Article (Scientific journals)
First HFC-134a retrievals from ground-based FTIR solar absorption spectra, comparison with TOMCAT model simulations, in-situ AGAGE observations, and ACE-FTS satellite data for the Jungfraujoch station
Pardo Cantos, Irene; Mahieu, Emmanuel; Chipperfield, Martyn P. et al.
2024In Journal of Quantitative Spectroscopy and Radiative Transfer, 318, p. 108938
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Keywords :
Spectroscopy; HFC-134a; NDACC; TOMCAT/SLIMCAT; FTS; AGAGE; Trends
Abstract :
[en] Successive regulations on the production and consumption of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have led to the use of hydrofluorocarbons (HFCs) as substitution products. Consequently, these potent greenhouse gases are now controlled under the Kigali Amendment (2016) to the Montreal Protocol. HFC-134a is the preferred substitute to CFC-12 as a refrigerant and is the most abundant HFC in the atmosphere today. This work presents the first retrievals from ground-based Fourier Transform InfraRed (FTIR) high-resolution solar absorption spectra, recorded at the Jungfraujoch station as part of the Network for the Detection of Atmospheric Composition Change (NDACC). To verify these retrievals, the FTIR time series was compared to three other datasets: a simulation of the TOMCAT 3-D chemical transport model, the Fourier Transform Spectrometer on board the Atmospheric Chemistry Experiment (ACE-FTS) L2 v5.2 retrievals, and the Jungfraujoch in-situ surface observations conducted within the Advanced Global Atmospheric Gases Experiment (AGAGE) network. The overall trends of HFC-134a (2004–2022) were analyzed to assess the relative growth rates of this atmospheric compound. These trends are 7.34 ±0.16 %/year (FTIR), 7.12 ±0.05 %/year (TOMCAT), 7.29 ±0.16 %/year (ACE-FTS), and 6.61 ±0.05 %/year (in-situ). The relative trends are in good agreement, so these novel FTIR retrievals are validated. Consequently, this strategy could be implemented at other NDACC sites to achieve a quasi-global detection of this species using the FTIR remote sensing technique.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Pardo Cantos, Irene  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Mahieu, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Groupe infra-rouge de physique atmosphérique et solaire (GIRPAS)
Chipperfield, Martyn P.
Servais, Christian ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Groupe infra-rouge de physique atmosphérique et solaire (GIRPAS)
Reimann, Stefan
Vollmer, Martin K.
Language :
English
Title :
First HFC-134a retrievals from ground-based FTIR solar absorption spectra, comparison with TOMCAT model simulations, in-situ AGAGE observations, and ACE-FTS satellite data for the Jungfraujoch station
Publication date :
February 2024
Journal title :
Journal of Quantitative Spectroscopy and Radiative Transfer
ISSN :
0022-4073
Publisher :
Elsevier BV
Special issue title :
Satellite Remote Sensing: Honoring the 20th Anniversary of ACE on Orbit
Volume :
318
Pages :
108938
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 February 2024

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