Modelling biogenic and anthropogenic carbon dioxide exchange in urban area - A data fusion approach

Peiyuan Li, Zhi Hua Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Much effort of carbon dioxide (CO2) mitigation as the countermeasure to global changes has focused on the urban areas – the hotspots of fossil fuel and concentrated emission and pollutants. Despite their critical role in CO2 exchange in urban ecosystem, emission sources from vegetation and soil surfaces are largely overlooked in existing urban land surface models. In this study, we parameterized the biogenic CO2 exchange in cities using an advanced single-layer urban canopy model, by incorporating a plant physiological model in the built environment. In addition, the proposed model also includes the anthropogenic CO2 fluxes especially that from traffic emissions, based on gridded dataset. We evaluate the proposed model using CO2 measurements from an eddy covariance flux tower located at west Phoenix, Arizona, USA. The model results are in good agreement with the observed carbon flux over the built terrain, with a RMSE of 0.21 mg m-2s-1. Furthermore, our simulations show that the abiotic traffic-emitted CO2 amounts the largest source in cities, as expected. Nevertheless, the biogenic carbon exchange can be significantly enhanced in the built environment, which makes an equally important contributor to the total carbon emission especially in sub-urban areas.

Original languageEnglish (US)
Title of host publicationANZAScA 2020 - 54th International Conference of the Architectural Science Association
Subtitle of host publicationImaginable Futures: Design Thinking, and the Scientific Method
EditorsAli Ghaffarianhoseini, Amirhosein Ghaffarianhoseini, Nicola Naismith, Mahesh Babu Purushothaman, Dat Doan, Esther Aigwi, Funmi Rotimi, Nariman Ghodrati
PublisherArchitectural Science Association
Number of pages10
ISBN (Electronic)9780992383572
StatePublished - 2020
Event54th International Conference of the Architectural Science Association, ANZAScA 2020 - Virtual, Online, New Zealand
Duration: Nov 26 2020Nov 27 2020

Publication series

NameProceedings of the International Conference of Architectural Science Association
ISSN (Electronic)2209-3850


Conference54th International Conference of the Architectural Science Association, ANZAScA 2020
Country/TerritoryNew Zealand
CityVirtual, Online


  • Anthropogenic sources
  • CO2 exchange
  • Plant physiology
  • Urban canopy model

ASJC Scopus subject areas

  • Architecture
  • Building and Construction
  • Management, Monitoring, Policy and Law
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Urban Studies


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