Mesoscale Network for Monitoring Greenhouse Gas and Pollutant Emissions

• Applicant: Professorin Dr.-Ing. Jia Chen
• Subject Area: Atmospheric Science ; Measurement Systems
• Term: from 2019 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 419317138

• Final Report Year: 2024

Final Report Abstract

Climate change has a global impact and concerns our living conditions and society. Anthropogenic greenhouse gas (GHG) emissions contribute significantly to the present global warming. The temperature increase should be limited to well below 2°C above pre-industrial levels, according to the “Paris Agreement”. This requires global efforts. Urban areas emit more than 70 % of CO2 generated by fossil fuel combustion. Accurate methods are required to monitor the carbon flux originating from urban areas and cities to mitigate global warming. To this end, the permanent and automated column concentration measurement network MUCCnet was established. MUCCnet consists of five automated sensor systems, based on Fourier transform infrared spectrometers EM27/SUNs and self-developed enclosures, which are located in and around the city of Munich, Germany. These instruments measure the total concentrations of CO2 and CH4, which is the second-most prevalent anthropogenic GHG, along the slant column towards the sun. From upwind and downwind differences between these observations the GHG emissions of Munich are estimated. Within this project, we have developed, established, operated and maintained the measurement network MUCCnet, retrieved the data, and developed the necessary modelling framework needed to estimate the emissions. Our modelling framework consists of a Eulerian model to simulate the wind fields (in our case the Weather Research & Forecasting model) and a Lagrangeian model to simulate the GHG dispersion (in this case the Stochastic Time-Inverted Lagrangian Transport model). This framework is capable of quantifying emission sources and of detecting unknown sources. In future, it can be installed in other cities and regions. These measurement-based emission data will serve as a basis to monitor and validate the GHG reduction plans of cities, countries, and continents.

Publications

• Automated enclosure and protection system for compact solar-tracking spectrometers. Atmospheric Measurement Techniques, 11(4), 2173-2185.
  Heinle, Ludwig & Chen, Jia
  
• Building the COllaborative Carbon Column Observing Network (COCCON): long-term stability and ensemble performance of the EM27/SUN Fourier transform spectrometer. Atmospheric Measurement Techniques, 12(3), 1513-1530.
  Frey, Matthias; Sha, Mahesh K.; Hase, Frank; Kiel, Matthäus; Blumenstock, Thomas; Harig, Roland; Surawicz, Gregor; Deutscher, Nicholas M.; Shiomi, Kei; Franklin, Jonathan E.; Bösch, Hartmut; Chen, Jia; Grutter, Michel; Ohyama, Hirofumi; Sun, Youwen; Butz, André; Mengistu, Tsidu Gizaw; Ene, Dragos; Wunch, Debra ... & Orphal, Johannes
  
• Quantifying CH 4 emissions from hard coal mines using mobile sun-viewing Fourier transform spectrometry. Atmospheric Measurement Techniques, 12(10), 5217-5230.
  Luther, Andreas; Kleinschek, Ralph; Scheidweiler, Leon; Defratyka, Sara; Stanisavljevic, Mila; Forstmaier, Andreas; Dandocsi, Alexandru; Wolff, Sebastian; Dubravica, Darko; Wildmann, Norman; Kostinek, Julian; Jöckel, Patrick; Nickl, Anna-Leah; Klausner, Theresa; Hase, Frank; Frey, Matthias; Chen, Jia; Dietrich, Florian; Nȩcki, Jarosław ... & Butz, André
  
• Towards verifying CH 4 emissions from hard coal mines using mobile sun-viewing Fourier transform spectrometry.
  Luther, Andreas; Kleinschek, Ralph; Scheidweiler, Leon; Defratyka, Sara; Stanisavljevic, Mila; Forstmaier, Andreas; Dandocsi, Alexandru; Wolff, Sebastian; Dubravica, Darko; Wildmann, Norman; Kostinek, Julian; Jöckel, Patrick; Nickl, Anna-Leah; Klausner, Theresa; Hase, Frank; Frey, Matthias; Chen, Jia; Dietrich, Florian; Nęcki, Jarosław ... & Butz, André
  
• “AddingTotal Column Measurements To The Boston Regional Greenhouse Gas Network”, The third CO2-USA workshop, Boston, USA, Oct. 7–8, 2019
  Jonathan Franklin, Jia Chen, Elaine Gottlieb, Bruce Daube, John Budney & Steve Wofsy
  
• “Analysis for Total Column CO2 and CH4 combining WRF-GHG Model with Differential Column Methodology (DCM)”, European WRF-Chem User Workshop, 7–8 May, 2019
  Xinxu Zhao, Julia Marshall, Stephan Hachinger, Christoph Gerbig & Jia Chen
  
• “Boston area EM-27 observations”, NASA Orbiting Carbon Observatory 2 (OCO-2) Science Team Meeting, validation breakout session, Boulder, USA, Oct. 22– 24, 2019
  Jonathan Franklin, Jia Chen, Elaine Gottlieb, Bruce Daube, John Budney & Steve Wofsy
  
• “First fully-automated differential column network for measuring GHG emissions tested in Munich”, Geophysical Research Abstracts of the EGU General Assembly 2019, vol. 21, EGU2019-13327, 2019
  Florian Dietrich, Jia Chen, Björn Reger, Jared Matzke, Andreas Forstmaier, Xiao Bi, Andreas Luther, Matthias Frey, Frank Hase & André Butz
  
• “Investigations of Methane Emissions from the Munich Oktoberfest 2018”, Geophysical Research Abstracts of the EGU General Assembly 2019, vol. 21, EGU2019-15485-1, 2019, Highlight Presentation
  Jia Chen, Florian Dietrich, Hossein Maazallahi, Dominik Winkler, Andreas Forstmaier, Magdalena Hofmann, Hugo Denier van der Gon & Thomas Röckmann
  
• “Methane investigations in Munich”, United Nations CCAC Methane Science Studies - Urban Measurements Workshop, Paris, France, 15 Nov., 2019
  Jia Chen & Florian Dietrich
  
• “Munich EM-27 observations”, NASA Orbiting Carbon Observatory 2 (OCO-2) Science Team Meeting, validation breakout session, Boulder, USA, Oct. 22–24, 2019
  Jia Chen & Florian Dietrich
  
• “Testing an automated enclosure system for a ground-based greenhouse gas remote sensing spectrometer; application to the validation of Sentinel-5 Precursor carbon monoxide and methane.”, Copernicus Sentinel-5 Precursor Validation Team Workshop, Rome, Italy, 11-14 Nov., 2019
  Neil Humpage, Hartmut Boesch, Florian Dietrich & Jia Chen
  
• “Testing an automated enclosure system for a ground-based greenhouse gas remote sensing spectrometer”, National Centre for Earth Obser- vation (NCEO) Annual Conference, Nottingham, England, Sept. 2–5, 2019
  Neil Humpage, Hartmut Boesch, Florian Dietrich & Jia Chen
  
• ”Differential column network in Munich for greenhousegas monitoring”, 1st ICOS workshop on strategies to monitor greenhouse gases in urban environments, Helsinki / Hyytiälä, Finland, July 1–4, 2019
  Jia Chen & Florian Dietrich
  
• ”Erste Münchner Treibhausgas-Emissionszahlen unter Verwendung des differentiellen Säulennetzwerks”, 54. Messtechnisches Kolloquium, Lübeck, Germany, 2019
  Jia Chen & Florian Dietrich
  
• ”Expanding the Boston Region Carbon Monitoring System: The Addition of Total Column Observations of Greenhouse Gases”, American Geophysical Union (AGU) fall meeting, B33A-07, San Francisco, USA, 9–13 Dec., 2019
  Jonathan Franklin, Jia Chen, Steven Wofsy, Thomas Nehrkorn, Lucy Hutyra, Conor Gately & Maryann Sargent
  
• ”Gas leak detection and methane source attribution with a portable Battery-powered Cavity Ring-Down Spectrometer”, Industrial Methane Measurement Conference 2019, Rotterdam, The Netherlands, June 8–9, 2019
  Renato Winkler, Iva Urbanova, Vladimir Onderka, Florian Dietrich, Jia Chen, Hossein Maazallahi, Magdalena Hofmann, Frantisek Moulis, Martin Chladil, Thomas Roeckmann & Hugo Denier van der Gon
  
• Anthropogenic CO2 emissions assessment of Nile Delta using XCO2 and SIF data from OCO-2 satellite. Environmental Research Letters, 15(9), 095010.
  Shekhar, Ankit; Chen, Jia; Paetzold, Johannes C.; Dietrich, Florian; Zhao, Xinxu; Bhattacharjee, Shrutilipi; Ruisinger, Veronika & Wofsy, Steven C.
  
• Capturing the Impact of the 2018 European Drought and Heat across Different Vegetation Types Using OCO-2 Solar-Induced Fluorescence. Remote Sensing, 12(19), 3249.
  Shekhar, Ankit; Chen, Jia; Bhattacharjee, Shrutilipi; Buras, Allan; Castro, Antony Oswaldo; Zang, Christian S. & Rammig, Anja
  
• Forecasting Interannual Space-based CO2 Concentration using Geostatistical Mapping Approach. 2020 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT), 1-6. IEEE.
  Bhattacharjee, Shrutilipi; Dill, Katharina & Chen, Jia
  
• Greenhouse gas column observations from a portable spectrometer in tropical Africa, ICOS Science conference 2020, 15-17 September, 2020
  Neil Humpage,Hartmut Boesch,William Okello,Florian Dietrich,Jia Chen,Mark Lunt,Liang Feng & Paul Palmer
  
• Greenhouse Gas Emission Estimate Using a Fully-automated Permanent Sensor Network in Munich.
  Dietrich, Florian; Chen, Jia; Voggenreiter, Benno & Zhao, Xinxu
  
• Intercomparison of atmospheric CO 2 and CH 4 abundances on regional scales in boreal areas using Copernicus Atmosphere Monitoring Service (CAMS) analysis, COllaborative Carbon Column Observing Network (COCCON) spectrometers, and Sentinel-5 Precursor satellite observations. Atmospheric Measurement Techniques, 13(9), 4751-4771.
  Tu, Qiansi; Hase, Frank; Blumenstock, Thomas; Kivi, Rigel; Heikkinen, Pauli; Sha, Mahesh Kumar; Raffalski, Uwe; Landgraf, Jochen; Lorente, Alba; Borsdorff, Tobias; Chen, Huilin; Dietrich, Florian & Chen, Jia
  
• Kriging-based Mapping of Space-borne CO2 Measurements by Combining Emission Inventory and Atmospheric Transport Modeling.
  Bhattacharjee, Shrutilipi; Chen, Jia; Jindun, Li & Zhao, Xinxu
  
• Low-Cost Air Quality Sensor Network in Munich.
  Zollitsch, Daniel; Chen, Jia; Dietrich, Florian; Voggenreiter, Benno; Setili, Luca & Wenig, Mark
  
• Mapping of Eucalyptus in Natura 2000 Areas Using Sentinel 2 Imagery and Artificial Neural Networks. Remote Sensing, 12(14), 2176.
  Forstmaier, Andreas; Shekhar, Ankit & Chen, Jia
  
• Measuring Spatial and Temporal Patterns of Urban NO2 Concentrations by combining mobile and stationary DOAS instruments.
  Wenig, Mark; Zhu, Ying; Ye, Sheng; Chan, Ka Lok; Chen, Jia; Dietrich, Florian; Bi, Xiao & Kuhlmann, Gerrit
  
• Methane Emission Source Attribution and Quantification for Munich Oktoberfest.
  Chen, Jia; Dietrich, Florian; Lober, Sebastian; Krämer, Konstantin; Legget, Graham; Denier van der Gon, Hugo; Velzeboer, Ilona; van der Veen, Carina & Röckmann, Thomas
  
• Methane emissions from the Munich Oktoberfest. Atmospheric Chemistry and Physics, 20(6), 3683-3696.
  Chen, Jia; Dietrich, Florian; Maazallahi, Hossein; Forstmaier, Andreas; Winkler, Dominik; Hofmann, Magdalena E. G.; Denier, van der Gon Hugo & Röckmann, Thomas
  
• Prediction of Satellite-Based Column CO2 Concentration by Combining Emission Inventory and LULC Information. IEEE Transactions on Geoscience and Remote Sensing, 58(12), 8285-8300.
  Bhattacharjee, Shrutilipi & Chen, Jia
  
• Spatial and temporal representativeness of point measurements for nitrogen dioxide pollution levels in cities. Atmospheric Chemistry and Physics, 20(21), 13241-13251.
  Zhu, Ying; Chen, Jia; Bi, Xiao; Kuhlmann, Gerrit; Chan, Ka Lok; Dietrich, Florian; Brunner, Dominik; Ye, Sheng & Wenig, Mark
  
• ”A semi‐operational near‐real‐ time Modelling Infrastructure for assessing GHG emissions in Munich using WRF-GHG”, Geophysical Research Abstracts of the EGU General Assembly 2020, EGU2020‐13164, 2020
  Xinxu Zhao, Jia Chen, Julia Marshall, Michal Galkowski, Christoph Gerbig, Stephan Hachinger, Florian Dietrich, Lijuan Lan, Christoph Knote & Hugo Denier van der Gon
  
• ”Constraining inversions of rural and urban CO2 fluxes using EM27/SUN XCO2 measurements”, American Geophysical Union (AGU) fall meeting, A128-04, 2020
  Yang Li, Joshua Simon Benmergui, Jonathan E. Franklin, Apisada Chulakadabba, Maryann Sargent, Lucy R. Hutyra, Conor K. Gately, Jia Chen, Steven C. Wofsy & Taylor Jones
  
• ”Expanding the Boston Region Carbon Monitoring System: First 18 Months of Regular Total-Column Observations”, American Meteorological Society (AMS) Annual Meeting, Boston, USA, 10–14 Jan., 2020
  Jonathan E Franklin, Jia Chen, Elaine Gottlieb, John Budney, Bruce Daube & Steve C. Wofsy
  
• ”FullyAutomatedPermanentSensorNetwork in Munich for GHG Satellite Validation”, the 16th International Workshop on Greenhouse Gas Measurements from Space, 2–5 June, 2020
  Florian Dietrich,Jia Chen,Matthäus Kiel & Greg Osterman
  
• ”Greenhouse gas column observations from a portable spectrometer in tropical Africa”, The 16th International Workshop on Greenhouse Gas Measurements from Space, 2–5 June, 2020
  Neil Humpage, Hartmut Boesch, William Okello, Florian Dietrich, Jia Chen, Mark Lunt, Liang Feng & Paul Palmer
  
• ”Ground-basedRemoteSensing”, WorldMeteorologicalOrganization IG3IS workshop ”Towards an International standard for Urban GHG Monitoring and assessment”, June 2020
  Jia Chen & Florian Dietrich
  
• ”Permanent Urban Column Network for Carbon Emission Monitoring in Munich”, American Geophysical Union (AGU) fall meeting, B108‐0024, 2020
  Jia Chen, Florian Dietrich, Adrian Wenzel, Nico Nachtigall, Andreas Forstmaier, Friedrich Klappenbach, Xinxu Zhao, Taylor Jones & Jonathan Franklin
  
• ”Satellite validation and urban emission assessment using the Munich permanent urban GHG column observing network”, NASA OCO- 3/OCO-2 validation group meeting, October 2020 (invited)
  Jia Chen, Florian Dietrich, Matthäus Kiel & Gregory Osterman
  
• ”The Boston regional greenhouse gas network”, NASA OCO-2/3 science team meeting, October 2020
  Jonathan Franklin,Elaine Gottlieb,Bruce Daube,John Budney,J. William Munger,Maryann Sargent, Yang Li, Ju Chulakadabba, Steve Wofsy, Taylor Jones, Lucy Hutyra, Coner Gately & Jia Chen
  
• Assessing urban methane emissions using column-observing portable Fourier transform infrared (FTIR) spectrometers and a novel Bayesian inversion framework. Atmospheric Chemistry and Physics, 21(17), 13131-13147.
  Jones, Taylor S.; Franklin, Jonathan E.; Chen, Jia; Dietrich, Florian; Hajny, Kristian D.; Paetzold, Johannes C.; Wenzel, Adrian; Gately, Conor; Gottlieb, Elaine; Parker, Harrison; Dubey, Manvendra; Hase, Frank; Shepson, Paul B.; Mielke, Levi H. & Wofsy, Steven C.
  
• Computational Fluid Dynamics Model to Simulate Methane Dispersion at Oktoberfest.
  Lober, Sebastian; Dietrich, Florian & Chen, Jia
  
• Error assessment of traffic emission estimates using novel mobility datasets.
  Gensheimer, Johannes; Turner, Alexander J.; Shekhar, Ankit; Wenzel, Adrian; Keutsch, Frank N. & Chen, Jia
  
• Errors and uncertainties associated with mobility and traffic activity data for estimating fossil fuel CO2 emissions during the COVID-19 pandemic, IGAC Scientific Conference, Sept. 12 - 20, 2021
  Tomohiro Oda, Johannes Gensheimer, Chihiro Haga, Kotaro Hosomi, Takanori Matsui, Rostyslav Bun, Alexander J. Turner, Ankit Shekhar, Frank N. Keutsch & Jia Chen
  
• Estimating coal mine methane emissions using ground-based FTIR spectrometry, WRF driven Lagrangian dispersion modelling, and a regularized inversion approach.
  Luther, Andreas; Kleinschek, Ralph; Kostinek, Julian; Stanisavljevic, Mila; Dandocsi, Alexandru; Forstmaier, Andreas; Defratyka, Sara; Scheidweiler, Leon; Wildmann, Norman; Dubravica, Darko; Hase, Frank; Frey, Matthias; Chen, Jia; Dietrich, Florian; Knote, Christoph; Nęcki, Jarosław; Roiger, Anke & Butz, André
  
• FTS Open Path Measurements Around Munich, OSA Optical Sensors and Sensing Congress, July 2021
  Jia Chen
  
• Greenhouse gas column observations from a portable spectrometer in Uganda.
  Humpage, Neil; Boesch, Hartmut; Okello, William; Dietrich, Florian; Chen, Jia; Lunt, Mark; Feng, Liang; Palmer, Paul & Hase, Frank
  
• Greenhouse gas column observations from an EM27/SUN portable spectrometer in Uganda, the 17th International Workshop on Greenhouse Gas Measurements from Space, June 14 - 17, 2021.
  Neil Humpage,Hartmut Boesch,William Okello,Florian Dietrich,Jia Chen,Mark Lunt,Liang Feng, Paul Palmer & Frank Hase
  
• Impacts of COVID-19 lockdown restrictions on urban NO2 and O3 level in Germany with consideration of meteorological impacts and seasonal variation.
  Balamurugan, Vigneshkumar; Bi, Xiao; Gensheimer, Johannes; Chen, Jia; Keutsch, Frank; Bhattacharjee, Shrutilipi & Shekhar, Ankit
  
• Introducing the Vienna Urban Carbon Laboratory (VUCL).
  Matthews, Bradley; Watzinger, Andrea; Chen, Jia; Schume, Helmut; Sanden, Hans; Dietrich, Florian & Leitner, Simon
  
• Methane emission estimate using ground based remote sensing in complex terrain.
  Klappenbach, Friedrich; Chen, Jia; Wenzel, Adri; Forstmaier, Andreas; Dietrich, Florian; Zhao, Xinxu; Jones, Taylor; Franklin, Jonathan; Wofsy, Steven; Frey, Matthias; Hase, Frank; Hedelius, Jacob; Wennberg, Paul; Cohen, Ronald & Fischer, Marc
  
• MUCCnet: Munich Urban Carbon Column network. Atmospheric Measurement Techniques, 14(2), 1111-1126.
  Dietrich, Florian; Chen, Jia; Voggenreiter, Benno; Aigner, Patrick; Nachtigall, Nico & Reger, Björn
  
• Permanent urban carbon observations provided by the Munich Urban Carbon Column network (MUCCnet), Annual TCCON/COCCON virtual meeting, June 8-10, 2021
  Florian Dietrich, Jia Chen, Adrian Wenzel, Friedrich Klappenbach,Xinxu Zhao, Andreas Forstmaier, Magdalena Altmann, Nico Nachtigall, Benno Voggenreiter, Patrick Aigner & Björn Reger
  
• Quantifying the impact of urban greenhouse gas emissions for Munich during the COVID-19 pandemic using WRF V3.9.1.1.
  Zhao, Xinxu; Chen, Jia; Marshall, Julia; Galkowski, Michal; Gerbig, Christoph; Hachinger, Stephan; Gensheimer, Johannes; Guo, Xiaotian; Dietrich, Florian; Wenzel, Adrian & Klappenbach, Friedrich
  
• Stand-alone low-cost sensor network in the inner city of Munich for modeling urban air pollutants.
  Wenzel, Adrian; Chen, Jia; Dietrich, Florian; Thekkekara, Sebastian T.; Zollitsch, Daniel; Voggenreiter, Benno; Setili, Luca; Wenig, Mark & Keutsch, Frank N.
  
• Tropospheric NO 2 and O 3 Response to COVID‐19 Lockdown Restrictions at the National and Urban Scales in Germany. Journal of Geophysical Research: Atmospheres, 126(19).
  Balamurugan, Vigneshkumar; Chen, Jia; Qu, Zhen; Bi, Xiao; Gensheimer, Johannes; Shekhar, Ankit; Bhattacharjee, Shrutilipi & Keutsch, Frank N.
  
• Urban emission estimates and validation of satellite-measured urban GHG concentration gradients using MUCCnet data (Munich Urban Carbon Column network), the 17th International Workshop on Greenhouse Gas Measurements from Space, June 14 - 17, 2021
  Florian Dietrich, Jia Chen, Adrian Wenzel, Maximilian Rißmann, Andreas Forstmaier, Friedrich Klappenbach, Xinxu Zhao, Taylor Jones, Jonathan Franklin, Matthäus Kiel & Greg Osterman
  
• Urban methane emission estimate using measurements obtained by MUCCnet (Munich Urban Carbon Column network).
  Dietrich, Florian; Chen, Jia; Wenzel, Adrian; Forstmaier, Andreas; Klappenbach, Friedrich; Zhao, Xinxu; Nachtigall, Nico; Altmann, Magdalena; Paetzold, Johannes C.; Jones, Taylor; Franklin, Jonathan; Luther, Andreas; Kleinscheck, Ralph; Butz, Andre & Hase, Frank
  
• Using ground-based mobile measurements to monitor urban methane emissions across twelve cities in eight countries, WMO GAW Symposium 2021, June 28 - July 2, 2021
  F. Vogel, A. Ars, D. Wunch, H. Maazallahi, T. Roeckmann, J. Necki, J. Bartyzel, P. Jagoda, D. Lowry, J. France, J. Fernandez, H. Chen, C. Yver-Kwok, S. Defratyka, JA. Morgui, F. Dietrich, J. Chen, H. Denier van der Gon, S.N.C. Dellaert ... & M. Demeter
  
• Using the COllaborative Carbon Column Observing Network for validating space borne GHG sensors, the 17th International Workshop on Greenhouse Gas Measurements from Space, June 14 - 17, 2021.
  M. Sha, B. Langerock, M. Kiel, D. Dubravica, F. Hase, T. Borsdorff, A. Lorente, M. De Mazière, C. Alberti, S. Ars, C. A. Bauer Aquino, B. C. Baier, D. Balis, C. Bes, E. Blandin, T. Blumenstock, H. Boesch, A. Butz, J. Chen, C. Crevoisier, A. et al.
  
• What Are the Different Measures of Mobility Telling Us About Surface Transportation CO 2 Emissions During the COVID‐19 Pandemic?. Journal of Geophysical Research: Atmospheres, 126(11).
  Gensheimer, Johannes; Chen, Jia; Turner, Alexander J.; Shekhar, Ankit; Wenzel, Adrian & Keutsch, Frank N.
  
• A convolutional neural network for spatial downscaling of satellite-based solar-induced chlorophyll fluorescence (SIFnet). Biogeosciences, 19(6), 1777-1793.
  Gensheimer, Johannes; Turner, Alexander J.; Köhler, Philipp; Frankenberg, Christian & Chen, Jia
  
• Comparison of a downscaled emission inventory from national-scale data and a newly developed city-scale bottom-up inventory for Munich towards a better understanding of local characteristics, ICOS Science Conference 2022, Utrecht, the Netherlands, 13-15 September 2022
  Patrick Aigner, Ingrid Super, Daniel Kühbacher, Arjan M. Droste, Hugo A. C. Denier van der Gon & Jia Chen
  
• Comparison of OCO-2 target observations to MUCCnet – is it possible to capture urban X CO 2 gradients from space?. Atmospheric Measurement Techniques, 15(22), 6605-6623.
  Rißmann, Maximilian; Chen, Jia; Osterman, Gregory; Zhao, Xinxu; Dietrich, Florian; Makowski, Moritz; Hase, Frank & Kiel, Matthäus
  
• Diel and seasonal variation in the carbon isotope composition of atmospheric CO2 in Vienna, Joint European Stable Isotope Users group Meeting, Kuopio Finland, 10-14 October 2022
  Kathiravan Meeran, Bradley Matthews, Simon Leitner, Hans Sanden, Jia Chen & Andrea Watzinger
  
• Ground- based mobile measurements to track urban methane emissions from natural gas in twelve cities across eight countries, ICOS Science Conference 2022, Utrecht, the Netherlands, 13-15 September 2022
  Felix Vogel, Sebastien Ars, Debra Wunch, Juliette Lavoie, Rica Christina Cruz, Hossein Maazallahi, Thomas Roeckmann, Jaroslaw Necki, Jaroslaw Bartyzel, Pawel Jagoda, Dave Lowry, James France, Julianne Fernandez, Semra Bakkaloglu, Rebecca Fisher, Mathias Lanoiselle, Huilin Chen, Martijn Oudshoorn, Camille Yver-Kwok ... & Alexandru Tudor
  
• Improved calibration procedures for the EM27/SUN spectrometers of the COllaborative Carbon Column Observing Network (COCCON). Atmospheric Measurement Techniques, 15(8), 2433-2463.
  Alberti, Carlos; Hase, Frank; Frey, Matthias; Dubravica, Darko; Blumenstock, Thomas; Dehn, Angelika; Castracane, Paolo; Surawicz, Gregor; Harig, Roland; Baier, Bianca C.; Bès, Caroline; Bi, Jianrong; Boesch, Hartmut; Butz, André; Cai, Zhaonan; Chen, Jia; Crowell, Sean M.; Deutscher, Nicholas M.; Ene, Dragos ... & Orphal, Johannes
  
• Integrated Measurements and Modeling Approach for Greenhouse Gas Emission Monitoring, ICOS Science Conference 2022, Utrecht, the Netherlands, 13-15 September 2022
  Jia Chen, Adrian Wenzel, Florian Dietrich, Patrick Aigner, Xinxu Zhao, Johannes Gensheimer, Andreas Luther, Moritz Makowski, Andreas Forstmaier, Friedrich Klappenbach & Taylor Jones
  
• Mapping the spatial distribution of NO 2 with in situ and remote sensing instruments during the Munich NO 2 imaging campaign. Atmospheric Measurement Techniques, 15(6), 1609-1629.
  Kuhlmann, Gerrit; Chan, Ka Lok; Donner, Sebastian; Zhu, Ying; Schwaerzel, Marc; Dörner, Steffen; Chen, Jia; Hueni, Andreas; Nguyen, Duc Hai; Damm, Alexander; Schütt, Annette; Dietrich, Florian; Brunner, Dominik; Liu, Cheng; Buchmann, Brigitte; Wagner, Thomas & Wenig, Mark
  
• Multi-scale measurements combined with inverse modeling for assessing methane emissions of Hamburg.
  Chen, Jia; Dietrich, Florian; Forstmaier, Andreas; Bettinelli, Juan; Maazallahi, Hossein; Schneider, Carsten; Röckmann, Thomas; Winkler, Dominik; Zhao, Xinxu; Makowski, Moritz; Klappenbach, Friedrich; van der Veen, Carina; Wildmann, Norman; Jones, Taylor; Ament, Felix; Lange, Ingo; Denier van der Gon, Hugo & Schwietzke, Stefan
  
• Novel methane emission estimation method for ground based remote sensing networks.
  Klappenbach, Friedrich; Chen, Jia; Wenzel, Adrian; Dietrich, Florian; Forstermeier, Andreas; Zhao, Xinxu; Jones, Taylor; Franklin, Jonathan; Wofsy, Steven; Frey, Matthias; Hase, Frank; Hedelius, Jacob; Wennberg, Paul & Cohen, Ronald
  
• Observational constraints on methane emissions from Polish coal mines using a ground-based remote sensing network. Atmospheric Chemistry and Physics, 22(9), 5859-5876.
  Luther, Andreas; Kostinek, Julian; Kleinschek, Ralph; Defratyka, Sara; Stanisavljević, Mila; Forstmaier, Andreas; Dandocsi, Alexandru; Scheidweiler, Leon; Dubravica, Darko; Wildmann, Norman; Hase, Frank; Frey, Matthias M.; Chen, Jia; Dietrich, Florian; Nȩcki, Jarosław; Swolkień, Justyna; Knote, Christoph; Vardag, Sanam N.; Roiger, Anke & Butz, André
  
• Quantifying CH4 emissions from coal-mine ventilation in the Upper Silesian Coal Basin (Poland) using COCCON spectrometers.
  Luther, Andreas; Kostinek, Julian; Kleinschek, Ralph; Defratyka, Sara; Stanisavljevic, Mila; Forstmaier, Andreas; Dandocsi, Alexandru; Scheidweiler, Leon; Dubravica, Darko; Wildmann, Norman; Hase, Frank; Frey, Matthias M.; Chen, Jia; Dietrich, Florian; Necki, Jaroslaw; Swolkien, Justyna; Knote, Christoph; Vardag, Sanam N.; Roiger, Anke & Butz, André
  
• Recovery of sparse urban greenhouse gas emissions. Geoscientific Model Development, 15(20), 7533-7556.
  Zanger, Benjamin; Chen, Jia; Sun, Man & Dietrich, Florian
  
• Reduction in NOX emissions during the COVID-19 lockdown did not result in a comparable reduction in secondary PM levels.
  Balamurugan, Vigneshkumar; Chen, Jia; Qu, Zhen; Bi, Xiao & Keutsch, Frank N.
  
• Secondary PM 2.5 decreases significantly less than NO 2 emission reductions during COVID lockdown in Germany. Atmospheric Chemistry and Physics, 22(11), 7105-7129.
  Balamurugan, Vigneshkumar; Chen, Jia; Qu, Zhen; Bi, Xiao & Keutsch, Frank N.
  
• Sensing and Modeling of Greenhouse Gases and Air Pollutants in Urban Environments, International Conference Society and Sustainability, Bucharest, Romania, 5-7 May 2022
  Chen, J.
  
• Stacked ResNet-LSTM and CORAL model for multi-site air quality prediction. Neural Computing and Applications, 34(16), 13849-13866.
  Cheng, Xiangwei; Zhang, Wenwen; Wenzel, Adrian & Chen, Jia
  
• Bottom-up estimation of traffic emissions in Munich based on macroscopic traffic simulation and counting data.
  Kühbacher, Daniel; Aigner, Patrick; Super, Ingrid; Droste, Arjan; Denier, van der Gon Hugo; Ilic, Mario & Chen, Jia
  
• Climate Impact Comparison of Electric and Gas‐Powered End‐User Appliances. Earth's Future, 11(2).
  Dietrich, Florian; Chen, Jia; Shekhar, Ankit; Lober, Sebastian; Krämer, Konstantin; Leggett, Graham; van der Veen, Carina; Velzeboer, Ilona; Denier, van der Gon, Hugo & Röckmann, Thomas
  
• CO2 bottom-up emission inventory based on municipal power generation and heating data in Munich.
  Aigner, Patrick; Suhendra, Michael; Yirtar, Beyza; Kühbacher, Daniel; Super, Ingrid; Droste, Arjan; Denier van der Gon, Hugo; Brunner, Dominik; Kohlmeier, Helmut; Althammer, Thomas & Chen, Jia
  
• Development, intercomparison and analysis of city emission inventories in support of independent verification of city greenhouse gas budgets.
  Denier, van der Gon Hugo; Dröge, Rianne; Super, Ingrid; Droste, Arjan; Brunner, Dominik; Suter, Ivo; Constantin, Lionel; Perrussel, Olivier; Sanchez, Olivier; Chen, Jia; Aigner, Patrick & Kühbacher, Daniel
  
• Greenhouse gas column observations from a portable spectrometer in Uganda.
  Humpage, Neil; Boesch, Hartmut; Okello, William; Chen, Jia; Dietrich, Florian; Lunt, Mark F.; Feng, Liang; Palmer, Paul I. & Hase, Frank
  
• ICOS pilot observatories to monitor greenhouse gas emissions from three different-size European cities.
  Christen, Andreas; Emmenegger, Lukas; Hammer, Samuel; Kutsch, Werner; D.’Onofrio, Claudio; Chen, Jia; Eritt, Markus; Haeffelin, Martial; Järvi, Leena; Kljun, Natascha; Lauvaux, Thomas; Loubet, Benjamin; Mauder, Matthias; Mensah, Amewu A.; Papale, Dario; Rivier, Leonard; Stagakis, Stavros & Vermeulen, Alex
  
• Modelling of near-surface NO2 and O3 concentration over Germany using machine learning.
  Balamurugan, Vigneshkumar; Chen, Jia; Wenzel, Adrian & Keutsch, Frank N.
  
• MUCCnet visiting Vienna: refining inverse model prior information with tall-tower flux measurements.
  Luther, Andreas; Forstmaier, Andreas; Tang, Haoyue; Bettinelli, Juan; Ghaith, Gamal; Aigner, Patrick; Makowski, Moritz; Fasano, Enrichetta; Meeran, Kathiravan M.; Leitner, Simon; Watzinger, Andrea; Matthews, Bradley & Chen, Jia
  
• Novel Sensor Networks and Methods for Urban Greenhouse Gas Monitoring, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-17536
  Chen,J.,Wenzel,A.,Luther,A.,Forstmaier,A.,Aigner,P.,Balamurugan,V.,Dietrich,F.,Kühbacher, D., Makowski, M., Tang, H., Zhao, X., Klappenbach, F., Maazallahi, H., Roeckmann, T., Denier van der Gon, H., Jones, T. & Matthews, B.
  
• Pyra: Automated EM27/SUN Greenhouse Gas Measurement Software. Journal of Open Source Software, 8(84), 5131.
  Aigner, Patrick; Makowski, Moritz; Luther, Andreas; Dietrich, Florian & Chen, Jia
  
• Quantification of methane emissions in Hamburg using a network of FTIR spectrometers and an inverse modeling approach. Atmospheric Chemistry and Physics, 23(12), 6897-6922.
  Forstmaier, Andreas; Chen, Jia; Dietrich, Florian; Bettinelli, Juan; Maazallahi, Hossein; Schneider, Carsten; Winkler, Dominik; Zhao, Xinxu; Jones, Taylor; van der Veen, Carina; Wildmann, Norman; Makowski, Moritz; Uzun, Aydin; Klappenbach, Friedrich; Denier, van der Gon, Hugo; Schwietzke, Stefan & Röckmann, Thomas
  
• Tall tower measurements with laser isotope spectrometry to investigate urban CO2 emissions in Vienna.
  Meeran, Kathiravan; Matthews, Bradley; Leitner, Simon; Sanden, Hans; Chen, Jia & Watzinger, Andrea
  
• Understanding greenhouse gas (GHG) column concentrations in Munich using the Weather Research and Forecasting (WRF) model. Atmospheric Chemistry and Physics, 23(22), 14325-14347.
  Zhao, Xinxu; Chen, Jia; Marshall, Julia; Gałkowski​​​​​​​, Michal; Hachinger, Stephan; Dietrich, Florian; Shekhar, Ankit; Gensheimer, Johannes; Wenzel, Adrian & Gerbig, Christoph
  
• Using tall tower flux measurements for GHG emissions monitoring in cities: Emerging results and perspectives from the Vienna Urban Carbon Laboratory.
  Matthews, Bradley; Fasano, Enrichetta; Meeran, Kathiravan; Luther, Andreas; Leitner, Simon; Sanden, Hans; Vuolo, Francesco; Schume, Helmut; Watzinger, Andrea & Chen, Jia
  
• Using a portable FTIR spectrometer to evaluate the consistency of TCCON measurements on a global scale: The COCCON Travel Standard.
  Herkommer, Benedikt; Alberti, Carlos; Castracane, Paolo; Chen, Jia; Dehn, Angelika; Dietrich, Florian; Deutscher, Nicholas M.; Frey, Matthias Max; Groß, Jochen; Gillespie, Lawson; Hase, Frank; Morino, Isamu; Pak, Nasrin Mostafavi; Walker, Brittany & Wunch, Debra