Johan Mellqvist
Biträdande professor vid
Chalmers, Rymd-, geo- och miljövetenskap, Mikrovågs- och optisk fjärranalys
My research involves developing and using optical remote sensing methods and other state of the art measurement techniques to improve the understanding of various environmental problems. The work includes developing and applying strategies to measure gaseous emissions from various sources such as ships, airplanes, industrial gas leaks agricultural activities and volcanoes. It also includes long term monitoring and interpretation of the abundance of various species in the atmosphere. In particular the research can be divided into four areas that will be described during the talk, i.e. a) Atmospheric studies using ground based high resolution FTIR of the sun, b) Mobile FTIR measurements of the sun to obtain fluxes c) Mobile UV/visible measurements and d) Ship emission measurements.
Källa: orcid.org
Visar 57 publikationer
2017
Fixed remote surveillance of fuel sulfur content in ships from fixed sites in the Göteborg ship channel and Öresund bridge
Johan Mellqvist, Alexander Vladimir Conde Jacobo, Jörg Beecken et al
Rapport
2017
Certification of an aircraft and airborne surveillance of fuel sulfur content in ships at the SECA border
Johan Mellqvist, Alexander Vladimir Conde Jacobo, Jörg Beecken et al
Rapport
2017
Surveillance of Sulfur Emissions from Ships in Danish Waters
Johan Mellqvist, Jörg Beecken, Alexander Vladimir Conde Jacobo et al
Rapport
2016
Quantification of stack emissions from marine vessels
Johan Mellqvist, Jörg Beecken, Johan Ekholm et al
Air and Waste Management Association - Air Quality Measurement Methods and Technology Conference 2016, p. 416-421
Paper i proceeding
2016
Quantification of Gas Emissions from Refineries, Gas Stations, Oil Wells and Agriculture using Optical Solar Occultation Flux and Tracer Correlation Methods
Johan Mellqvist, Jerker Samuelsson, Marianne Ericsson et al
AGU Fall meeting San Francisco Dec 2016 (A13N-02)
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2016
Photochemical Smog in China: Scientific challenges and implications for air quality policies
Mattias Hallquist, John Munthe, Min Hu et al
National Science Review. Vol. 3 (4), p. 401-403
Artikel i vetenskaplig tidskrift
2016
Quantification of Gaseous Emissions from Gas Stations, Oil Wells and Agriculture using Optical Solar Occultation Flux and Tracer Correlation Methods
Johan Mellqvist, Jerker Samuelsson, Marianne Ericsson et al
A&WMA’s 109th Annual Conference & Exhibition, New Orleans, Louisiana, June 2016
Paper i proceeding
2016
Remote Quantification of Stack Emissions from Marine Vessels
Johan Mellqvist, Jörg Beecken, Johan Ekholm et al
A&WMA’s 109th Annual Conference & Exhibition, New Orleans, Louisiana, June 2016. Vol. 1, p. 579-583
Paper i proceeding
2016
Using Solar Occultation Flux and Other Optical Remote Sensing Techniques to Fully Characterize and Quantify Fugitive Emissions from refineries and oil depots
Johan Mellqvist, Jerker Samuelsson, Marianne Ericsson et al
A&WMA’s 109th Annual Conference & Exhibition, New Orleans, Louisiana, June 2016 (# 948)
Paper i proceeding
2015
Quantification of VOC emissions using tracer dispersion, Mobile Extractive FTIR (MEFTIR) and Mobile Whitecell-DOAS (MWDOAS)
Jerker Samuelsson, Johan Mellqvist, Brian Offerle et al
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. Vol. 3, p. 2310-2317
Paper i proceeding
2015
Emission factors of SO2, NOx and particles from ships in Neva Bay from ground-based and helicopter-borne measurements and AIS-based modeling
Jörg Beecken, Johan Mellqvist, Kent Salo et al
Atmospheric Chemistry and Physics. Vol. 15 (9), p. 5229-5241
Artikel i vetenskaplig tidskrift
2015
Trends of ozone total columns and vertical distribution from FTIR observations at eight NDACC stations around the globe
C. Vigouroux, T. Blumenstock, M. Coffey et al
Atmospheric Chemistry and Physics. Vol. 15 (6), p. 2915-2933
Artikel i vetenskaplig tidskrift
2015
Measurements of fugitive emissions using the solar occultation flux method
Johan Mellqvist, J. Samuelsson
108th Air and Waste Management Association Annual Conference and Exhibition - Connecting the Dots: Environmental Quality to Climate, ACE 2015, Raleigh, United States, 22-25 June 2015. Vol. 1, p. 742-748
Paper i proceeding
2014
Airborne emission measurements of SO2, NOx and particles from individual ships using a sniffer technique
Jörg Beecken, Johan Mellqvist, Kent Salo et al
Atmospheric Measurement Techniques. Vol. 7 (7), p. 1957-1968
Artikel i vetenskaplig tidskrift
2014
Measurements of fugitive emission using the Solar Occultation Flux (SOF) method
M. Ericsson, Johan Mellqvist, J. Samuelsson
Air Quality Measurement Methods and Technology Conference 2013; Sacramento, CA; United States; 19 November 2013 through 21 November 2013, p. 457-460
Paper i proceeding
2014
Field test of available methods to measure remotely SOx and NOx emissions from ships
J. M. B. Loov, B. Alfoldy, L. F. L. Gast et al
Atmospheric Measurement Techniques. Vol. 7 (8), p. 2597-2613
Artikel i vetenskaplig tidskrift
2014
Identification of Gross Polluting Ships to Promote a Level Playing Field within the Shipping Sector
Johan Mellqvist, Johan Ekholm, Kent Salo et al
Rapport
2014
Quantitative measurements and modeling of industrial formaldehyde emissions in the Greater Houston area during campaigns in 2009 and 2011
John Johansson, Johan Mellqvist, Jerker Samuelsson et al
Journal of Geophysical Research. Vol. 119 (7), p. 4303-4322
Artikel i vetenskaplig tidskrift
2014
Emission measurements of alkenes, alkanes, SO2, and NO2 from stationary sources in Southeast Texas over a 5 year period using SOF and mobile DOAS
John Johansson, Johan Mellqvist, Jerker Samuelsson et al
Journal of Geophysical Research. Vol. 119 (4), p. 1973-1991
Artikel i vetenskaplig tidskrift
2013
Measurements of air pollution emission factors for marine transportation in SECA
B. Alföldy, J.B. Lööv, F. Lagler et al
Atmospheric Measurement Techniques. Vol. 6 (7), p. 1777-1791
Artikel i vetenskaplig tidskrift
2012
Ship emissions of SO2 and NO2: DOAS measurements from airborne platforms
Niklas Berg, Johan Mellqvist, J. P. Jalkanen et al
Atmospheric Measurement Techniques. Vol. 5 (5), p. 1085-1098
Artikel i vetenskaplig tidskrift
2012
Primary and secondary sources of formaldehyde in urban atmospheres: Houston Texas region
D. D. Parrish, T. B. Ryerson, Johan Mellqvist et al
Atmospheric Chemistry and Physics. Vol. 12 (7), p. 3273-3288
Artikel i vetenskaplig tidskrift
2012
Quantifying industrial emissions by measuring infrared intensity of solar spectra - the SOF technique
Jerker Samuelsson, Johan Mellqvist
Solid-State and Organic Lighting, SOLED 2012, Eindhoven, Netherlands, 11-14 November 2012
Paper i proceeding
2011
Evaluations of NOx and highly reactive VOC emission inventories in Texas and their implications for ozone plume simulations during the Texas Air Quality Study 2006
S. W. Kim, S. A. McKeen, G. J. Frost et al
Atmospheric Chemistry and Physics. Vol. 11 (22), p. 11361-11386
Artikel i vetenskaplig tidskrift
2011
A new method to detect long term trends of methane (CH4) and nitrous oxide (N2O) total columns measured within the NDACC ground-based high resolution solar FTIR network
Jon Angelbratt, Johan Mellqvist, T. Blumenstock et al
Atmospheric Chemistry and Physics. Vol. 11 (13), p. 6167-6183
Artikel i vetenskaplig tidskrift
2011
Carbon monoxide (CO) and ethane (C2H6) trends from ground-based solar FTIR measurements at six European stations, comparison and sensitivity analysis with the EMEP model
Jon Angelbratt, Johan Mellqvist, David Simpson et al
Atmospheric Chemistry and Physics. Vol. 11 (17), p. 9253-9269
Artikel i vetenskaplig tidskrift
2010
Measurements of industrial emissions of alkenes in Texas using the solar occultation flux method
Johan Mellqvist, Jerker Samuelsson, John Johansson et al
Journal of Geophysical Research. Vol. 115
Artikel i vetenskaplig tidskrift
2010
Validation of five years (2003-2007) of SCIAMACHY CO total column measurements using ground-based spectrometer observations
A. T. J. de Laat, A. M. S. Gloudemans, H. Schrijver et al
Atmospheric Measurement Techniques. Vol. 3 (5), p. 1457-1471
Artikel i vetenskaplig tidskrift
2010
Quantification of NO2 and SO2 emissions from the Houston Ship Channel and Texas City industrial areas during the 2006 Texas Air Quality Study
Claudia Rivera, Johan Mellqvist, Jerker Samuelsson et al
Journal of Geophysical Research. Vol. 115
Artikel i vetenskaplig tidskrift
2009
Airborne Measurements of Ethene from Industrial Sources Using Laser Photo-Acoustic Spectroscopy
J. A. De Gouw, S. T. L. Hekkert, Johan Mellqvist et al
Environmental Science & Technology. Vol. 43 (7), p. 2437-2442
Artikel i vetenskaplig tidskrift
2008
Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations
C. Vigouroux, M. De Maziere, P. Demoulin et al
Atmospheric Chemistry and Physics. Vol. 8 (23), p. 6865-6886
Artikel i vetenskaplig tidskrift
2008
Trend analysis of greenhouse gases over Europe measured by a network of ground-based remote FTIR instruments
T. Gardiner, A. Forbes, M. De Maziere et al
Atmospheric Chemistry and Physics. Vol. 8 (22), p. 6719-6727
Artikel i vetenskaplig tidskrift
2008
Validation of ACE-FTS N2O measurements
K. Strong, M.A. Wolff, T.E. Kerzenmacher et al
Atmospheric Chemistry and Physics. Vol. 8, p. 4759-4786
Artikel i vetenskaplig tidskrift
2007
Validation of MIPAS ClONO2 measurements
M. Hopfner, T. von Clarmann, H. Fischer et al
Atmospheric Chemistry and Physics. Vol. 7, p. 257-281
Artikel i vetenskaplig tidskrift
2007
Modelling constraints on the emission inventory and on vertical dispersion for CO and SO2 in the Mexico City Metropolitan Area using Solar FTIR and zenith sky UV spectroscopy
B. de Foy, W. Lei, M. Zavala et al
Atmospheric Chemistry and Physics. Vol. 7, p. 781-801
Artikel i vetenskaplig tidskrift
2007
Photochemical modelling in the Po basin with focus on formaldehyde and ozone
L. Liu, F. Flatoy, C. Ordonez et al
Atmospheric Chemistry and Physics. Vol. 7, p. 121-137
Artikel i vetenskaplig tidskrift
2006
Photochemical modeling in the Po basin with focus on formaldehyde and ozone
L. Liu, F. Flatoy, C. Ordones et al
Atmospheric Chemistry and Physics Discussions. Vol. 6, p. 5057-5094
Artikel i vetenskaplig tidskrift
2006
Modelling constraints on the emission inventory and on vertical diffusion for CO and SO2 in the Mexico City Metropolitan Area using Solar FTIR and zenith UV spectroscopy
B. de Foy, W. Lei, M. Zavala et al
Atmospheric Chemistry and Physics Discussions. Vol. 6, p. 6125-6181
Artikel i vetenskaplig tidskrift
2005
Intercomparison of four different in-situ techniques for ambient formaldehyde measurements in an urban air
C. Hak, I. Pundt, S. Trick et al
Atmospheric Chemistry and Physics Discussions. Vol. 5, p. 2897-2945
Artikel i vetenskaplig tidskrift
2005
Comparisons between SCIAMACHY and ground-based FTIR data for total columns of CO, CH4, CO2 and N20
B. Dils, ? De Mazière, Johan Mellqvist
Atmospheric Chemistry and Physics Discussions. Vol. 5, p. 2677-2717
Artikel i vetenskaplig tidskrift
2005
Separation of emitted and photochemical formaldehyde in Mexico City using a statistical analysis and a new pair of gas phase tracers
A. Garcia, R. Volkamer, L. T. Molina et al
Atmospheric Chemistry and Physics Discussions. Vol. 5 (2005), p. 11583-11615
Artikel i vetenskaplig tidskrift
2004
FTIR Measurements of Stratospheric Trace Species at Harestua, Norway, during the winter 2002-2003 and Comparison with a 3-D Model
Anders Strandberg, Johan Mellqvist, A. Schultz et al
Proceedings of the Quadrennial Ozone Symposium, June 2004, Kos, Greece, ed. C. Zerefos. Vol. II, p. 612-613
Paper i proceeding
2004
A Quantitative Assessment of the 1998 Carbon Monoxide Emission Anomaly in the Northern Hemisphere Based on Total Column and Surface Concentration Measurements
L.N. Yurganov, T. Blumenstock, T. Grechko et al
Journal of Geophysical Research. Vol. 109 (15), p. D15305-
Artikel i vetenskaplig tidskrift
2004
Mobile column measurements of CO in megacities
Johan Mellqvist, Bo Galle, Jerker Samuelsson et al
Proceedings of the XVIII Quadrennial Ozone Symposium, June 2004, Kos, Greece, ed. C. Zerefos, II. ISBN/ISSN: 960-630-103-6, p. 613-
Paper i proceeding
2004
Mobile Measurements of Atmospheric CO Columns in Megacities, Using a Mid Resolution Infrared Spectrometer and a Rapid Solar Tracker
Johan Mellqvist, Bo Galle, Jerker Samuelsson et al
Proceedings of the Quadrennial Ozone Symposium, June 2004, Kos, Greece, ed. C. Zerefos. Vol. II, p. 999-1000
Paper i proceeding
2004
Increased Northern Hemispheric Carbon Monoxide Burden in the Troposphere in 2002 and 2003 Detected from the Ground and from Space
L.N. Yurganov, P. Duschatelet, A.V. Dzhola et al
Atmospheric Chemistry and Physics Discussions. Vol. 4, p. 4999-5017
Artikel i vetenskaplig tidskrift
2002
Ground-based FTIR observations of chlorine activation and ozone depletion inside the Arctic vortex during the winter of 1999/2000
Johan Mellqvist
Journal of Geophysical Research. Vol. D20 (107), p. 2156-2202
Artikel i vetenskaplig tidskrift
2001
Flare testing using the SOF method at Borealis Polyethylene in the summer of 2000
Johan Mellqvist
Rapport
1999
Application of Infrared and UV-Visible Remote Sensing Techniques for Studying the Stratosphere and for Estimating Antrophogenic Emissions
Johan Mellqvist
Doktorsavhandling
1996
DOAS for flue gas monitoring—III. In-situ monitoring of sulfur dioxide, nitrogen monoxide and ammonia
Johan Mellqvist, Håkan Axelsson, Arne Rosen
Journal of Quantitative Spectroscopy and Radiative Transfer. Vol. 56 (2), p. 225-240
Artikel i vetenskaplig tidskrift
1996
DOAS for flue gas monitoring—I. Temperature effects in the UV/visible absorption spectra of NO, NO2, SO2 and NH3
Johan Mellqvist, Arne Rosen
Journal of Quantitative Spectroscopy and Radiative Transfer. Vol. 56 (2), p. 187-208
Artikel i vetenskaplig tidskrift
1996
DOAS for flue gas monitoring—II. Deviations from the Beer-Lambert law for the UV/visible absorption spectra of NO, NO2, SO2 and NH3
Johan Mellqvist, Arne Rosen
Journal of Quantitative Spectroscopy and Radiative Transfer. Vol. 56 (2), p. 209-224
Artikel i vetenskaplig tidskrift
1995
Application of dispersive UV-visible absorption spectroscopy for in-situ detection of gaseous pollutants in flue gases
Johan Mellqvist
Licentiatavhandling
1992
Temperature dependence of the absorption spectra of nitrogen oxide, nitrogen dioxide and sulfur dioxide in the application of differential optical absorption spectroscopy
Johan Mellqvist, Arne Rosen, Håkan Axelsson
The Analyst. Vol. 117 (3), p. 417-418
Artikel i vetenskaplig tidskrift
Visar 11 forskningsprojekt
2015–2016
Rökgasutsläpp från fartyg
Johan Mellqvist
Optisk fjärranalys
Johan Ekholm
Optisk fjärranalys
Jörg Beecken
Maritim miljövetenskap
South Coast Air Quality Management
2014–2019
Fotokemisk smog i Kina: Bildning, omvandling, effekter och åtgärdsstrategier
Johan Mellqvist
Optisk fjärranalys
Vetenskapsrådet (VR)
2014–2015
Improved evaluation of SOF, mobile DOAS a during NASA Discover AQ
Johan Mellqvist
Optisk fjärranalys
The University of Texas at Austin
2014–2019
Environmental impact of low sulphur ship fuel: measurement and modelling strategies (EnviSuM)
Johan Mellqvist
Optisk fjärranalys
SI
The European Union Strategy for the Baltic Sea Region (EUSBSR) Seed Money Facility Secretariat
2014–2016
Compliance monitoring pilot for Marpol Annex VI (CompMon)
Johan Mellqvist
Optisk fjärranalys
Europeiska kommissionen (EU)
2013–2014
Quantification of industrial emissions of VOCs, NO2 and SO2 by SOF and mobile DOAS during DISCOVER AQ
Johan Mellqvist
Optisk fjärranalys
The University of Texas at Austin
2013–2013
Analysis of Solar Occultation Flux
Johan Mellqvist
Optisk fjärranalys
John Johansson
Optisk fjärranalys
The University of Texas at Austin
2012–2013
Efterutvärdering och analys av växhusgastrender ur infraröda solspektra
Johan Mellqvist
Optisk fjärranalys
Naturvårdsverket
2012–2012
Övervakning av totalkolumnen av klor och ozon vid Harestua mätstation
Johan Mellqvist
Optisk fjärranalys
Naturvårdsverket
2010–2013
BSR Innoship, Baltic Sea cooperation for reducing ship and port emissions through knowledge- and innovation-based competitiveness
Johan Mellqvist
Optisk fjärranalys
Europeiska kommissionen (EU)
Det kan finnas fler projekt där Johan Mellqvist medverkar, men du måste vara inloggad som anställd på Chalmers för att kunna se dem.