Latest Update:2025/05/29 09:21:57

UMEZAWA Taku

Researcher Name
UMEZAWA Taku
Div (Section) name/title
Earth System Division(Biogeochemical Cycle Observation Section)/Senior Researcher
Research Subject
Studies on atmospheric trace gas variations and isotope measurements
Degree(s)
Ph.D
Professional Qualification(s)
Science,Earth Science,Physics
Environmental Speciality Field
atmospheric chemistry,greenhouse gas,carbon cycle
Research Subject
  • Fiscal Year: 2024
    • 26799 : Climate Change and Air Quality Research Program
    • 26815 : Quantitative evaluation of natural and anthropogenic sinks and sources of greenhouse gases at global scale
    • 26816 : Quantitative evaluation of anthropogenic sources of SLCFs and greenhouse gases at region, country and city scale
    • 26859 : Earth System Domain: Foresight and Advanced Basic Research
    • 26912 : Developing the techniques for environmental analyses using the accelerator mass spectrometry
    • 27006 : Characterizing urban methane sources in the two Japanese megacities: Tokyo and Osaka
    • 27007 : Have the stratospheric circulation changed for the last 30 years? —Estimation from new halocarbon measurements—
    • 27103 : Development of a greenhouse gas monitoring system from city to global scales using commercial airliners
    • 27124 : Multi-platform observations of the atmospheric GHGs and SLCFs
    • 27125 : Long-term monitoring of carbon dioxide isotopes and oxygen for watching the global carbon budget
    • 27163 : Atmospheric measurements for representative estimations of methane emissions from Japanese cities
  • Fiscal Year: 2023
    • 26400 : Climate Change and Air Quality Research Program
    • 26409 : Quantitative evaluation of natural and anthropogenic sinks and sources of greenhouse gases at global scale
    • 26410 : Quantitative evaluation of anthropogenic sources of SLCFs and greenhouse gases at region, country and city scale
    • 26450 : Earth System Domain: Foresight and Advanced Basic Research
    • 26479 : Observation of the atmospheric GHGs by using ground sites and aircraft
    • 26564 : Characterizing urban methane sources in the two Japanese megacities: Tokyo and Osaka
    • 26565 : Have the stratospheric circulation changed for the last 30 years? —Estimation from new halocarbon measurements—
    • 26651 : Development of a greenhouse gas monitoring system from city to global scales using commercial airliners
  • Fiscal Year: 2022
    • 25964 : Climate Change and Air Quality Research Program
    • 25965 : Quantitative evaluation of natural and anthropogenic sinks and sources of greenhouse gases at global scale
    • 25966 : Quantitative evaluation of anthropogenic sources of SLCFs and greenhouse gases at region, country and city scale
    • 26006 : Earth System Domain: Foresight and Advanced Basic Research
    • 26067 : Source sampling and stable carbon isotope measurements from various methane source categories in South Asia and Southeast Asia
    • 26095 : Observation of the atmospheric GHGs by using ground sites and aircraft
    • 26266 : Development of a greenhouse gas monitoring system from city to global scales using commercial airliners
    • 26392 : Characterizing urban methane sources in the two Japanese megacities: Tokyo and Osaka
  • Fiscal Year: 2021
    • 25498 : Climate Change and Air Quality Research Program
    • 25506 : Quantitative evaluation of natural and anthropogenic sinks and sources of greenhouse gases at global scale
    • 25507 : Quantitative evaluation of anthropogenic sources of SLCFs and greenhouse gases at region, country and city scale
    • 25624 : Estimation of regional-global methane emissions and refinement of its estimate by GOSAT-2 and surface observations
    • 25655 : Earth System Domain: Foresight and Advanced Basic Research
    • 25819 : An integrated GHG top-down analysis for Asia using multi-species aircraft observations
    • 25856 : Source sampling and stable carbon isotope measurements from various methane source categories in South Asia and Southeast Asia
    • 25875 : Development of a greenhouse gas monitoring system from city to global scales using commercial airliners
    • 25929 : Observation of the atmospheric GHGs by using ground sites and aircraft
  • Fiscal Year: 2020
    • 25128 : Study on Multi-scale Evaluation System for GHG Variation and Mitigation
    • 25185 : Development of a novel high-precision preparation method for standard gases of atmospheric carbonyl sulfide as a new tracer for carbon cycle studies
    • 25282 : Estimation of regional-global methane emissions and refinement of its estimate by GOSAT-2 and surface observations
    • 25336 : Source sampling and stable carbon isotope measurements from various methane source categories in South Asia and Southeast Asia
    • 25373 : An integrated GHG top-down analysis for Asia using multi-species aircraft observations
    • 25412 : Long-term 3D observation of greenhouse gases by commercial airliner and its data distribution system
  • Fiscal Year: 2019
    • 24708 : Study on Multi-scale Evaluation System for GHG Variation and Mitigation
    • 24772 : Development of a monitoring and evaluation system of the methane bdget for different source categories in East Asia toward intended emission reduction
    • 24804 : Development of an integrated observation and analysis system for monitoring greenhouse gas sources and sinks
    • 24939 : Reconstruction of atmospheric variations of methane isotopes over the last 50 years using measurements of halocarbons in firn air samples
    • 24992 : Estimation of regional-global methane emissions and refinement of its estimate by GOSAT-2 and surface observations
    • 25077 : Development of a novel high-precision preparation method for standard gases of atmospheric carbonyl sulfide as a new tracer for carbon cycle studies
  • Fiscal Year: 2018
    • 24291 : Study on multi-scale evaluation system for GHG variation and mitigation
    • 24417 : Estimation of Regional-Global Methane Emissions and Refinement of Its Estimate by GOSAT-2 and Surface Observations
    • 24441 : Development of an integrated observation and analysis system for monitoring greenhouse gas sources and sinks
    • 24473 : Development of a Monitoring and Evaluation System of the Methane Budget for Different Source Categories in East Asia toward Intended Emission Reduction
    • 24478 : Reconstruction of atmospheric variations of methane isotopes over the last 50 years using measurements of halocarbons in firn air samples
  • Fiscal Year: 2017
    • 23923 : Development of a Monitoring and Evaluation System of the Methane Budget for Different Source Categories in East Asia toward Intended Emission Reduction
    • 24034 : Reconstruction of atmospheric variations of methane isotopes over the last 50 years using measurements of halocarbons in firn air samples
    • 24163 : Development of an integrated observation and analysis system for monitoring greenhouse gas sources and sinks
  • Fiscal Year: 2016
    • 23678 : Integrated observation and analysis system for early detection of carbon cycle change globally and in Asia-Pacific region
  • Fiscal Year: 2015
    • 23224 : Integrated observation and analysis system for early detection of carbon cycle change globally and in Asia-Pacific region
Research Result (Publication)
  • all
  • Original Paper
  • Other Publications
Research Result (Presentation)
  • all
  • Research Presentation
  • Research Lecture
  • Measurement data to support emission reduction actions for the Global Methane Pledge goals
    Presenter : Umezawa T., Terao Y., Ueayama M.
    Name of Society : 2024 Japan Oil & Gas Methane Workshop: Advancing Multilateral Alignment (2024)
    Name of Proceedings : -
  • Overview of the MOEJ-funded research initiative: monitoring GHGs and SLCFs for climate change mitigation
    Presenter : Niwa Y., Terao Y., Tohjima Y., Mueller A., Tanimoto H., Yamada K., Machida T., Nakaoka S., Umezawa T., Saito T., Goto D., Yashiro H., Yamashita Y., Ikeda K.
    Name of Society : 21st Tripartite Presidents Meeting among NIER, CRAES and NIES (2024)
    Name of Proceedings : Abstracts, 40-49
  • Greenhouse gases and related tracer measurements in the atmosphere over South Asia
    Presenter : Terao Y., Ahmed Md.K., Naja M., Nomura S., Umezawa T., Machida T., Mukai H., Patra P.K.
    Name of Society : International Conference on Earth and Environmental Sciences & Technology for Sustainable Development (ICEEST) 2020 (2020)
    Name of Proceedings : Abstracts, 62
  • Observation of atmospheric CH4 using aircraft platform
    Presenter : Machida T., Sasakawa M., Umezawa T., Sawa Y., Matsueda H., Niwa Y., Tsuboi K., Murayama S., Morimoto S., Aoki S.
    Name of Society : InGos International Conference (2015)
    Name of Proceedings : Abstracts