A. Ganshin
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Technical note: A high-resolution inverse modelling technique for estimating surface CO <sub>2</sub> fluxes based on the NIES-TM–FLEXPART coupled transport model and its adjoint Open
We developed a high-resolution surface flux inversion system based on the global Eulerian–Lagrangian coupled tracer transport model composed of the National Institute for Environmental Studies (NIES) transport model (TM; collectively NIES-…
Technical note: A high-resolution inverse modelling technique for estimating surface CO <sub>2</sub> fluxes based on the NIES-TM – FLEXPART coupled transport model and its adjoint Open
We developed a high-resolution surface flux inversion system based on the global Lagrangian–Eulerian coupled tracer transport model composed of National Institute for Environmental Studies Transport Model (NIES-TM) and FLEXible PARTicle di…
Reconciliation of top-down and bottom-up CO <sub>2</sub> fluxes in Siberian larch forest Open
Carbon dioxide (CO _2 ) fluxes by different methods vary largely at global, regional and local scales. The net CO _2 fluxes by three bottom-up methods (tower observation (TWR), biogeochemical models (GTM), and a data-driven model (SVR)), a…
Study of the footprints of short-term variation in XCO <sub>2</sub> observed by TCCON sites using NIES and FLEXPART atmospheric transport models Open
The Total Carbon Column Observing Network (TCCON) is a network of ground-based Fourier transform spectrometers (FTSs) that record near-infrared (NIR) spectra of the sun. From these spectra, accurate and precise observations of CO2 column-a…
A decadal inversion of CO<sub>2</sub> using the Global Eulerian–Lagrangian Coupled Atmospheric model (GELCA): sensitivity to the ground-based observation network Open
We present an assimilation system for atmospheric carbon dioxide (CO2) using a Global Eulerian-Lagrangian Coupled Atmospheric model (GELCA), and demonstrate its capability to capture the observed atmospheric CO2 mixing ratios and to estima…
Study of the footprints of short-term variation in XCO <sub>2</sub> observed by TCCON sites using NIES and FLEXPART atmospheric transport models Open
The Total Carbon Column Observing Network (TCCON) is a network of ground-based Fourier Transform Spectrometers (FTS) that record near-infrared (NIR) spectra of the Sun. From these spectra, accurate and precise observations of CO2 column-av…
Comparing GOSAT observations of localized CO<sub>2</sub> enhancements by large emitters with inventory‐based estimates Open
We employed an atmospheric transport model to attribute column‐averaged CO 2 mixing ratios ( X CO2 ) observed by Greenhouse gases Observing SATellite (GOSAT) to emissions due to large sources such as megacities and power plants. X CO2 enha…
Adjoint of the global Eulerian–Lagrangian coupled atmospheric transport model (A-GELCA v1.0): development and validation Open
We present the development of the Adjoint of the Global Eulerian–Lagrangian Coupled Atmospheric (A-GELCA) model that consists of the National Institute for Environmental Studies (NIES) model as an Eulerian three-dimensional transport model…