Anthropic areas, such as cities, are recognized to constitute the major source of the CO2 emitted into the atmosphere, and Greenhouse Gases Emissions (GHG) in urban environment derive from different sources (human respiration, domestic heating/cooling, transportation, etc.). Cities, therefore, can affect the global carbon cycle, the atmosphere, and the climate. The link between urbanization and global climate change is complex, and since the urbanization process is increasing worldwide, it becomes crucial to better understand the role of cities in the global warming phenomenon, the interaction between natural and anthropogenic processes, and quantify the urban carbon exchanges. As part of a Regional Project, in the city of Sassari (Sardinia, Italy) a research activity has been carried out with the general aim to quantify urban fluxes and identify the main GHG emissions sources. A combined methodology is used for this purpose: (1) direct measurements and (2) an inventory approach. An Eddy Covariance tower is to be set up in the Sassari city center to constantly monitor energy, water, and carbon fluxes at about 24 m above the ground. In addition, a meteorological station and radiometers are to be installed to analyze the environmental characteristics affecting urban fluxes. A local simplified GHG emissions inventory, developed through standardized procedure guidelines, is also compiled and city emissions were quantified and classified by type of greenhouse gas, manufacturing activity, and source emissive. The inventory tool also allowed a spatio-temporal analysis of the emissions and the temporal disaggregation of the collected annually emissions to produce data on a monthly, and/or daily, and/or hourly time scale. The combined methodology is able to provide information on the current status of emissions and removals of CO2, through direct measurements and the local inventory, which will help local stakeholders to identify low carbon emissions options for the future planning strategy. The projects activities, methodologies applied, as well as the preliminary results will be reported here.
GHG emissions estimation over a Mediterranean city through direct measurements and inventory approach
Sanna Laura;Ferrara Roberto;Duce Pierpaolo;
2015
Abstract
Anthropic areas, such as cities, are recognized to constitute the major source of the CO2 emitted into the atmosphere, and Greenhouse Gases Emissions (GHG) in urban environment derive from different sources (human respiration, domestic heating/cooling, transportation, etc.). Cities, therefore, can affect the global carbon cycle, the atmosphere, and the climate. The link between urbanization and global climate change is complex, and since the urbanization process is increasing worldwide, it becomes crucial to better understand the role of cities in the global warming phenomenon, the interaction between natural and anthropogenic processes, and quantify the urban carbon exchanges. As part of a Regional Project, in the city of Sassari (Sardinia, Italy) a research activity has been carried out with the general aim to quantify urban fluxes and identify the main GHG emissions sources. A combined methodology is used for this purpose: (1) direct measurements and (2) an inventory approach. An Eddy Covariance tower is to be set up in the Sassari city center to constantly monitor energy, water, and carbon fluxes at about 24 m above the ground. In addition, a meteorological station and radiometers are to be installed to analyze the environmental characteristics affecting urban fluxes. A local simplified GHG emissions inventory, developed through standardized procedure guidelines, is also compiled and city emissions were quantified and classified by type of greenhouse gas, manufacturing activity, and source emissive. The inventory tool also allowed a spatio-temporal analysis of the emissions and the temporal disaggregation of the collected annually emissions to produce data on a monthly, and/or daily, and/or hourly time scale. The combined methodology is able to provide information on the current status of emissions and removals of CO2, through direct measurements and the local inventory, which will help local stakeholders to identify low carbon emissions options for the future planning strategy. The projects activities, methodologies applied, as well as the preliminary results will be reported here.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
