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

A. Font; C. S.B. Grimmond; S. Kotthaus; J. A. Morguí; C. Stockdale; E. O'Connor; M. Priestman; B. Barratt

doi:10.1016/j.envpol.2014.10.001

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

A. Font
, C. S.B. Grimmond
, S. Kotthaus
, J. A. Morguí
, C. Stockdale
, E. O'Connor
, M. Priestman
, B. Barratt

King's College London
University of Reading
Institut Català de Cie`ncies del Clima

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	98-106
Number of pages	9
Journal	Environmental Pollution
Volume	196
DOIs	https://doi.org/10.1016/j.envpol.2014.10.001
Publication status	Published - 1 Jan 2015
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 11 Sustainable Cities and Communities

Keywords

Aircraft surveys
Carbon dioxide
Eddy covariance
Emissions inventory
Megacity
Urban fluxes

Access to Document

10.1016/j.envpol.2014.10.001

Cite this

@article{cd59425e765a41fa95b8061a5ce00e58,

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

abstract = "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.",

keywords = "Aircraft surveys, Carbon dioxide, Eddy covariance, Emissions inventory, Megacity, Urban fluxes",

author = "A. Font and Grimmond, \{C. S.B.\} and S. Kotthaus and Morgu{\'i}, \{J. A.\} and C. Stockdale and E. O'Connor and M. Priestman and B. Barratt",

year = "2015",

month = jan,

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doi = "10.1016/j.envpol.2014.10.001",

language = "English",

volume = "196",

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journal = "Environmental Pollution",

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TY - JOUR

T1 - Daytime CO2 urban surface fluxes from airborne measurements, eddy-covariance observations and emissions inventory in Greater London

AU - Font, A.

AU - Grimmond, C. S.B.

AU - Kotthaus, S.

AU - Morguí, J. A.

AU - Stockdale, C.

AU - O'Connor, E.

AU - Priestman, M.

AU - Barratt, B.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - 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.

AB - 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.

KW - Aircraft surveys

KW - Carbon dioxide

KW - Eddy covariance

KW - Emissions inventory

KW - Megacity

KW - Urban fluxes

UR - https://www.scopus.com/pages/publications/84938100037

U2 - 10.1016/j.envpol.2014.10.001

DO - 10.1016/j.envpol.2014.10.001

M3 - Article

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VL - 196

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JO - Environmental Pollution

JF - Environmental Pollution

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