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Article Dans Une Revue Earth System Science Data Année : 2024

The Total Carbon Column Observing Network's GGG2020 data version

Joshua Laughner
Geoffrey Toon
  • Fonction : Auteur
Joseph Mendonca
  • Fonction : Auteur
Christof Petri
Sébastien Roche
Debra Wunch
Jean-Francois Blavier
  • Fonction : Auteur
David Griffith
Pauli Heikkinen
  • Fonction : Auteur
Ralph Keeling
Matthäus Kiel
Rigel Kivi
Coleen Roehl
  • Fonction : Auteur
Britton Stephens
Bianca Baier
  • Fonction : Auteur
Huilin Chen
Yonghoon Choi
Nicholas Deutscher
Joshua Digangi
Jochen Gross
  • Fonction : Auteur
Benedikt Herkommer
Pascal Jeseck
  • Fonction : Auteur
Xin Lan
Erin Mcgee
  • Fonction : Auteur
Kathryn Mckain
John Miller
Isamu Morino
Justus Notholt
  • Fonction : Auteur
Hirofumi Ohyama
David Pollard
Markus Rettinger
  • Fonction : Auteur
Haris Riris
  • Fonction : Auteur
Constantina Rousogenous
Mahesh Kumar Sha
Kei Shiomi
Kimberly Strong
Ralf Sussmann
Yao Té
Voltaire Velazco
  • Fonction : Auteur
Steven Wofsy
  • Fonction : Auteur
Minqiang Zhou
Paul Wennberg
  • Fonction : Auteur

Résumé

Abstract. The Total Carbon Column Observing Network (TCCON) measures column-average mole fractions of several greenhouse gases (GHGs), beginning in 2004, from over 30 current or past measurement sites around the world using solar absorption spectroscopy in the near-infrared (near-IR) region. TCCON GHG data have been used extensively for multiple purposes, including in studies of the carbon cycle and anthropogenic emissions, as well as to validate and improve observations from space-based sensors. Here, we describe an update to the retrieval algorithm used to process the TCCON near-IR solar spectra and to generate the associated data products. This version, called GGG2020, was initially released in April 2022. It includes updates and improvements to all steps of the retrieval, including but not limited to the conversion of the original interferograms into spectra, the spectroscopic information used in the column retrieval, post hoc air mass dependence correction, and scaling to align with the calibration scales of in situ GHG measurements. All TCCON data are available through https://tccondata.org/ (last access: 22 April 2024) and are hosted on CaltechDATA (https://data.caltech.edu/, last access: 22 April 2024). Each TCCON site has a unique DOI for its data record. An archive of all the sites' data is also available with the DOI https://doi.org/10.14291/TCCON.GGG2020 (Total Carbon Column Observing Network (TCCON) Team, 2022). The hosted files are updated approximately monthly, and TCCON sites are required to deliver data to the archive no later than 1 year after acquisition. Full details of data locations are provided in the “Code and data availability” section.
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Dates et versions

hal-04572930 , version 1 (13-05-2024)

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Joshua Laughner, Geoffrey Toon, Joseph Mendonca, Christof Petri, Sébastien Roche, et al.. The Total Carbon Column Observing Network's GGG2020 data version. Earth System Science Data, 2024, 16 (5), pp.2197-2260. ⟨10.5194/essd-16-2197-2024⟩. ⟨hal-04572930⟩
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