A machine learning method for estimating atmospheric trace gas concentration baselines
Atmospheric Measurement Techniques
Chris René Lunder
Senior Scientist
+47 936 89 471
+47 63 89 82 09
Monitoring and Instrumentation Technology
Kjeller
crl@nilu.no
Publications at NILU
Observations of 1,2-dichloroethane from the AGAGE and NOAA networks and derived global and regional emissions
Atmospheric Chemistry and Physics (ACP)
European HFC emissions evaluated with multiple atmospheric inverse models and UNFCCC national inventories
Atmospheric Chemistry and Physics (ACP)
Global Observations and European emissions of the halogenated olefins HFO-1234yf, HFO-1234ze(E), and HCFO-1233zd(E) from the AGAGE (Advanced Global Atmospheric Gases Experiment) network
Atmospheric Chemistry and Physics (ACP)
Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons
Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Tracing biomass burning aerosol from South America to Troll Research Station, Antarctica
Geophysical Research Letters
Reconciling reported and unreported HFC emissions with atmospheric observations
Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Recent Trends in Stratospheric Chlorine From Very Short-Lived Substances
Journal of Geophysical Research (JGR): Atmospheres
Perfluorocyclobutane (PFC-318, c-C4F8) in the global atmosphere
Atmospheric Chemistry and Physics (ACP)
Optimal estimation of the surface fluxes of methyl chloride using a 3-D global chemical transport model
Atmospheric Chemistry and Physics (ACP)
Long-term monitoring of persistent organic pollutants (POPs) at the Norwegian Troll station in Dronning Maud Land, Antarctica
Atmospheric Chemistry and Physics (ACP)
Increases in Global and East Asian Nitrogen Trifluoride (NF3) Emissions Inferred from Atmospheric Observations
Environmental Science and Technology
Increase in HFC-134a emissions in response to the success of the Montreal Protocol
Journal of Geophysical Research (JGR): Atmospheres
Impact of leakage during HFC-125 production on the increase in HCFC-123 and HCFC-124 emissions
Atmospheric Chemistry and Physics (ACP)
Impact of Biomass Burning on Arctic Aerosol Composition
ACS Earth and Space Chemistry
History of chemically and radiatively important atmospheric gases from the Advanced Global Atmospheric Gases Experiment (AGAGE)
Earth System Science Data
Historical greenhouse gas concentrations for climate modelling (CMIP6)
Geoscientific Model Development
HFC-43-10mee atmospheric abundances and global emission estimates
Geophysical Research Letters
Growth in stratospheric chlorine from short-lived chemicals not controlled by the Montreal Protocol
Geophysical Research Letters
Growth in Production and Environmental Deposition of Trifluoroacetic Acid Due To Long-Lived CFC Replacements and Anesthetics
Geophysical Research Letters
Growing Atmospheric Emissions of Sulfuryl Fluoride
Journal of Geophysical Research (JGR): Atmospheres
Global HCFC-22 measurements with MIPAS: retrieval, validation, global distribution and its evolution over 2005–2012.
Atmospheric Chemistry and Physics (ACP)
Global emissions of HFC-143a (CH3CF3) and HFC-32 (CH2F2) from in situ and air archive atmospheric observations
Atmospheric Chemistry and Physics (ACP)
Global emissions and abundances of chemically and radiatively important trace gases from the AGAGE network
Earth System Science Data
Global and regional emissions of HFC-125 (CHF2CF3) from in situ and air archive atmospheric observations at AGAGE and SOGE observatories
Journal of Geophysical Research (JGR): Atmospheres
Global and regional emissions estimates of 1,1-difluoroethane (HFC-152a, CH3CHF2) from in situ and air archive observations.
Atmospheric Chemistry and Physics (ACP)
Global and regional emission estimates for HCFC-22
Atmospheric Chemistry and Physics (ACP)
European emissions of the powerful greenhouse gases hydrofluorocarbons inferred from atmospheric measurements and their comparison with annual national reports to UNFCCC
Atmospheric Environment
European aerosol phenomenology − 8: Harmonised source apportionment of organic aerosol using 22 Year-long ACSM/AMS datasets
Environment International
Estimation of the atmospheric hydroxyl radical oxidative capacity using multiple hydrofluorocarbons (HFCs)
Atmospheric Chemistry and Physics (ACP)
New data sets from the global AGAGE network of abundances and emissions of chemically and radiatively important trace gases
AGU25
Investigating marine aerosol variability: a multi-site analysis using particle composition and size distribution
ACCC-FASN Science Conference
Investigating Marine Aerosol Variability and Climate Feedbacks: A Multi-Site Analysis Using Particle Composition and Size Distribution Data
European Aerosol Conference (EAC 2025)
Effect of long-range transported fire emissions on aerosol and cloud properties at high latitudes: In situ measurements and satellite observations
EGU General Assembly 2024
Slik jobber klimaforskere som detektiver
Hvordan er det å bo i Antarktis?
Trends in atmospheric CO2 and CH4 in Norway and Svalbard
ICOS Norway Annual Science Meeting and General Assembly
Trends in atmospheric CO2 and CH4 in Norway and Svalbard
Verifisering av klimagassutslipp
Status of the ICOS Norway atmosphere domain
ICOS Norway Annual Meeting
Status labelling of Birkenes Observatory
ICOS Norway Annual Science Meeting and General Assembly
RegClim. Regional climate development under global warming. Presentations from workshop 6-7 May at Kjeller, Norway
Recent European F-gas Emissions from Multiple Inverse Modelling Systems
AGU24
Overvåkning av klimagasser
Overvåkingsdagen 2022
NILU i Arktis og Antarktis
CIENS Frokostseminar
National monitoring of aerosols in Norway
WeBaSOOP annual meeting
Miljøforskning i Arktis og Antarktis
Foredrag på elevkonferanse i H2020-prosjektet ACTION
Long-term PM Chemical Composition and Organic Aerosol (OA) Sources in European Arctic, Svalbard
11th International Aerosol Conference - IAC 2022
Long-term Comparison of NOAA and AGAGE Non-CO2 Trace Gas Observations at Common Sites
AGU23
Linking aerosol size distribution and hygroscopicity to cloud droplet formation at an Arctic mountain site
EGU General Assembly 2023
Increases in global and East Asian nitrogen trifluoride (NF3) emissions inferred from atmospheric observations and GEOS-Chem
AGU24
Highlights from the latest research and monitoring activities at the Trollhaugen Observatory
Antarktisseminaret
Greenhouse gas observations in ICOS Norway and ReGAME
4th ICOS Nordic conference
Global tropospheric OH concentrations in the past four decades inferred from surface network and satellite trace gas observations
American Geophysical Union Fall Meeting
Global relevance of atmospheric observations in the Antarctica
Antarktisseminaret 2024
Development of Zeppelin and Birkenes Observatory to ICOS labelled sites
ICOS Norway and OTC Spring Seminar
Corrigendum to "Global and regional emission estimates for HCFC-22", Atmos. Chem. Phys., 12, 10033-10050, 2012
Atmospheric Chemistry and Physics (ACP)
Comparing ACSM time series with SO4 from filters and DMPS at Birkenes (Q-ASCM) and Zeppelin (ToF ACSM)
Working Group 1 Meeting for COST action COLOSSAL (Chemical on-Line composition and source apportionment of fine aerosol)
Atmospheric observations of methane at the Zeppelin Observatory, Ny Ålesund, Svalbard
SIOS funded workshop: Methane in Svalbard
Air monitoring at the Trollhaugen Observatory in Antarctica
Antarktisseminar 2020
A 16-year record of greenhouse gases and footprint attribution using the FLEXPART model at Trollhaugen Observatory, Antarctica
12th SCAR Open Science Conference
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2024. Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2023. Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2022. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2021. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2020. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2019. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2018. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2017 - Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2016 - Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2015 - Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2014 - Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2013 - Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2012 - Annual report
Hydro Aluminium AS. Measurements of CF4 and C2F6 emissions from Norsk Hydro's aluminium smelter at Husnes, Norway.
Alcoa Mosjøen. Measurements of CF4 and C2F6 emissions from Alcoa Aluminium’s smelter at Mosjøen, Norway.
Integrated Carbon Observation System (ICOS) Norway and Ocean Thematic Centre (OTC), phase 3
In ICOS-3 we will 1) maintain and expand a substantial observational network for greenhouse gases (GHG), and their fluxes, covering Norwegian atmosphere, land ecosystems, and oceans, as part of the […]
A machine learning method for estimating atmospheric trace gas concentration baselines
Atmospheric Measurement Techniques
Observations of 1,2-dichloroethane from the AGAGE and NOAA networks and derived global and regional emissions
Atmospheric Chemistry and Physics (ACP)
European HFC emissions evaluated with multiple atmospheric inverse models and UNFCCC national inventories
Atmospheric Chemistry and Physics (ACP)
Global Observations and European emissions of the halogenated olefins HFO-1234yf, HFO-1234ze(E), and HCFO-1233zd(E) from the AGAGE (Advanced Global Atmospheric Gases Experiment) network
Atmospheric Chemistry and Physics (ACP)
Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons
Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Tracing biomass burning aerosol from South America to Troll Research Station, Antarctica
Geophysical Research Letters
Reconciling reported and unreported HFC emissions with atmospheric observations
Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Recent Trends in Stratospheric Chlorine From Very Short-Lived Substances
Journal of Geophysical Research (JGR): Atmospheres
Perfluorocyclobutane (PFC-318, c-C4F8) in the global atmosphere
Atmospheric Chemistry and Physics (ACP)
Optimal estimation of the surface fluxes of methyl chloride using a 3-D global chemical transport model
Atmospheric Chemistry and Physics (ACP)
Long-term monitoring of persistent organic pollutants (POPs) at the Norwegian Troll station in Dronning Maud Land, Antarctica
Atmospheric Chemistry and Physics (ACP)
Increases in Global and East Asian Nitrogen Trifluoride (NF3) Emissions Inferred from Atmospheric Observations
Environmental Science and Technology
Increase in HFC-134a emissions in response to the success of the Montreal Protocol
Journal of Geophysical Research (JGR): Atmospheres
Impact of leakage during HFC-125 production on the increase in HCFC-123 and HCFC-124 emissions
Atmospheric Chemistry and Physics (ACP)
Impact of Biomass Burning on Arctic Aerosol Composition
ACS Earth and Space Chemistry
History of chemically and radiatively important atmospheric gases from the Advanced Global Atmospheric Gases Experiment (AGAGE)
Earth System Science Data
Historical greenhouse gas concentrations for climate modelling (CMIP6)
Geoscientific Model Development
HFC-43-10mee atmospheric abundances and global emission estimates
Geophysical Research Letters
Growth in stratospheric chlorine from short-lived chemicals not controlled by the Montreal Protocol
Geophysical Research Letters
Growth in Production and Environmental Deposition of Trifluoroacetic Acid Due To Long-Lived CFC Replacements and Anesthetics
Geophysical Research Letters
Growing Atmospheric Emissions of Sulfuryl Fluoride
Journal of Geophysical Research (JGR): Atmospheres
Global HCFC-22 measurements with MIPAS: retrieval, validation, global distribution and its evolution over 2005–2012.
Atmospheric Chemistry and Physics (ACP)
Global emissions of HFC-143a (CH3CF3) and HFC-32 (CH2F2) from in situ and air archive atmospheric observations
Atmospheric Chemistry and Physics (ACP)
Global emissions and abundances of chemically and radiatively important trace gases from the AGAGE network
Earth System Science Data
Global and regional emissions of HFC-125 (CHF2CF3) from in situ and air archive atmospheric observations at AGAGE and SOGE observatories
Journal of Geophysical Research (JGR): Atmospheres
Global and regional emissions estimates of 1,1-difluoroethane (HFC-152a, CH3CHF2) from in situ and air archive observations.
Atmospheric Chemistry and Physics (ACP)
Global and regional emission estimates for HCFC-22
Atmospheric Chemistry and Physics (ACP)
European emissions of the powerful greenhouse gases hydrofluorocarbons inferred from atmospheric measurements and their comparison with annual national reports to UNFCCC
Atmospheric Environment
European aerosol phenomenology − 8: Harmonised source apportionment of organic aerosol using 22 Year-long ACSM/AMS datasets
Environment International
Estimation of the atmospheric hydroxyl radical oxidative capacity using multiple hydrofluorocarbons (HFCs)
Atmospheric Chemistry and Physics (ACP)
New data sets from the global AGAGE network of abundances and emissions of chemically and radiatively important trace gases
AGU25
Investigating marine aerosol variability: a multi-site analysis using particle composition and size distribution
ACCC-FASN Science Conference
Investigating Marine Aerosol Variability and Climate Feedbacks: A Multi-Site Analysis Using Particle Composition and Size Distribution Data
European Aerosol Conference (EAC 2025)
Effect of long-range transported fire emissions on aerosol and cloud properties at high latitudes: In situ measurements and satellite observations
EGU General Assembly 2024
Slik jobber klimaforskere som detektiver
Hvordan er det å bo i Antarktis?
Trends in atmospheric CO2 and CH4 in Norway and Svalbard
ICOS Norway Annual Science Meeting and General Assembly
Trends in atmospheric CO2 and CH4 in Norway and Svalbard
Verifisering av klimagassutslipp
Status of the ICOS Norway atmosphere domain
ICOS Norway Annual Meeting
Status labelling of Birkenes Observatory
ICOS Norway Annual Science Meeting and General Assembly
RegClim. Regional climate development under global warming. Presentations from workshop 6-7 May at Kjeller, Norway
Recent European F-gas Emissions from Multiple Inverse Modelling Systems
AGU24
Overvåkning av klimagasser
Overvåkingsdagen 2022
NILU i Arktis og Antarktis
CIENS Frokostseminar
National monitoring of aerosols in Norway
WeBaSOOP annual meeting
Miljøforskning i Arktis og Antarktis
Foredrag på elevkonferanse i H2020-prosjektet ACTION
Long-term PM Chemical Composition and Organic Aerosol (OA) Sources in European Arctic, Svalbard
11th International Aerosol Conference - IAC 2022
Long-term Comparison of NOAA and AGAGE Non-CO2 Trace Gas Observations at Common Sites
AGU23
Linking aerosol size distribution and hygroscopicity to cloud droplet formation at an Arctic mountain site
EGU General Assembly 2023
Increases in global and East Asian nitrogen trifluoride (NF3) emissions inferred from atmospheric observations and GEOS-Chem
AGU24
Highlights from the latest research and monitoring activities at the Trollhaugen Observatory
Antarktisseminaret
Greenhouse gas observations in ICOS Norway and ReGAME
4th ICOS Nordic conference
Global tropospheric OH concentrations in the past four decades inferred from surface network and satellite trace gas observations
American Geophysical Union Fall Meeting
Global relevance of atmospheric observations in the Antarctica
Antarktisseminaret 2024
Development of Zeppelin and Birkenes Observatory to ICOS labelled sites
ICOS Norway and OTC Spring Seminar
Corrigendum to "Global and regional emission estimates for HCFC-22", Atmos. Chem. Phys., 12, 10033-10050, 2012
Atmospheric Chemistry and Physics (ACP)
Comparing ACSM time series with SO4 from filters and DMPS at Birkenes (Q-ASCM) and Zeppelin (ToF ACSM)
Working Group 1 Meeting for COST action COLOSSAL (Chemical on-Line composition and source apportionment of fine aerosol)
Atmospheric observations of methane at the Zeppelin Observatory, Ny Ålesund, Svalbard
SIOS funded workshop: Methane in Svalbard
Air monitoring at the Trollhaugen Observatory in Antarctica
Antarktisseminar 2020
A 16-year record of greenhouse gases and footprint attribution using the FLEXPART model at Trollhaugen Observatory, Antarctica
12th SCAR Open Science Conference
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2024. Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2023. Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2022. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2021. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2020. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2019. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2018. Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2017 - Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2016 - Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2015 - Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2014 - Annual report.
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2013 - Annual report
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2012 - Annual report
Hydro Aluminium AS. Measurements of CF4 and C2F6 emissions from Norsk Hydro's aluminium smelter at Husnes, Norway.
Alcoa Mosjøen. Measurements of CF4 and C2F6 emissions from Alcoa Aluminium’s smelter at Mosjøen, Norway.
Integrated Carbon Observation System (ICOS) Norway and Ocean Thematic Centre (OTC), phase 3
In ICOS-3 we will 1) maintain and expand a substantial observational network for greenhouse gases (GHG), and their fluxes, covering Norwegian atmosphere, land ecosystems, and oceans, as part of the […]