–4585, https://doi.org/10.5194/acp-25-4571-2025,https://doi.org/10.5194/acp-25-4571-2025, 2025
Short summary
The ZiCOS-M CO2 sensor network: measurement performance and CO2 variability across Zurich
Stuart K. Grange, Pascal Rubli, Andrea Fischer, Dominik Brunner, Christoph Hueglin, and Lukas Emmenegger
Atmos. Chem. Phys., 25, 2781–2806, https://doi.org/10.5194/acp-25-2781-2025,https://doi.org/10.5194/acp-25-2781-2025, 2025
Short summary
Measurement report: The effects of SECA regulations on the atmospheric SO2 concentrations in the Baltic Sea, based on long-term observations on the Finnish island, Utö
Androniki Maragkidou, Tiia Grönholm, Laura Rautiainen, Juha Nikmo, Jukka-Pekka Jalkanen, Timo Mäkelä, Timo Anttila, Lauri Laakso, and Jaakko Kukkonen
Atmos. Chem. Phys., 25, 2443–2457, https://doi.org/10.5194/acp-25-2443-2025,https://doi.org/10.5194/acp-25-2443-2025, 2025
Short summary

Cited articles

Bowman, K. P. and Cohen, P. J.: Interhemispheric exchange by seasonal modulation of the Hadley Circulation, J. Atmos. Sci., 54, 2045–2059, 1997. 
Chambers, S. D., Williams, A. G., Conen, F., Griffiths, A. D., Reimann, S., Steinbacher, M., Krummel, P. B., Steele, L. P., van der Schoot, M. V., Galbally, I. E., Molloy, S. B., and Barnes J. E.: Towards a Universal “Baseline” Characterisation of Air Masses for High- and Low-Altitude Observing Stations Using Radon-222, Aerosol Air Qual. Res., 16, 885–899, 2016, https://doi.org/10.4209/aaqr.2015.06.0391, 2016. 
CSIRO: CSIRO Oceans and Atmosphere GASLAB data October 2018, Commonwealth Scientific and Industrial Research Organisation, available at: ftp://gaspublic:gaspublic@pftp.csiro.au/pub/data/gaslab/ (last access: 28 January 2019), 2018. 
Conway, T. J., Tans, P. P., Waterman, L. S., Thoning, K. W., Kitzis, D. R., Masarie, K. A., and Zhang, N.: Evidence for interannual variability of the carbon cycle from the National Oceanic and Atmospheric Administration/Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network, J. Geophys. Res., 99, 22831–22855, 1994. 
Download
Short summary
25-year composites of interhemispheric baseline CO2 differences demonstrate close agreement between 4 monitoring networks. Variability from monthly to multiyear time frames mostly reflects variability in upper troposphere dynamical indices chosen to represent eddy and mean transport interhemispheric exchange. Monthly interhemispheric atmospheric fluxes are much larger than air–surface terrestrial exchanges. The composite differences offer unusual constraints on transport in global carbon models.
Share
Altmetrics
Final-revised paper
Preprint