Validation of methane and carbon monoxide from Sentinel-5 Precursor using TCCON and NDACC-IRWG stations
Journal article, 2021
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.
Author
Mahesh Kumar Sha
Belgian Institute for Space Aeronomy (BIRA-IASB)
Bavo Langerock
Belgian Institute for Space Aeronomy (BIRA-IASB)
Jean-Francois L. Blavier
California Institute of Technology (Caltech)
Thomas Blumenstock
Karlsruhe Institute of Technology (KIT)
Tobias Borsdorff
Netherlands Institute for Space Research (SRON)
Matthias Buschmann
Universität Bremen
Angelika Dehn
European Space Agency (ESA)
Martine De Maziere
Belgian Institute for Space Aeronomy (BIRA-IASB)
Nicholas M. Deutscher
University of Wollongong
Dietrich G. Feist
Ludwig Maximilian University of Munich (LMU)
German Aerospace Center (DLR)
Max Planck Society
Omaira E. Garcia
Meteorological State Agency of Spain (AEMET)
David W. T. Griffith
University of Wollongong
Michel Grutter
Universidad Nacional Autónoma de México
James W. Hannigan
National Center for Atmospheric Research
Frank Hase
Karlsruhe Institute of Technology (KIT)
Pauli Heikkinen
Finnish Meteorological Institute (FMI)
Christian Hermans
Belgian Institute for Space Aeronomy (BIRA-IASB)
Laura T. Iraci
NASA Ames Research Center
Pascal Jeseck
Université Paris PSL
Nicholas Jones
Belgian Institute for Space Aeronomy (BIRA-IASB)
University of Wollongong
Rigel Kivi
Finnish Meteorological Institute (FMI)
Jochen Landgraf
Netherlands Institute for Space Research (SRON)
Alba Lorente
Netherlands Institute for Space Research (SRON)
Emmanuel Mahieu
University of Liège
Maria V. Makarova
Saint Petersburg State University - Spsu
Johan Mellqvist
Chalmers, Space, Earth and Environment, Microwave and Optical Remote Sensing
Jean-Marc Metzger
Université de La Réunion
Isamu Morino
National Institute for Environmental Studies of Japan
Tomoo Nagahama
Nagoya University
Justus Notholt
Universität Bremen
Hirofumi Ohyama
National Institute for Environmental Studies of Japan
Ivan Ortega
National Center for Atmospheric Research
Mathias Palm
Universität Bremen
Christof Petri
Universität Bremen
David F. Pollard
National Institute of Water and Atmospheric Research (NIWA)
Markus Rettinger
Karlsruhe Institute of Technology (KIT)
John Robinson
National Institute of Water and Atmospheric Research (NIWA)
Sebastien Roche
University of Toronto
Coleen M. Roehl
California Institute of Technology (Caltech)
Amelie N. Roehling
Karlsruhe Institute of Technology (KIT)
Matthias Schneider
Cyprus Institute
Karlsruhe Institute of Technology (KIT)
Kei Shiomi
Japan Aerospace Exploration Agency (JAXA)
Dan Smale
National Institute of Water and Atmospheric Research (NIWA)
Wolfgang Stremme
Universidad Nacional Autónoma de México
Kimberly Strong
University of Toronto
Ralf Sussmann
Karlsruhe Institute of Technology (KIT)
Yao Te
Université Paris PSL
Osamu Uchino
National Institute for Environmental Studies of Japan
Voltaire A. Velazco
University of Wollongong
Corinne Vigouroux
Belgian Institute for Space Aeronomy (BIRA-IASB)
Mihalis Vrekoussis
Universität Bremen
Cyprus Institute
Pucai Wang
Chinese Academy of Sciences
Thorsten Warneke
Universität Bremen
Tyler Wizenberg
University of Toronto
Debra Wunch
University of Toronto
Shoma Yamanouchi
University of Toronto
Yang Yang
Shanghai Ecological Forecasting and Remote Sensing Center
Belgian Institute for Space Aeronomy (BIRA-IASB)
Chinese Academy of Sciences
Minqiang Zhou
Belgian Institute for Space Aeronomy (BIRA-IASB)
Atmospheric Measurement Techniques
1867-1381 (ISSN) 1867-8548 (eISSN)
Vol. 14 9 6249-6304Subject Categories
Meteorology and Atmospheric Sciences
Physical Geography
Geosciences, Multidisciplinary
DOI
10.5194/amt-14-6249-2021