TY - GEN
T1 - Modelling biogenic and anthropogenic carbon dioxide exchange in urban area - A data fusion approach
AU - Li, Peiyuan
AU - Wang, Zhi Hua
N1 - Funding Information:
This study is based upon work supported by the US National Science Foundation (NSF) under grant # AGS-1930629. We acknowledge the Central Arizona-Phoenix Long-Term Ecological Research (CAP LTER) project under NSF grant # DEB-1637590 for providing the field measurement dataset.
Publisher Copyright:
© 2020 and published by the Architectural Science Association (ANZAScA).
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - Anthropogenic sources
KW - CO2 exchange
KW - Plant physiology
KW - Urban canopy model
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M3 - Conference contribution
AN - SCOPUS:85103632004
T3 - Proceedings of the International Conference of Architectural Science Association
SP - 755
EP - 764
BT - ANZAScA 2020 - 54th International Conference of the Architectural Science Association
A2 - Ghaffarianhoseini, Ali
A2 - Ghaffarianhoseini, Amirhosein
A2 - Naismith, Nicola
A2 - Purushothaman, Mahesh Babu
A2 - Doan, Dat
A2 - Aigwi, Esther
A2 - Rotimi, Funmi
A2 - Ghodrati, Nariman
PB - Architectural Science Association
T2 - 54th International Conference of the Architectural Science Association, ANZAScA 2020
Y2 - 26 November 2020 through 27 November 2020
ER -