A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Five years of carbon dioxide fluxes measurements in a highly vegetated suburban area
Abstract Suburban areas continue to grow rapidly and are potentially an important land-use category for anthropogenic carbon-dioxide (CO2) emissions. Here eddy covariance techniques are used to obtain ecosystem-scale measurements of CO2 fluxes (F C) from a suburban area of Baltimore, Maryland, USA (2002–2006). These are among the first multi-year measurements of F C in a suburban area. The study area is characterized by low population density (1500inhabitants km−2) and abundant vegetation (67.4% vegetation land-cover). F C is correlated with photosynthetic active radiation (PAR), soil temperature, and wind direction. Missing hourly F C is gap-filled using empirical relations between F C, PAR, and soil temperature. Diurnal patterns show net CO2 emissions to the atmosphere during winter and net CO2 uptake by the surface during summer daytime hours (summer daily total is −1.25gCm−2 d−1). Despite the large amount of vegetation the suburban area is a net CO2 source of 361gCm−2 y−1 on average.
Research highlights ► Eddy covariance measurements of CO2 fluxes (F C) for suburban Baltimore (2002–06). ► Among the first multi-year measurements of F C in a suburban area. ► Area: low population (1500inhabitants km−2) and abundant vegetation (67.4%). ► Source of CO2 (winter) and sink in summer (summer daily total −1.25gCm−2 d−1). ► Despite large amount of vegetation: net source of CO2 (361gCm−2 y−1 mean).
Five years of carbon dioxide fluxes measurements in a highly vegetated suburban area
Abstract Suburban areas continue to grow rapidly and are potentially an important land-use category for anthropogenic carbon-dioxide (CO2) emissions. Here eddy covariance techniques are used to obtain ecosystem-scale measurements of CO2 fluxes (F C) from a suburban area of Baltimore, Maryland, USA (2002–2006). These are among the first multi-year measurements of F C in a suburban area. The study area is characterized by low population density (1500inhabitants km−2) and abundant vegetation (67.4% vegetation land-cover). F C is correlated with photosynthetic active radiation (PAR), soil temperature, and wind direction. Missing hourly F C is gap-filled using empirical relations between F C, PAR, and soil temperature. Diurnal patterns show net CO2 emissions to the atmosphere during winter and net CO2 uptake by the surface during summer daytime hours (summer daily total is −1.25gCm−2 d−1). Despite the large amount of vegetation the suburban area is a net CO2 source of 361gCm−2 y−1 on average.
Research highlights ► Eddy covariance measurements of CO2 fluxes (F C) for suburban Baltimore (2002–06). ► Among the first multi-year measurements of F C in a suburban area. ► Area: low population (1500inhabitants km−2) and abundant vegetation (67.4%). ► Source of CO2 (winter) and sink in summer (summer daily total −1.25gCm−2 d−1). ► Despite large amount of vegetation: net source of CO2 (361gCm−2 y−1 mean).
Five years of carbon dioxide fluxes measurements in a highly vegetated suburban area
Crawford, Ben (author) / Grimmond, C.S.B. (author) / Christen, Andreas (author)
Atmospheric Environment ; 45 ; 896-905
2010-11-11
10 pages
Article (Journal)
Electronic Resource
English
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