The International Carbon Dioxide Conference (ICDC) is the single largest conference organized by the global research community every four years to present the latest scientific findings on the science of the carbon cycle and its perturbation by human activities. The ICDC10 in 2017 is the 10th anniversary conference. It covers fundamental science advancement and discovery, the generation of policy relevant information, and observational and modeling approaches. ICDC10 brings together scientists from different disciplines to work towards an integrated view on the global cycle of carbon in the Earth system.

The main themes of the conference are as follows:

1. The contemporary carbon cycle
   • Trends, variability, and time of emergence of human impacts
   • Emerging approaches and novel techniques in observations
2. The paleo-perspective: patterns, processes, and planetary bounds
3. Biogeochemical processes
   • Process understanding and human impacts
   • Coping with complexity: from process understanding to robust models
4. Scenarios of the future Earth and steps toward long-term Earth system stability

GGMT-2017 is a key conference on measurement techniques for accurate observation of long- lived greenhouse and related gases, their isotopic composition in the atmosphere relevant for climate change, and global warming research findings. The biannual meeting, known as the WMO/IAEA Meeting of Experts on Carbon Dioxide, Other Greenhouse Gases and Related Tracer Measurement Techniques, is to be held for the 19th time in 2017.

Main topics:

• Developments of the GHG networks
• CO2 observations (measurement techniques and calibration)
• Non-CO2 observations (measurement techniques and calibration)
• Isotope measurement and calibration
• Emerging techniques
• GHG standards and comparison activities
• Integration of observations, data products and policy

The special issue is open for papers that emerged from ICDC10 and GGMT -2017 conference contributions.