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Retrievals of formaldehyde from ground-based FTIR and MAX-DOAS observations at the Jungfraujoch station and comparisons with GEOS-Chem and IMAGES model simulations
Franco, Bruno; Hendrick, François; Van Roozendael, Michel et al.
2014NORS/NDACC/GAW workshop
 

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Keywords :
formaldehyde (HCHO); Fourier transform infrared spectroscopy; UV-visible MAX-DOAS
Abstract :
[en] As a ubiquitous product of the oxidation of many Volatile Organic Compounds (VOCs), formaldehyde (HCHO) plays a key role as a short-lived and reactive intermediate in the atmospheric photo-oxidation pathways leading to the formation of tropospheric ozone and secondary organic aerosols. We have successfully retrieved HCHO columns from ground-based Fourier Transform Infrared (FTIR) solar spectra and UV-Visible Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) scans recorded during the July 2010 – December 2012 time period at the Jungfraujoch station (Swiss Alps, 46.5 °N, 8.0 °E, 3580 m a.s.l.). Characterization of the retrieved products has revealed different vertical sensitivity between both remote sensing techniques. Furthermore, HCHO amounts simulated by two state-of-the-art Chemical Transport Models (CTMs), GEOS-Chem and IMAGESv2, have been compared to FTIR total columns and MAX-DOAS 3.6 – 8 km partial columns, accounting for the respective vertical resolution of each ground-based instrument. Using the CTMs outputs as intermediate, FTIR and MAX-DOAS retrievals have shown consistent seasonal modulations of HCHO throughout the investigated period, characterized by summertime maximum and wintertime minimum. Such comparisons have also highlighted that FTIR and MAX-DOAS provide complementary products for HCHO above the Jungfraujoch station.
Disciplines :
Space science, astronomy & astrophysics
Earth sciences & physical geography
Author, co-author :
Franco, Bruno ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Hendrick, François;  Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Van Roozendael, Michel;  Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Müller, Jean-François;  Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Stavrakou, Trisevgeni;  Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Marais, Eloise;  School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
Bovy, Benoît ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Bader, Whitney ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Fayt, Caroline;  Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Hermans, Christian;  Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Lejeune, Bernard ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Pinardi, Gaia;  Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Servais, Christian ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Mahieu, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
More authors (4 more) Less
Language :
English
Title :
Retrievals of formaldehyde from ground-based FTIR and MAX-DOAS observations at the Jungfraujoch station and comparisons with GEOS-Chem and IMAGES model simulations
Publication date :
07 November 2014
Event name :
NORS/NDACC/GAW workshop
Event organizer :
Belgian Institute for Space Aeronomy (BIRA-IASB)
Event place :
Brussels, Belgium
Event date :
5 - 7 november 2014
Audience :
International
European Projects :
FP7 - 284421 - NORS - Demonstration Network Of ground-based Remote Sensing Observations in support of the GMES Atmospheric Service
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
NORS project
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
CE - Commission Européenne [BE]
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since 18 November 2014

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