# Global and regional methane budget and its inter-annual variability

Zakia Bourakkadi, Sébastien Payan, Robin Locatelli, Frédéric Chevallier,

Marielle Saunois, Philippe Bousquet

► To cite this version:

Zakia Bourakkadi, Sébastien Payan, Robin Locatelli, Frédéric Chevallier, Marielle Saunois, et al. Global and regional methane budget and its inter-annual variability. European Geosciences Union General Assembly 2016, Apr 2016, Vienna, Austria. pp.EGU2016-7947-1. insu-01300691

HAL Id: insu-01300691

https://insu.hal.science/insu-01300691

Submitted on 1 Mar 2022

HAL is a multi-disciplinary open access
archive for the deposit and dissemination of sci-
entific research documents, whether they are pub-
lished or not. The documents may come from
teaching and research institutions in France or
abroad, or from public or private research centers.

L'archive ouverte pluridisciplinaire HAL, est
destinée au dépôt et à la diffusion de documents
scientifiques de niveau recherche, publiés ou non,
émanant des établissements d'enseignement et de
recherche français ou étrangers, des laboratoires
publics ou privés.

<figure><img src="image_1.png" /></figure>

Distributed under a Creative Commons Attribution 4.0 International License
<figure><img src="image_2.png" /></figure>

# Global and regional methane budget and its inter-annual variability

Zakia Bourakkadi (1), Sébastien Payan (1), Robin Locatelli (2), Frederic Chevallier (2), Marielle Saunois (2), and Philippe Bousquet (2)

(1) LATMOS, Paris, France (zakia.bourakkadi@latmos.ipsl.fr), (2) Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France

Methane global concentration has more than doubled since the pre-industrial times. This increase is generally caused by the anthropogenic activities like the massive use and extraction of fossil fuel, rice paddies agriculture and emissions from landfills.

Space observations are very useful to monitor and quantify methane concentration in the atmosphere, in order to improve our knowledge of its sources, sinks, transport and trends.

Since 2002 global methane total-columns mixing ratios from the SCanning Imaging Absorption spectroMeter for Atmospheric ChartographY (SCIAMACHY) on board ENVISAT was the first space-borne sensitive to methane in the boundary layer. However the communication with the instrument was lost in April 2012.

Since January 2009 methane columns retrievals have been available also from the Thermal And Near Infrared Sensor for carbon Observations-Fourier Transform Spectrometer (TANSO-FTS), on-board the GOSAT satellite.
In this study, we used measurements in the short wave infrared radiation (SWIR) from TANSO-FTS covering 5 years, from January 2010 to December 2014 to estimate global methane fluxes by inverse modeling, using the PYVAR-LMDZ model. We present here the results of global and regional methane budget, and its inter-annual variability during this period.