Shamil Maksyutov

Shamil Maksyutov
National Institute for Environmental Studies · Earth System Division

PhD

About

404
Publications
54,392
Reads
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12,784
Citations
Introduction
Japanese Greenhouse gas observing satellite (GOSAT) observes CO2 and CH4 in atmospheric column since 2009 . We work on inverse modeling of CO2 , CH4 surface fluxes in global scale, which is made operationally as GOSAT Level 4 product, see http://www.gosat.nies.go.jp.
Additional affiliations
April 2005 - October 2021
National Institute for Environmental Studies
Position
  • Researcher
April 2000 - March 2005
Japan Agency for Marine-Earth Science Technology
Position
  • Sub-leader
Description
  • CO2 transport modeling
December 1990 - March 2000
National Institute for Environmental Studies
Position
  • Visiting researcher
Description
  • GHG observations and analysis
Education
September 1980 - August 1983
Moscow Institute of Physics and Technology
Field of study
  • chemical physics
September 1974 - June 1980
Moscow Institute of Physics and Technology
Field of study
  • physics of combustion

Publications

Publications (404)
Article
Full-text available
Information about regional carbon sources and sinks can be derived from variations in observed atmospheric CO2 concentrations via inverse modelling with atmospheric tracer transport models. A consensus has not yet been reached regarding the size and distribution of regional carbon fluxes obtained using this approach, partly owing to the use of seve...
Article
Full-text available
High-latitude wetlands are important for understanding climate change risks because these environments sink carbon dioxide and emit methane. However, fine-scale heterogeneity of wetland landscapes poses a serious challenge when generating regional-scale estimates of greenhouse gas fluxes from point observations. In order to reduce uncertainties at...
Article
Full-text available
The Open-source Data Inventory for Anthropogenic CO2 (ODIAC) is a global high-spatial-resolution gridded emissions data product that distributes carbon dioxide (CO2) emissions from fossil fuel combustion. The emissions spatial distributions are estimated at a 1 × 1 km spatial resolution over land using power plant profiles (emissions intensity and...
Article
Full-text available
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-TM) and the FLEXible PARTicle dispersion model (FLEXPART). The inversion system is named NTFVAR (NIES-TM–FLEXPA...
Article
Full-text available
We employed a global high-resolution inverse model to optimize the CH4 emission using Greenhouse gas Observing Satellite (GOSAT) and surface observation data for a period from 2011–2017 for the two main source categories of anthropogenic and natural emissions. We used the Emission Database for Global Atmospheric Research (EDGAR v4.3.2) for anthropo...
Article
We present a study on validation of the National Institute for Environmental Studies Transport Model (NIES TM) by comparing to observed vertical profiles of atmospheric CO2. The model uses a hybrid sigma-isentropic (σ−θ) vertical coordinate that employs both terrain-following and isentropic parts switched smoothly in the stratosphere. The model tra...
Preprint
Full-text available
Accurate accounting of emissions and removals of CO2 is critical for the planning and verification of emission reduction targets in support of the Paris Agreement. Here, we present a pilot dataset of country-specific net carbon exchange (NCE; fossil plus terrestrial ecosystem fluxes) and terrestrial carbon stock changes aimed at informing countries...
Preprint
Full-text available
The dramatic increase in natural gas use in China, as a substitute for coal, helps to reduce CO2 emissions and air pollution, but the climate mitigation benefit can be offset by methane leakage into the atmosphere. We estimate methane emissions from 2010-2018 in four regions of China using the GOSAT satellite data and in-situ observations with a hi...
Chapter
Due to renewed interest in emission accounting and reduction inspired by the adoption of the Paris agreement in 2015, the growth of applications of atmospheric observations and modeling to emission estimates was accompanied by a search for new methods of atmospheric observations and techniques used to estimate emissions, including new inverse model...
Article
Full-text available
The world-wide lockdown in response to the COVID-19 pandemic in year 2020 led to economic slowdown and large reduction in fossil fuel CO2 emissions, but it is unclear how much it would slow the increasing trend of atmospheric CO2 concentration, the main driver of climate change, and whether this impact can be observed in light of large biosphere an...
Article
We present the results from studying the spatio-temporal organization of southern and subtaiga and forest-steppe geosystems of regions of the South of Western Siberia, including the Irtysh, Tobol, Ishim and Tobol-Tavda interfluve area, and the southern Ural, reflecting spatio-temporal variability of landscape structure in these regions, conducted i...
Chapter
Top-down approaches reconcile fluxes of greenhouse gases with atmospheric observations and thus provide a mass-balance constraint on flux estimates derived from other methods. Atmospheric observations are made from ground-based networks, including discrete air samples and quasicontinuous in situ gas analyzers, as well as from satellite remote sensi...
Conference Paper
Full-text available
The Earth science community has been exploring the use of atmospheric observations for providing objective evaluations to National Emission Inventories (NEIs) in support of the successful implementation of the United Nations Framework Convention on Climate Change (UNFCCC). Estimating subnational emissions from country level emissions indicted by NE...
Article
Top-down modeling estimates are among the most reliable information available on the CO2 fluxes of the earth system. The inadequate coverage of CO2 observing stations over the tropical regions adds a limitation to this estimate, especially when the satellite XCO2 is strictly screened for cloud contamination, aerosol, dust, etc. In this study, we in...
Article
Full-text available
Numerous wetlands, including the world's two largest contiguous wetlands, lie along the free-flowing Paraná and Paraguay Rivers that travel the length of subtropical South America (SSA) region. These wetlands are floodplains that are inundated with rising river water in flood events; their morphology and area are highly changeable with flooding ext...
Article
Full-text available
The ongoing development of the Global Carbon Project (GCP) global methane (CH4) budget shows a continuation of increasing CH4 emissions and CH4 accumulation in the atmosphere over 2000‐2017. Here we decompose the global budget into 19 regions (18 land and one oceanic) and five key source sectors to spatially attribute the observed global trends. A...
Chapter
Nighttime lights (NTL) data are excellent indicators of the intensities of human activities. Over the past two decades, NTL data have been used to map values associated with human activities, and to study the spatial and temporal changes. Since 2012, an improved sensor, the Day/Night Band (DNB) low‐light visible sensor of the Visible Infrared Imagi...
Article
Full-text available
Ten years of Greenhouse gas Observing SATellite (GOSAT) observation achieves valuable retrievals for top-down methane (CH4) emissions estimates especially in regions lacking ground-based observations. This paper presents the long-term 2010-2017 trend in CH4 emissions in the Middle East countries. We use a global 0.1° × 0.1° high-resolution inverse...
Article
Full-text available
Regional carbon emissions impact global atmospheric carbon dioxide (CO2) background concentrations. This study quantified the enhancement in the atmospheric CO2 mole fractions due to biospheric and fossil fuel fluxes from India. Sensitivity experiments using model simulations were conducted, allowing CO2 enhancement due to biospheric and fossil fue...
Article
Full-text available
In Asia, much effort is put into reducing methane (CH4) emissions due to the region's contribution to the recent rapid global atmospheric CH4 concentration growth. Accurate quantification of Asia's CH4 budgets is critical for conducting global stocktake and achieving the long-term temperature goal of the Paris Agreement. In this study, we present t...
Preprint
Full-text available
The world-wide lockdown in response to the COVID-19 pandemic in year 2020 led to economic slowdown and large reduction of fossil fuel CO2 emissions, but it is unclear how much it would reduce atmospheric CO2 concentration, and whether it can be observed. We estimated that a 7.9% reduction in emissions for 4 months would result in a 0.25 ppm decreas...
Article
We present an algorithm for the rapid retrieval of the carbon dioxide total column amounts (XCO2) using short wave infrared (SWIR) spectra of the reflected sunlight measured from space. The algorithm takes advantage of the combined processing of observational data from two different satellite missions. For the algorithm implementation we adopted th...
Article
Full-text available
To better understand the current global CH4 budget, biogenic, fossil fuel, and biomass burning CH4 fluxes for the period 1995–2013 were inversely estimated from the observed mole fraction data of atmospheric CH4 using a three‐dimensional chemical transport model. Then, forward simulations of carbon and hydrogen isotope ratios of atmospheric CH4 (δ¹...
Article
Full-text available
Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. Atmospheric emissions and concentrations of CH4 continue to increase, making CH4 the second most important human-influenced greenhouse gas in terms of climate forcing, after carbon dioxide (CO2). The relative impor...
Article
Full-text available
Although wetlands are the largest natural source of atmospheric methane, the amount and variability of methane emissions from wetlands still have large uncertainty. We investigated the local growth rate of the column-averaged methane dry air mole fraction (XCH4) in Siberia where wetlands are widely abundant using 11-year (2009-2019) Greenhouse gase...
Article
To understand the spatio-temporal variations of the atmospheric greenhouse gases in the Arctic region, we have conducted systematic observations and numerical model simulations. Long-term observations for CO2, CH4 and related constituents at Ny-Ålesund helped in separating the oceanic and terrestrial uptake rates of CO2 and revealed the importance...
Article
Full-text available
Cities are responsible for the largest anthropogenic CO2 emissions and are key to effective emission reduction strategies. Urban CO2 emissions estimated from vertical atmospheric measurements can contribute to an independent quantification of the reporting of national emissions and will thus have political implications. We analyzed vertical atmosph...
Conference Paper
Many of the global and regional gridded emission inventories used in atmospheric modeling, especially global and regional gridded emission products, are based on downscaling techniques. Regardless of their limitations compared to locally-constructed mechanistic emission inventories, such gridded datasets will keep a key role of transferring the inf...
Conference Paper
Cities are the major source of man-made carbon dioxide (CO2) emissions. Accurately quantifying the emissions from global cities and monitoring the emission changes are critical for carbon cycle science, as well as climate mitigation under the Paris Climate Agreement. Since 2009, we have been exploring the use of satellite-observed nighttime lights...
Preprint
Full-text available
Abstract. 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 dispersion model (FLEXPART). The inversion system is named NTFVAR (NIES-TM-FLEXPART-variational) as it...
Conference Paper
Greenhouse gases (GHG) gridded products are an important tool to allow us to combine emissions estimates compiled as inventories with atmospheric modeling and objectively assess the impact of our emissions. The weakness of those emission products is the fact that subnational emissions might be biased because of the emission downscaling. Assessing t...
Conference Paper
We evaluated the methane emissions, its trends of regions and top emitting countries for 2010-2017 inferred from atmospheric observations. We used 8-year measurements of atmospheric methane columns from the GOSAT satellite and ground-based observations in a 0.1° × 0.1° high-resolution global model to evaluate the top-down methane emissions at count...
Article
Full-text available
We present a global 0.1 • × 0.1 • high-resolution inverse model, NIES-TM-FLEXPART-VAR (NTFVAR), and a methane emission evaluation using the Greenhouse Gas Observing Satellite (GOSAT) satellite and ground-based observations from 2010-2012. Prior fluxes contained two variants of anthropogenic emissions, Emissions Database for Global Atmospheric Resea...
Article
Full-text available
Interannual variations in temperature and precipitation impact the carbon balance of terrestrial ecosystems, leaving an imprint in atmospheric CO2. Quantifying the impact of climate anomalies on the net ecosystem exchange (NEE) of terrestrial ecosystems can provide a constraint to evaluate terrestrial biosphere models against and may provide an eme...
Article
Full-text available
Emission Inventories (EIs) are the fundamental tool to monitor compliance with greenhouse gas (GHGs) emissions and emission-reduction commitments. Inventory accounting guidelines provide the best practices to help EI compilers across different countries and regions make comparable, national emission estimates regardless of differences in data avail...
Chapter
Full-text available
This chapter is part of the 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories. An important goal of IPCC inventory guidance is to support the development of national greenhouse gas inventories that can be readily assessed in terms of quality. It is good practice to implement quality assurance/quality control (QA/QC...
Conference Paper
Full-text available
The Open-source Data Inventory for Anthropogenic CO2 (ODIAC) is a global, high-resolution, gridded emission product that provides CO2 emission estimates from fossil fuel combustion, cement production and gas flaring. ODIAC is based on spatial disaggregation of country-level emission estimates made by the Carbon Dioxide Information Analysis Center (...
Data
Raw data (CH4 fluxes, temp., WTL etc.) for article Highly Dynamic Methane Emission from the West Siberian Boreal Floodplains (Wetlands, 2019, V.39., No.2, pp. 217-216) in .xlsx format.
Article
Full-text available
A three-dimensional simulation of gravitational separation, defined as the process of atmospheric molecule separation under gravity according to their molar masses, is performed for the first time in the upper troposphere and lower stratosphere. We analyze distributions of two isotopes with a small difference in molecular mass (¹³C¹⁶O2 (Mi=45) and...
Article
Full-text available
NASA’s carbon dioxide mission, Orbiting Carbon Observatory-2, began operating in September 2014. In this paper, we analyze four years (2015–2018) of global (60°S–60°N) XCO2 anomalies and their annual variations and seasonal patterns. We show that the anomaly patterns in the column-averaged CO2 dry air mole fraction, XCO2, are robust and consistent...
Article
Full-text available
The Canadian Arctic (> 60∘ N, 60–141∘ W) may undergo drastic changes if the Arctic warming trend continues. For methane (CH4), Arctic reservoirs are large and widespread, and the climate feedbacks from such changes may be potentially substantial. Current bottom-up and top-down estimates of the regional CH4 flux range widely. This study analyzes the...
Conference Paper
Full-text available
Global greenhouse gases (GHG) gridded products have been and will remain an important tool to allow us to combine emissions estimates compiled as inventories with atmospheric modeling in order to objectively assess the impact of our emissions. However, the weakness of those emission products is the fact that subnational emissions are largely based...
Conference Paper
Carbon dioxide (CO2) emissions from fossil fuel combustion are the main cause of the observed, increasing atmospheric CO2 concentration. The emissions need to be closely monitored and then curved in order to keep the global temperature rise well below 2 degree Celsius above pre-industrial levels. The emissions are often quantified with reasonable a...
Article
Full-text available
Interannual variations in temperature and precipitation impact the carbon balance of terrestrial ecosystems, leaving an imprint in atmospheric CO2. Quantifying the impact of climate anomalies on the net ecosystem exchange (NEE) of terrestrial ecosystems can provide a constraint to evaluate terrestrial biosphere models against, and may provide an em...
Conference Paper
The ecosystem-atmosphere exchange of methane and carbon dioxide were measured during the summer campaigns 2014 – 2017 in Plotnikovo (N56°51’, E82°51’) on the wetland Flux-NIES automatic chamber complexes. Eleven vegetative groups on the bog’s surface and one lake site were taken in comparison. The objective of these particular measurements was to e...
Conference Paper
Emission Inventory (EI) is a fundamental tool to monitor global compliance of greenhouse gases (GHGs) emissions reduction actions. Inventory guidelines provide a best practice to help EI compilers to make comparable national emission estimates, in spite of the differences in data availability across countries and regions. There are a variety of sou...
Article
Full-text available
We estimate the overall CO2, CH4, and CO flux from the South Coast Air Basin using an inversion that couples Total Carbon Column Observing Network (TCCON) and Orbiting Carbon Observatory-2 (OCO-2) observations, with the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model and the Open-source Data Inventory for Anthropogenic CO2 (...
Article
Full-text available
We present further development of the empirical orthogonal functions (EOF)-based retrieval algorithm. The algorithm output is a regression formula that relates principal components of the reflected sunlight spectra with CO2 total column amount. The algorithm was implemented and tested for the observations from the Japanese satellite Greenhouse gase...
Article
Full-text available
The West Siberia Lowland (WSL) is one of the biggest wetland areas in high latitudes; however, measurements of gas fluxes from WSL floodplain wetlands were absent. During 2015–2016, we made first effort to estimate methane emission from floodplain using chamber method. Obtained fluxes varied greatly with medians from zero to 17.5 mgC·m⁻²·h⁻¹. We fo...
Article
Full-text available
The Canadian Arctic has the potential for enhanced atmospheric methane (CH4) source regions as a response to the ongoing global warming. Current bottom-up and top-down estimates of the regional CH4 flux range widely. This study analyses the recent observations of atmospheric CH4 from five arctic monitoring sites and presents estimates of the region...
Article
Full-text available
A three-dimensional simulation of gravitational separation, defined as the process of atmospheric molecule separation under gravity according to their molar masses, is performed for the first time in the upper troposphere and lower stratosphere. We analyze distributions of two isotopes with a small difference in molecular mass (¹³C¹⁶O2 (Mi = 45) an...
Article
Full-text available
In this paper, we developed a method on quantifying carbon dioxide (CO2) emissions from each building of Tokyo. And the method basing on bottom-up approach and supplemented with some downscaling efforts that could be applied in any other city of Japan. The high-resolution emission map is achieved by linking the national census data with spatial dat...