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. Morgui; C. Stockdate; 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. Morgui, C. Stockdate, E. O'Connor, M Priestman, B Barratt

Analytical, Environmental & Forensic Sciences

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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
Early online date	13 Oct 2014
DOIs	https://doi.org/10.1016/j.envpol.2014.10.001
Publication status	Published - Jan 2015

Keywords

carbon dioxide
urban fluxes
aircraft surveys
eddy covariance
megacity
emissions inventory

UN SDGs

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

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10.1016/j.envpol.2014.10.001

Daytime CO2 urban surface_FONT_Accepted4Oct2014_GREEN AAMAccepted author manuscript, 1.26 MBLicence: CC BY-NC-ND

Cite this

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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 = "carbon dioxide, urban fluxes, aircraft surveys, eddy covariance, megacity, emissions inventory",

author = "A Font and C.S.B. Grimmond and S. Kotthaus and J.-A. Morgui and C. Stockdate and E. O'Connor and M Priestman and B Barratt",

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

language = "English",

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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 - Morgui, J.-A.

AU - Stockdate, C.

AU - O'Connor, E.

AU - Priestman, M

AU - Barratt, B

PY - 2015/1

Y1 - 2015/1

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 - carbon dioxide

KW - urban fluxes

KW - aircraft surveys

KW - eddy covariance

KW - megacity

KW - emissions inventory

U2 - 10.1016/j.envpol.2014.10.001

DO - 10.1016/j.envpol.2014.10.001

M3 - Article

SN - 0269-7491

VL - 196

SP - 98

EP - 106

JO - ENVIRONMENTAL POLLUTION

JF - ENVIRONMENTAL POLLUTION

ER -

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

Abstract

Keywords

UN SDGs

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