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Atmospheric content of the most abundant of 12CH4 isotopologues from ground-based and satellite infrared solar observations and development of a methane isotopic GEOS-Chem module.

Total Cost €


EC-Contrib. €






 ISOMET project word cloud

Explore the words cloud of the ISOMET project. It provides you a very rough idea of what is the project "ISOMET" about.

seasonal    resolution    12ch4    radiative    chem    quantified    species    depleted    plays    1750    greenhouse    toronto    13ch4    retrieve    heavy    ch4    act    parallel    rates    question    constraints    fourier    fifth    forcing    broad    ground    transform    spatial    isotopologue    gas    methane    collected    cycle    concentrations    hemispheric    tracers    source    strategy    ace    retrieval    arctic    chemistry    emitted    satellite    global    gases    applicable    climate    infrared    absolute    solar    contributed    responsible    alps    sources    isotopic    chemical    air    swiss    atmospheric    instrument    eureka    ch3d    2005    linked    observations    newly    fts    detection    ndacc    first    isotopologues    sink    model    emission    network    topical    mapping    exploited    match    anthropogenic    spectra    quality    module    trend    portable    carbon    dioxide    geos    regional    human    vertical    composition    sites    spectrometer    later    ratios    jungfraujoch    complementary    abundance    budget    answer    additional    simulation    transport    budgets    experiment    canada    coverage   

Project "ISOMET" data sheet

The following table provides information about the project.


Organization address
address: PLACE DU 20 AOUT 7
city: LIEGE
postcode: 4000

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Belgium [BE]
 Project website
 Total cost 165˙211 €
 EC max contribution 165˙211 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-GF
 Starting year 2016
 Duration (year-month-day) from 2016-10-01   to  2018-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITE DE LIEGE BE (LIEGE) coordinator 165˙211.00


 Project objective

Atmospheric methane (CH4), the second most important anthropogenic greenhouse gas after carbon dioxide, contributed to one-fifth of the increase in radiative forcing by human-linked greenhouse gases since 1750. The recent increase of its abundance since 2005 is not fully understood and the changes in the source(s) or sink(s) responsible for it have yet to be identified and quantified. The main isotopologues of 12CH4, i.e. 13CH4 and CH3D or heavy methane, are emitted with different isotopic ratios specific to emission sources and are depleted at different rates. Thus, they act as unique tracers and can provide additional constraints on the regional, hemispheric and global methane budgets. Since no ground-based infrared solar observations have been exploited thus far to retrieve heavy methane concentrations, the first objective is to develop a retrieval strategy for these species from observations collected at three complementary sites member of the Network for Detection of Atmospheric Composition Change (NDACC): Eureka (Arctic, Canada), Jungfraujoch (Swiss Alps) and Toronto (ON, Canada); later applicable to the whole network. Satellite observations from the Atmospheric Chemistry Experiment-Fourier Transform Spectrometer (ACE-FTS) providing high vertical resolution and broad spatial coverage will also be included as well as spectra from a portable instrument to match future requirements of methane mapping. The proposed project will also include the development of a methane isotopic module for the chemical transport model GEOS-Chem built on the isotopologue properties. The simulation will be compared with produced and available observations and will be evaluated in terms of absolute value, seasonal cycle and trend in parallel with observations. This newly developed module will allow us to provide a spatially global answer to the question of the methane budget. This project thus plays a key role in the highly topical issues of air quality and climate change.


year authors and title journal last update
List of publications.
2017 Kevin S. Olsen, Kimberly Strong, Kaley A. Walker, Chris D. Boone, Piera Raspollini, Johannes Plieninger, Whitney Bader, Stephanie Conway, Michel Grutter, James W. Hannigan, Frank Hase, Nicholas Jones, Martine de Mazière, Justus Notholt, Matthias Schneider, Dan Smale, Ralf Sussmann, Naoko Saitoh
Comparison of the GOSAT TANSO-FTS TIR CH volume mixing ratio vertical profiles with those measured by ACE-FTS, ESA MIPAS, IMK-IAA MIPAS, and 16 NDACC stations
published pages: 3697-3718, ISSN: 1867-8548, DOI: 10.5194/amt-10-3697-2017
Atmospheric Measurement Techniques 10/10 2019-07-25
2017 Whitney Bader, Benoît Bovy, Stephanie Conway, Kimberly Strong, Dan Smale, Alexander J. Turner, Thomas Blumenstock, Chris Boone, Martine Collaud Coen, Ancelin Coulon, Omaira Garcia, David W. T. Griffith, Frank Hase, Petra Hausmann, Nicholas Jones, Paul Krummel, Isao Murata, Isamu Morino, Hideaki Nakajima, Simon O'Doherty, Clare Paton-Walsh, John Robinson, Rodrigue Sandrin, Matthias Schneider, Christian Servais, Ralf Sussmann, Emmanuel Mahieu
The recent increase of atmospheric methane from 10 years of ground-based NDACC FTIR observations since 2005
published pages: 2255-2277, ISSN: 1680-7324, DOI: 10.5194/acp-17-2255-2017
Atmospheric Chemistry and Physics 17/3 2019-07-25
2017 Mahieu, Emmanuel; Bader, Whitney; Bovy, Benoît; Demoulin, Philippe; Flock, Olivier; Franco, Bruno; Lejeune, Bernard; Prignon, Maxime; Roland, G; Servais, Christian
Surveillance de l\'atmosphère terrestre depuis la station du Jungfraujoch : une épopée liégeoise entamée voici plus de 65 ans !
published pages: 119-130, ISSN: 0583-8622, DOI:
Surveillance de l\'atmosphère terrestre depuis la station du Jungfraujoch : une épopée liégeoise entamée voici plus de 65 ans ! Bulletin de la Société Géographique de Liège, 68, 119--130.Liège, BelgiumSociété Géographique de Liège. (2017). Hommage au Professeur Michel Er 2019-07-25
2018 Minqiang Zhou, Bavo Langerock, Corinne Vigouroux, Mahesh Kumar Sha, Michel Ramonet, Marc Delmotte, Emmanuel Mahieu, Whitney Bader, Christian Hermans, Nicolas Kumps, Jean-Marc Metzger, Valentin Duflot, Zhiting Wang, Mathias Palm, Martine De Mazière
Atmospheric CO and CH<sub>4</sub> time series and seasonal variations on Reunion Island from ground-based in situ and FTIR (NDACC and TCCON) measurements
published pages: 13881-13901, ISSN: 1680-7324, DOI: 10.5194/acp-18-13881-2018
Atmospheric Chemistry and Physics 18/19 2019-07-25
2017 Bader, Whitney Strong, Kimberley Walker, Kaley Buzan, Eric
First retrievals of methane isotopologues from FTIR ground-basedobservations
published pages: EGU2017-10344, ISSN: , DOI:
Geophysical Research Abstracts Vol. 19 2019-07-25

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