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Article Dans Une Revue Atmospheric Measurement Techniques Année : 2021

Validation of methane and carbon monoxide from Sentinel-5 Precursor using TCCON and NDACC-IRWG stations

Mahesh Kumar Sha
Bavo Langerock
  • Fonction : Auteur
Jean-François Blavier
  • Fonction : Auteur
Thomas Blumenstock
Tobias Borsdorff
Matthias Buschmann
Angelika Dehn
  • Fonction : Auteur
Martine de Mazière
  • Fonction : Auteur
Nicholas Deutscher
Dietrich Feist
Omaira García
David Griffith
Michel Grutter
James Hannigan
Frank Hase
  • Fonction : Auteur
Pauli Heikkinen
  • Fonction : Auteur
Christian Hermans
  • Fonction : Auteur
Laura Iraci
Nicholas Jones
  • Fonction : Auteur
Rigel Kivi
Nicolas Kumps
  • Fonction : Auteur
Jochen Landgraf
  • Fonction : Auteur
Alba Lorente
Emmanuel Mahieu
Maria Makarova
Johan Mellqvist
  • Fonction : Auteur
Jean-Marc Metzger
  • Fonction : Auteur
Isamu Morino
Tomoo Nagahama
Justus Notholt
Hirofumi Ohyama
Ivan Ortega
Mathias Palm
Christof Petri
David Pollard
Markus Rettinger
  • Fonction : Auteur
John Robinson
  • Fonction : Auteur
Sébastien Roche
Coleen Roehl
Amelie Röhling
Constantina Rousogenous
Matthias Schneider
Kei Shiomi
Dan Smale
Wolfgang Stremme
Kimberly Strong
Ralf Sussmann
  • Fonction : Auteur
Osamu Uchino
  • Fonction : Auteur
Voltaire Velazco
Corinne Vigouroux
  • Fonction : Auteur
Mihalis Vrekoussis
Pucai Wang
  • Fonction : Auteur
Thorsten Warneke
  • Fonction : Auteur
Tyler Wizenberg
Debra Wunch
Shoma Yamanouchi
  • Fonction : Auteur
Yang Yang
Minqiang Zhou

Résumé

The Sentinel-5 Precursor (S5P) mission with the TROPOspheric Monitoring Instrument (TROPOMI) on board has been measuring solar radiation backscattered by the Earth's atmosphere and surface since its launch on 13 October 2017. In this paper, we present for the first time the S5P operational methane (CH4) and carbon monoxide (CO) products' validation results covering a period of about 3 years using global Total Carbon Column Observing Network (TCCON) and Infrared Working Group of the Network for the Detection of Atmospheric Composition Change (NDACC-IRWG) network data, accounting for a priori alignment and smoothing uncertainties in the validation, and testing the sensitivity of validation results towards the application of advanced co-location criteria. We found that the S5P standard and bias-corrected CH4 data over land surface for the recommended quality filtering fulfil the mission requirements. The systematic difference of the bias-corrected total column-averaged dry air mole fraction of methane (XCH4) data with respect to TCCON data is -0.26±0.56 % in comparison to -0.68±0.74 % for the standard XCH4 data, with a correlation of 0.6 for most stations. The bias shows a seasonal dependence. We found that the S5P CO data over all surfaces for the recommended quality filtering generally fulfil the missions requirements, with a few exceptions, which are mostly due to co-location mismatches and limited availability of data. The systematic difference between the S5P total column-averaged dry air mole fraction of carbon monoxide (XCO) and the TCCON data is on average 9.22±3.45 % (standard TCCON XCO) and 2.45±3.38 % (unscaled TCCON XCO). We found that the systematic difference between the S5P CO column and NDACC CO column (excluding two outlier stations) is on average 6.5±3.54 %. We found a correlation of above 0.9 for most TCCON and NDACC stations. The study shows the high quality of S5P CH4 and CO data by validating the products against reference global TCCON and NDACC stations covering a wide range of latitudinal bands, atmospheric conditions and surface conditions.
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hal-03474773 , version 1 (13-12-2021)

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Mahesh Kumar Sha, Bavo Langerock, Jean-François Blavier, Thomas Blumenstock, Tobias Borsdorff, et al.. Validation of methane and carbon monoxide from Sentinel-5 Precursor using TCCON and NDACC-IRWG stations. Atmospheric Measurement Techniques, 2021, 14 (9), pp.6249-6304. ⟨10.5194/amt-14-6249-2021⟩. ⟨hal-03474773⟩
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