Y. Sawa

发表

Seasonal variations of CO2 near the tropopause observed by commercial aircraft

Y. Sawa, T. Machida, H. Matsueda, 2008 .

Validation of XCH 4 derived from SWIR spectra of GOSAT TANSO-FTS with aircraft measurement data

Tatsuya Yokota, Kazuhiro Tsuboi, Yukio Yoshida, 2014 .

Distribution of methane in the tropical upper troposphere measured by CARIBIC and CONTRAIL aircraft

Hidekazu Matsueda, Prabir K. Patra, Jos Lelieveld, 2012 .

Validation of XCO 2 derived from SWIR spectra of GOSAT TANSO-FTS with aircraft measurement data

Tatsuya Yokota, Yukio Yoshida, Shuji Kawakami, 2011 .

Tropospheric carbon monoxide and hydrogen measurements over Kalimantan in Indonesia and northern Australia during October, 1997

Y. Makino, Y. Sawa, H. Matsueda, 1999 .

The state of greenhouse gases in the atmosphere using global observations through 2018

Alex Vermeulen, E. Dlugokencky, Y. Sawa, 2009 .

A global coupled Eulerian-Lagrangian model and 1 × 1 km CO₂ surface flux dataset for high-resolution atmospheric CO₂ transport simulations

Makoto Saito, Kazuhiro Tsuboi, Andrej Varlagin, 2011 .

Formation mechanisms of latitudinal CO2 gradients in the upper troposphere over the subtropics and tropics

Y. Sawa, T. Machida, H. Matsueda, 2009 .

CO 2 column-averaged volume mixing ratio derived over Tsukuba from measurements by commercial airlines

Y. Sawa, T. Machida, H. Matsueda, 2010 .

Long‐term change of CO2 latitudinal distribution in the upper troposphere

Y. Niwa, Y. Sawa, T. Machida, 2015 .

Aircraft observation of the seasonal variation in the transport of CO2 in the upper atmosphere

Hidekazu Matsueda, Toshinobu Machida, Y. Sawa, 2012 .

Assessing Lagrangian inverse modelling of urban anthropogenic CO2 fluxes using in situ aircraft and ground-based measurements in the Tokyo area

I. Pisso, Y. Sawa, T. Machida, 2019, Carbon Balance and Management.

A 4D-Var inversion system based on the icosahedral grid model (NICAM-TM 4D-Var v1.0) - Part 1: Offline forward and adjoint transport models

Y. Niwa, N. Saigusa, Y. Sawa, 2016 .

A 4 D-Var inversion system based on the icosahedral grid model ( NICAM-TM 4 D-Var v 1 . 0 ) – Part 1 : Offline forward and adjoint transport models

Y. Niwa, N. Saigusa, Y. Sawa, 2016 .

A 4D-Var inversion system based on the icosahedral grid model (NICAM-TM 4D-Var v1.0) – Part 2: Optimization scheme and identical twin experiment of atmospheric CO 2 inversion

A. Ito, Y. Niwa, N. Saigusa, 2016 .

Number-size Distributions of Aerosol Particles in the Free Troposphere over the Northwestern Pacific Ocean—Influence of Asian Outflow and Tropical Air Transport

Y. Makino, Y. Sawa, Y. Zaizen, 2004 .

Journal of the Meteorological Society of Japan, Vol. 82, No. 4, pp. 1147--1160, 2004

Y. Makino, Y. Sawa, Y. Zaizen, 2004 .

Influence of continental air mass transport on atmospheric CO2 in the western North Pacific

Y. Sawa, H. Matsueda, A. Wada, 2007 .

Chemical and optical properties of 2003 Siberian forest fire smoke observed at the summit of Mt. Fuji, Japan

Y. Sawa, R. Höller, H. Takada, 2007 .

Atmospheric column-averaged mole fractions of carbon dioxide at 53 aircraft measurement sites

C. Sweeney, P. Tans, Y. Sawa, 2012 .

Evaluation of standards and methods for continuous measurements of carbon monoxide at ground-based sites in Asia

H. Tanimoto, Y. Sawa, H. Matsueda, 2007 .

Scale and stability of methane standard gas in JMA and comparison with MRI standard gas

Y. Niwa, Y. Sawa, H. Matsueda, 2016 .

(2012). A global coupled Eulerian-Lagrangian model and 1 × 1 km CO2 surface ux dataset for high-resolution atmospheric CO2 transport simulations. Geoscientific Model Development , 5 (1), 231-243.

Shamil Maksyutov, A. Varlagin, Y. Sawa, 2012 .

The Use of a High-Resolution Emission Data Set in a Global Eulerian-Lagrangian Coupled Model

Shamil Maksyutov, Y. Sawa, H. Matsueda, 2013 .

Seasonal variation of water-soluble ion species in the atmospheric aerosols at the summit of Mt. Fuji

K. Hayashi, Y. Sawa, N. Ogura, 2008 .

Methane standard gases for atmospheric measurements at the MRI and JMA and intercomparison experiments

Y. Sawa, H. Matsueda, A. Wada, 2004 .

New Atmospheric O2/N2 Ratio Measurements over the Western North Pacific Using a Cargo Aircraft C-130H

Y. Niwa, Y. Sawa, H. Matsueda, 2014 .

New Atmospheric O 2 / N 2 Ratio Measurements over the Western North Pacific Using a Cargo Aircraft C-130 H

Y. Niwa, Y. Sawa, H. Matsueda, 2022 .

CO2 and CH4 observations by the thermal infrared band of GOSAT/TANSO-FTS and GOSAT-1/TANSO-FTS-2

Y. Niwa, A. Tsuruta, Y. Sawa, 2018 .

Global CO 2 fluxes inferred from surface air-sample measurements and from TCCON retrievals of the CO 2 total column

D. Wunch, F. Maignan, P. Krummel, 2011 .

Three-dimensional variations of atmospheric CO 2 : aircraft measurements and multi-transport model simulations

Shamil Maksyutov, Y. Niwa, Y. Sawa, 2011 .

Carbon balance of South Asia constrained by passenger aircraft CO 2 measurements

Y. Niwa, Y. Sawa, T. Machida, 2011 .

Statistical characterization of urban CO2 emission signals observed by commercial airliner measurements

Shamil Maksyutov, Y. Niwa, K. Higuchi, 2020, Scientific Reports.

CO2 surface fluxes at grid point scale estimated from a global 21 year reanalysis of atmospheric measurements

Fabienne Maignan, Hitoshi Mukai, Hidekazu Matsueda, 2010 .

Evaluation of anthropogenic emissions of carbon monoxide in East Asia derived from the observations of atmospheric radon-222 over the western North Pacific

Y. Sawa, H. Matsueda, A. Wada, 2012 .

Seasonal variation of enhancement ratios of trace gases observed over 10 years in the western North Pacific

Y. Sawa, H. Matsueda, A. Wada, 2011 .

A comprehensive estimate of recent carbon sinks in China using both top-down and bottom-up approaches

P. Ciais, W. Ju, J. Chen, 2016, Scientific Reports.

Bias assessment of lower and middle tropospheric CO 2 concentrations of GOSAT/TANSO-FTS TIR version 1 product

Ryoichi Imasu, Kei Shiomi, Akihiko Kuze, 2017 .

Aircraft Observation of CO2, CO2 O3 and H2 over the North Pacific during the PACE-7 Campaign

Hidekazu Matsueda, Shohei Murayama, Yukio Makino, 2004 .

Atmospheric CO2 and O3 observed on Rishiri Island from December 2006 to March 2007

H. Tanimoto, Y. Sawa, H. Matsueda, 2008 .

Overview of the Atmospheric Brown Cloud East Asian Regional Experiment 2005 and a study of the aerosol direct radiative forcing in east Asia

Teruyuki Nakajima, Soon-Chang Yoon, Nobuo Sugimoto, 2007 .

Satellite-inferred European carbon sink larger than expected

Yukio Yoshida, Maximilian Reuter, Michael Buchwitz, 2014 .

Development of a balloon-borne instrument for CO2 vertical profile observations in the troposphere

Y. Sawa, T. Machida, H. Matsueda, 2019, Atmospheric Measurement Techniques.

Development of a balloon-borne instrument for CO2 vertical profile observations in the troposphere

Y. Sawa, T. Machida, H. Matsueda, 2019 .

Seasonal evaluation of tropospheric CO2 over the Asia-Pacific region observed by the CONTRAIL commercial airliner measurements

Hidekazu Matsueda, Toshinobu Machida, Yosuke Niwa, 2018, Atmospheric Chemistry and Physics.

Constraining terrestrial ecosystem CO 2 fluxes by integrating models of biogeochemistry and atmospheric transport and data of surface carbon fluxes and atmospheric CO 2 concentrations

W. Oechel, K. Bowman, Y. Sawa, 2014 .

Estimating Asian terrestrial carbon fluxes from CONTRAIL aircraft and surface CO 2 observations for the period 2006–2010

W. Peters, P. Tans, Y. Sawa, 2013 .

Aircraft measurements of carbon dioxide and methane for the calibration of ground-based high-resolution Fourier Transform Spectrometers and a comparison to GOSAT data measured over Tsukuba and Moshiri

Shuji Kawakami, Hidekazu Matsueda, Osamu Uchino, 2012 .

Anthropogenic CO 2 flux constraints in the Tokyo Bay Area from Lagrangian diffusive backward trajectories and high resolution in situ measurements

I. Pisso, Y. Sawa, T. Machida, 2012 .

Global CO2fluxes inferred from surface air‐sample measurements and from TCCON retrievals of the CO2 total column

P. Ciais, D. Wunch, S. Wofsy, 2011 .

Column‐averaged volume mixing ratio of CO2 measured with ground‐based Fourier transform spectrometer at Tsukuba

Y. Sawa, T. Machida, H. Matsueda, 2009 .

Carbon balance of China constrained by CONTRAIL aircraft CO 2 measurements

W. Ju, Y. Sawa, T. Machida, 2014 .

The 2007–2011 evolution of tropical methane in the mid-troposphere as seen from space by MetOp-A/IASI

Hidekazu Matsueda, Noelle A. Scott, Alain Chédin, 2012 .

Development of a Compact and Sensitive Electrostatic Radon-222 Measuring System for Use in Atmospheric Observation

H. Kondo, Y. Sawa, H. Matsueda, 2010 .

Temporal variations in ozone concentrations derived from Principal Component Analysis

H. Tanimoto, Y. Sawa, H. Matsueda, 2008 .

Simulation of CO2 concentrations at Tsukuba tall tower using WRF-CO2 tracer transport model

Y. Sawa, H. Matsueda, P. Patra, 2016, Journal of Earth System Science.

Bias corrections of GOSAT SWIR XCO2 and XCH4 with TCCON data and their evaluation using aircraft measurement data

Tatsuya Yokota, Kazuhiro Tsuboi, John Robinson, 2016 .

Widespread pollution events of carbon monoxide observed over the western North Pacific during the East Asian Regional Experiment (EAREX) 2005 campaign

H. Tanimoto, Y. Sawa, H. Matsueda, 2007 .

Long-range transport of carbon monoxide from tropical ground to upper troposphere: a case study for South East Asia in October 1997

Y. Sawa, H. Matsueda, H. Inoue, 2002 .

Development of a new JMA flask sampling and trace gas measuring system for observation on a cargo aircraft C-130H

Y. Niwa, Y. Sawa, H. Matsueda, 2012 .

Carbon and hydrogen isotopic ratios of atmospheric methane in the upper troposphere over the Western Pacific

Y. Sawa, T. Machida, H. Matsueda, 2012 .

Seasonal characteristics of trace gas transport into the extratropical upper troposphere and lower stratosphere

Y. Sawa, T. Machida, H. Matsueda, 2019, Atmospheric Chemistry and Physics.

Quantification of emission estimates of CO2, CH4 and CO for East Asia derived from atmospheric radon-222 measurements over the western North Pacific

Y. Niwa, H. Yamazawa, Y. Sawa, 2013 .

Vertical Diffusion Coefficient under Stable Conditions Estimated from Variations in the Near-Surface Radon Concentration

H. Kondo, Y. Sawa, H. Matsueda, 2014 .

Seasonal Variations of SF6, CO2, CH4, and N2O in the UT/LS Region due to Emissions, Transport, and Chemistry

J. S. Bisht, Y. Niwa, Y. Sawa, 2021, Journal of Geophysical Research: Atmospheres.

Algorithm update of the GOSAT/TANSO-FTS thermal infrared CO 2 product (version 1) and validation of the UTLS CO 2 data using CONTRAIL measurements

Ryoichi Imasu, Kei Shiomi, Akihiko Kuze, 2016 .

the Creative Commons Attribution 3.0 License. Atmospheric Chemistry and Physics

Kazuhiro Tsuboi, Hitoshi Mukai, Hidekazu Matsueda, 2008 .

The seasonal variation of the CO2 flux over Tropical Asia estimated from GOSAT, CONTRAIL, and IASI

O. Hasekamp, I. Aben, C. Frankenberg, 2014 .

Seasonal Variations of CO 2 , CH 4 , N 2 O and CO in the Mid-Troposphere over the Western North Pacific Observed Using a C-130 H Cargo Aircraft

Y. Niwa, Y. Sawa, T. Machida, 2014 .

Seasonal Variations of CO2, CH4, N2O and CO in the Mid-Troposphere over the Western North Pacific Observed Using a C-130H Cargo Aircraft

Y. Niwa, Y. Sawa, T. Machida, 2014 .

Significant latitudinal gradient in the surface ozone spring maximum over East Asia

H. Tanimoto, Y. Sawa, H. Matsueda, 2005 .

Estimation of fire-induced carbon emissions from Equatorial Asia in 2015 using in situ aircraft and ship observations

A. Ito, Y. Niwa, H. Tanimoto, 2021, Atmospheric Chemistry and Physics.

Seasonal changes of CO2, CH4, N2O, and SF6 in the upper troposphere/lower stratosphere over the Eurasian continent observed by commercial airliner

Y. Niwa, Y. Sawa, T. Machida, 2015 .

Evaluation of a new JMA aircraft flask sampling system and laboratory trace gas analysis system

Y. Niwa, Y. Sawa, H. Matsueda, 2013 .

Estimation of fire-induced carbon emission from Equatorial Asia in 2015 by using in situ aircraft and ship observations

A. Ito, Y. Niwa, H. Tanimoto, 2020 .

Comparisons between XCH4 from GOSAT Shortwave and Thermal Infrared Spectra and Aircraft CH4 Measurements over Guam

Tatsuya Yokota, Ryoichi Imasu, Kei Shiomi, 2012 .

Aircraft measurements of ozone, NOx, CO, and aerosol concentrations in biomass burning smoke over Indonesia and Australia in October 1997: Depleted ozone layer at low altitude over Indonesia

Y. Makino, Y. Sawa, J. Jensen, 1999 .

Evaluation of atmospheric CO2 measurements from new flask air sampling of JAL airliner observations

Y. Sawa, T. Machida, H. Matsueda, 2008 .

The seasonal cycle amplitude of total column CO2: Factors behind the model‐observation mismatch

Shamil Maksyutov, S. Houweling, C. Sweeney, 2011 .

Relative contribution of transport/surface flux to the seasonal vertical synoptic CO2 variability in the troposphere over Narita

Shamil Maksyutov, Hidekazu Matsueda, Tomoko Shirai, 2012 .

Diurnal and seasonal variations in atmospheric CO2 in Sapporo, Japan: Anthropogenic sources and biogenic sinks

Hidekazu Matsueda, Shoichi Taguchi, Y. Sawa, 2007 .

Direct assessment of international consistency of standards for ground-level ozone: strategy and implementation toward metrological traceability network in Asia.

H. Tanimoto, Y. Sawa, H. Matsueda, 2007, Journal of environmental monitoring : JEM.

Diagnosing recent CO emissions and ozone evolution in East Asia using coordinated surface observations, adjoint inverse modeling, and MOPITT satellite data

Lin Zhang, Y. Sawa, H. Matsueda, 2008 .