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 58 publikationer

2019

What explains SECA compliance: rational calculation or moral judgment?

Anu Lähteenmäki-Uutela, Johanna Yliskylä-Peuralahti, Sari Repka et al
WMU Journal of Maritime Affairs. Vol. 18 (1), p. 61-78
Artikel i vetenskaplig tidskrift
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

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
2010

IDENTIFICATION OF GROSS POLLUTING SHIPS

Johan Mellqvist, Niklas Berg
Rapport
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
2006

Method for measuring of gaseous emissions and/or flux

Bo Galle, Johan Mellqvist
Patent
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

Method for measurements of gas emission and gas flux

Bo Galle, Johan Mellqvist
Patent
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
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
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

Spara referenser

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Mendeley

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

2013–2014

IGPS plius

Johan Mellqvist Optisk fjärranalys
Göteborgs Hamn

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

Det kan finnas fler projekt där Johan Mellqvist medverkar, men du måste vara inloggad som anställd på Chalmers för att kunna se dem.