Periodic Reporting for period 1 - PARIS (Process Attribution of Regional Emissions)
Berichtszeitraum: 2023-01-01 bis 2024-06-30
Anthropogenic greenhouse gas (GHG) emissions are driving climate change, and national GHG inventories are crucial for identifying emissions and assessing reduction measures. PARIS aims to enhance these inventories by integrating atmospheric observations with inverse modeling, improving bottom-up estimates, and create draft annual Annexes to National Inventory Reports for eight European countries. Few countries, including the UK and Switzerland, currently use this combined approach, and PARIS seeks to expand its adoption across Europe. The project will refine estimates for fluorinated gases (F-gases), methane, carbon dioxide, and nitrous oxide, including the use of advanced isotopologue measurements and tracer-based analysis. Additionally, PARIS will develop methods for organic matter aerosol and black carbon emissions. The objectives include quantifying top-down emissions for major GHGs and black carbon, analysing source contributions, and producing time- and space-resolved flux estimates to reconcile national reporting under UNFCCC and CLRTAP frameworks.
Project Setup and Collaboration
During the first reporting period, the PARIS project focused on establishing infrastructure, harmonizing and expanding measurement networks, aligning models and frameworks, and engaging with inventory compiler teams. Collaborations were initiated with the sister projects EYE-CLIMA and AVENGERS. Engagement with inventory compilers from eight focus countries has been positive, with initial results from inverse models shared with representatives from the UK, Switzerland, Ireland, and Germany. Significant efforts have been made to align modeling frameworks and data flows, resulting in a comprehensive inter-comparison tool on the ICOS data portal. The first annexes for the eight countries will be created in Autumn 2024, based on these intercomparison plots.
Observation and Modelling Advances
PARIS has expanded the European F-gas observation network, established new continuous observation sites, and advanced methane, N2O, and APO measurements. For methane, portable IRMS instruments and continuous optical measurement systems have been deployed, with data collection progressing well. N2O observations have been harmonized across Europe, with inverse modeling highlighting seasonal emission flux cycles. Calibration strategies for high-frequency N2O observations have been revised, and a new APO measurement site in the Netherlands is being established. The project has also made significant progress in understanding organic matter in aerosols and black carbon emissions, with continuous monitoring and new attribution methods showing promising results. Upcoming steps include presenting results, deploying new instruments, and continuing the development of harmonized datasets for emission estimation.
During the first reporting period, the PARIS project focused on establishing infrastructure, harmonizing and expanding measurement networks, aligning models and frameworks, and engaging with inventory compiler teams. Collaborations were initiated with the sister projects EYE-CLIMA and AVENGERS. Engagement with inventory compilers from eight focus countries has been positive, with initial results from inverse models shared with representatives from the UK, Switzerland, Ireland, and Germany. Significant efforts have been made to align modeling frameworks and data flows, resulting in a comprehensive inter-comparison tool on the ICOS data portal. The first annexes for the eight countries will be created in Autumn 2024, based on these intercomparison plots.
Observation and Modelling Advances
PARIS has expanded the European F-gas observation network, established new continuous observation sites, and advanced methane, N2O, and APO measurements. For methane, portable IRMS instruments and continuous optical measurement systems have been deployed, with data collection progressing well. N2O observations have been harmonized across Europe, with inverse modeling highlighting seasonal emission flux cycles. Calibration strategies for high-frequency N2O observations have been revised, and a new APO measurement site in the Netherlands is being established. The project has also made significant progress in understanding organic matter in aerosols and black carbon emissions, with continuous monitoring and new attribution methods showing promising results. Upcoming steps include presenting results, deploying new instruments, and continuing the development of harmonized datasets for emission estimation.
Enhanced GHG Monitoring and Modelling Impact
The PARIS project has made significant progress in improving GHG emission monitoring and modelling, leading to more accurate and actionable emission estimates. By expanding observational networks, harmonising measurements, aligning models, and engaging with inventory compilers, PARIS has enhanced the evaluation of emission reduction efforts and will contribute by this to the development of more effective mitigation strategies. These advancements provide critical scientific and societal benefits, ensuring better-informed policy decisions and more targeted emission control measures.
Infrastructure and Collaborative Progress
PARIS established new continuous observation sites for F-gases across Europe, improving the accuracy of emission quantifications, especially in previously unmonitored regions. High-frequency N2O and CH4 observations have been harmonized, with new measurement systems deployed to enhance monitoring capabilities. Significant efforts in aligning modelling frameworks and data flows have resulted in robust tools for emission estimation, with data publicly available on the ICOS data portal. Collaborations with projects like EYE-CLIMA and AVENGERS have fostered data exchange and enhanced engagement with national inventory compilers, leading to the integration of top-down and bottom-up emission reporting methods. These collective efforts contribute to more precise GHG data sets, better model predictions, and ultimately more effective climate change mitigation strategies.
The PARIS project has made significant progress in improving GHG emission monitoring and modelling, leading to more accurate and actionable emission estimates. By expanding observational networks, harmonising measurements, aligning models, and engaging with inventory compilers, PARIS has enhanced the evaluation of emission reduction efforts and will contribute by this to the development of more effective mitigation strategies. These advancements provide critical scientific and societal benefits, ensuring better-informed policy decisions and more targeted emission control measures.
Infrastructure and Collaborative Progress
PARIS established new continuous observation sites for F-gases across Europe, improving the accuracy of emission quantifications, especially in previously unmonitored regions. High-frequency N2O and CH4 observations have been harmonized, with new measurement systems deployed to enhance monitoring capabilities. Significant efforts in aligning modelling frameworks and data flows have resulted in robust tools for emission estimation, with data publicly available on the ICOS data portal. Collaborations with projects like EYE-CLIMA and AVENGERS have fostered data exchange and enhanced engagement with national inventory compilers, leading to the integration of top-down and bottom-up emission reporting methods. These collective efforts contribute to more precise GHG data sets, better model predictions, and ultimately more effective climate change mitigation strategies.