EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

CO2 ecosystem-atmosphere exchange in Krakow, Poland – preliminary results from a new European Fluxes Database Cluster EC urban station

Alina Jasek-Kaminska1,2, Miroslaw Zimnoch1, Lukasz Chmura1,2, and Jakub Bartyzel1
Alina Jasek-Kaminska et al.
  • 1AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Department of Environmental Physics, Krakow, Poland (
  • 2Institute of Meteorology and Water Management – National Research Institute, Poland

Urban areas, being a considerate source of CO2, at the same time are one of the most complicated ecosystems, with some uncertain components still present in the local carbon cycle. Complications with CO2 dynamics monitoring arise from high heterogeneity of the area and the presence of various sources, but also from a not entirely explored impact of urbanization on the local biosphere. There is a growing need for experimental data to verify existing CO2 emission inventories and to serve as a reliable input to climate models.

In February 2021, an eddy covariance site was established in Krakow, southern Poland, to investigate CO2 exchange in its urban ecosystem. The neighborhood of the site is highly heterogeneous, including various anthropogenic sources such as traffic, household heating, and humans themselves; however, a considerable part of the source area is covered with green, including home gardens, a soccer stadium, and a municipal park.

We present a first sight of the CO2 eddy covariance flux results that were obtained since the site was established. The city is undoubtedly a net CO2 source. A significant diurnal variation in the CO2 flux amplitude was observed in the warm season as compared to winter, with the highest positive values during the night and negative values during the day, indicating effective CO2 photosynthetic uptake. Morning and afternoon traffic peaks were not clearly pronounced: the area is highly heterogeneous and includes other sources as well that may have their own diurnal variability overlapping the traffic signal.

This project has been partially supported by the European Union’s Horizon 2020 research and innovation programme under grant agreement No 958927, and the subsidy of the Ministry of Education and Science.

How to cite: Jasek-Kaminska, A., Zimnoch, M., Chmura, L., and Bartyzel, J.: CO2 ecosystem-atmosphere exchange in Krakow, Poland – preliminary results from a new European Fluxes Database Cluster EC urban station, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-11716,, 2022.