Daytime CO2 urban surface fluxes from airborne measurements, eddy-covariance observations and emissions inventory in Greater London

Font, A., Grimmond, C. S. B. ORCID: https://orcid.org/0000-0002-3166-9415, Kotthaus, S., Morguí, J. -A., Stockdale, C., O'Connor, E., Priestman, M. and Barratt, B. (2015) Daytime CO2 urban surface fluxes from airborne measurements, eddy-covariance observations and emissions inventory in Greater London. Environmental Pollution, 196. pp. 98-106. ISSN 0269-7491 doi: 10.1016/j.envpol.2014.10.001

Abstract/Summary

Airborne measurements within the urban mixing layer (360 m) over Greater London are used to quantify CO2 emissions at the meso-scale. Daytime CO2 fluxes, calculated by the Integrative Mass Boundary Layer (IMBL) method, ranged from 46 to 104 μmol CO2 m−2 s−1 for four days in October 2011. The day-to-day variability of IMBL fluxes is at the same order of magnitude as for surface eddy-covariance fluxes observed in central London. Compared to fluxes derived from emissions inventory, the IMBL method gives both lower (by −37%) and higher (by 19%) estimates. The sources of uncertainty of applying the IMBL method in urban areas are discussed and guidance for future studies is given.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/37905
Identification Number/DOI	10.1016/j.envpol.2014.10.001
Refereed	Yes
Divisions	Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
Uncontrolled Keywords	Carbon dioxide; Urban fluxes; Aircraft surveys; Eddy covariance; Megacity; Emissions inventory
Publisher	Elsevier
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