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A retrieval of xCO2 from ground-based mid-infrared NDACC solar absorpt by Rafaella Chiarella, Matthias Buschmann et al

Two global networks of ground-based Fourier transform spectrometers are measuring abundances of atmospheric trace gases that absorb in the near infrared and mid-infrared: the Network for the Detection of Atmospheric Composition Change (NDACC) and the Total Carbon Column Observing Network (TCCON). The first lacks a CO2 product; therefore, this study focuses on developing an xCO2 retrieval method for NDACC from a spectral window in the 4800cm-1 region. This retrieval will allow extending ground-based measurements back in time, which we will demonstrate with historical data available from Ny-Ålesund, Svalbard. At this site, both TCCON and NDACC measurements are routinely performed, which is an advantage for collocated comparisons. The results are compared with collocated TCCON measurements of column-averaged dry-air mole fractions of CO2 (denoted by xCO2) in Ny-Ålesund, Svalbard, and only TCCON in Burgos, Philippines. We found that it is possible to retrieve xCO2 from NDACC spectra with

Carbon column observing networkAtmospheric composition changeTotal carbon column observing network

Study on consistency of greenhouse gas concen

The Satellite Observation Center of the National Institute for Environmental Studies has been publicly providing global greenhouse gas concentrations (carbon dioxide and methane) retrieved in the cloud-free scenes by the Japanese satellites GOSAT (Greenhouse gases Observing SATellite; launched in January 2009) and GOSAT-2 (launched in October 2018). When concentration data from both satellites are used at the same time, it is important to understand in detail the extent of the differences in order to make a more correct interpretation. The research team led by Dr. YOSHIDA Yukio (Senior Researcher) and Dr. SOMEYA Yu (Senior Researcher) compared greenhouse gas concentration data obtained from each satellite using multiple methods to evaluate their quality and found that the data of both satellites are generally consistent within 1%, with slight regional differences. This result is expected to lead to further utilization of greenhouse gas concentration data obtained by the GOSAT series.

Carbon column observing networkJapan aerospace exploration agencyNational institute for environmental studiesMethod of researchMinistry of the environment japanNational instituteEnvironmental studiesGlobal observingThermal and near infrared sensorFourier transform spectrometerShort wavelength infraredNorth africaTotal carbon column observing networkColumn averaged dry air mole fractionsCarbon dioxideMethane observed

Research Compares Greenhouse Gas Levels Between GOSAT and GOSAT-2

Research Compares Greenhouse Gas Levels Between GOSAT and GOSAT-2
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Japan aerospace exploration agencyNational institute for environmental studiesCarbon column observing networkMinistry of the environment japanNational instituteEnvironmental studiesGlobal observingThermal and near infrared sensorFourier transform spectrometerShort wavelength infraredNorth africaTotal carbon column observing network

Consistency of Greenhouse Gas Measurements Examined

A new study has examined the consistency of greenhouse gas measurements from observation satellites.

Ministry of the environment japanTechnology networkNational institute for environmental studiesCarbon column observing networkJapan aerospace exploration agencyNational instituteEnvironmental studiesGlobal observingThermal and near infrared sensorFourier transform spectrometerShort wavelength infraredNorth africaTotal carbon column observing network

A Coupled CH4, CO and CO2 Simulation for Improved Chemical Source Mode by Beata Bukosa, Jenny A Fisher et al

A Coupled CH4, CO and CO2 Simulation for Improved Chemical Source Mode by Beata Bukosa, Jenny A Fisher et al
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Co formulaCarbon column observing networkAtmospheric tomography mission atomGlobal greenhouse gas reference networkGreenhouse gas reference networkTotal carbon column observing networkAtmospheric tomography mission