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Did Atmospheric CO2 and CH4 Observation at Yonagunijima Detect Fossil-Fuel CO2 Reduction due to COVID-19 Lockdown?
Published in:
Journal of the Meteorological Society of Japan, 2022, v. 100, n. 2, p. 437, doi. 10.2151/jmsj.2022-021
By:
- Yasunori TOHJIMA;
- Yosuke NIWA;
- Kazuhiro TSUBOI;
- Kazuyuki SAITO
Publication type:
Article
Understanding Temporal Variations of Atmospheric Radon-222 around Japan Using Model Simulations.
Published in:
Journal of the Meteorological Society of Japan, 2022, v. 100, n. 2, p. 343, doi. 10.2151/jmsj.2022-017
By:
- Kentaro ISHIJIMA;
- Kazuhiro TSUBOI;
- Hidekazu MATSUEDA;
- Yasumichi TANAKA;
- Takashi MAKI;
- Takashi NAKAMURA;
- Yosuke NIWA;
- Shigekazu HIRAO
Publication type:
Article
A 4D-Var inversion system based on the icosahedral grid model (NICAM-TM 4D-Var v1.0): 2. Optimization scheme and identical twin experiment of atmospheric CO2 inversion.
Published in:
Geoscientific Model Development Discussions, 2016, p. 1, doi. 10.5194/gmd-2016-232
By:
- Yosuke Niwa;
- Yosuke Fujii;
- Yousuke Sawa;
- Yosuke Iida;
- Akihiko Ito;
- Masaki Satoh;
- Ryoichi Imasu;
- Kazuhiro Tsuboi;
- Hidekazu Matsueda;
- Nobuko Saigusa
Publication type:
Article
A 4D-Var inversion system based on the icosahedral grid model (NICAM-TM 4D-Var v1.0): 1. Off-line forward and adjoint transport models.
Published in:
Geoscientific Model Development Discussions, 2016, p. 1, doi. 10.5194/gmd-2016-231
By:
- Yosuke Niwa;
- Hirofumi Tomita;
- Masaki Satoh;
- Ryoichi Imasu;
- Yousuke Sawa;
- Kazuhiro Tsuboi;
- Hidekazu Matsueda;
- Toshinobu Machida;
- Motoki Sasakawa;
- Belan, Boris;
- Nobuko Saigusa
Publication type:
Article
O2 : CO2 exchange ratio for net turbulent flux observed in an urban area of Tokyo, Japan, and its application to an evaluation of anthropogenic CO2 emissions.
Published in:
Atmospheric Chemistry & Physics, 2020, v. 20, n. 9, p. 5293, doi. 10.5194/acp-20-5293-2020
By:
- Ishidoya, Shigeyuki;
- Sugawara, Hirofumi;
- Terao, Yukio;
- Kaneyasu, Naoki;
- Aoki, Nobuyuki;
- Tsuboi, Kazuhiro;
- Kondo, Hiroaki
Publication type:
Article
Seasonal characteristics of trace gas transport into the extratropical upper troposphere and lower stratosphere.
Published in:
Atmospheric Chemistry & Physics, 2019, v. 19, n. 10, p. 7073, doi. 10.5194/acp-19-7073-2019
By:
- Inai, Yoichi;
- Fujita, Ryo;
- Machida, Toshinobu;
- Matsueda, Hidekazu;
- Sawa, Yousuke;
- Tsuboi, Kazuhiro;
- Katsumata, Keiichi;
- Morimoto, Shinji;
- Aoki, Shuji;
- Nakazawa, Takakiyo
Publication type:
Article
Seasonal changes of CO2, CH4, N2O, and SF6 in the upper troposphere/lower stratosphere over the Eurasian continent observed by commercial airliner.
Published in:
Geophysical Research Letters, 2015, v. 42, n. 6, p. 2001, doi. 10.1002/2014GL062734
By:
- Sawa, Yousuke;
- Machida, Toshinobu;
- Matsueda, Hidekazu;
- Niwa, Yosuke;
- Tsuboi, Kazuhiro;
- Murayama, Shohei;
- Morimoto, Shinji;
- Aoki, Shuji
Publication type:
Article
Seasonal Variations of SF6, CO2, CH4, and N2O in the UT/LS Region due to Emissions, Transport, and Chemistry.
Published in:
Journal of Geophysical Research. Atmospheres, 2021, v. 126, n. 4, p. 1, doi. 10.1029/2020JD033541
By:
- Bisht, Jagat S. H.;
- Machida, Toshinobu;
- Chandra, Naveen;
- Tsuboi, Kazuhiro;
- Patra, Prabir K.;
- Umezawa, Taku;
- Niwa, Yosuke;
- Sawa, Yousuke;
- Morimoto, Shinji;
- Nakazawa, Takakiyo;
- Saitoh, Naoko;
- Takigawa, Masayuki
Publication type:
Article
Independent Bias Correction Method for Satellite Observation Data Introduced to CO2 Flux Inversion.
Published in:
SOLA, 2023, v. 19, p. 157, doi. 10.2151/sola.2023-021
By:
- Takashi Maki;
- Keiichi Kondo;
- Kentaro Ishijima;
- Sekiyama, Tsuyoshi T.;
- Kazuhiro Tsuboi;
- Takashi Nakamura
Publication type:
Article
Analysis of High Radon-222 Concentration Events Using Multi-Horizontal-Resolution NICAM Simulations.
Published in:
SOLA, 2018, v. 14, p. 111, doi. 10.2151/sola.2018-019
By:
- Kentaro Ishijima;
- Masayuki Takigawa;
- Yousuke Yamashita;
- Hisashi Yashiro;
- Chihiro Kodama;
- Masaki Satoh;
- Kazuhiro Tsuboi;
- Hidekazu Matsueda;
- Yosuke Niwa;
- Shigekazu Hirao
Publication type:
Article
Operation of vehicles in AGV system and method for analyzing operation.
Published in:
Electrical Engineering in Japan, 2012, v. 178, n. 1, p. 56, doi. 10.1002/eej.21190
By:
- Hoshino, Takahiro;
- Tsuboi, Kazuhiro;
- Yamanaka, Kazuo;
- Hamamatsu, Yoshio
Publication type:
Article
Widespread pollution events of carbon monoxide observed over the western North Pacific during the East Asian Regional Experiment (EAREX) 2005 campaign.
Published in:
Journal of Geophysical Research. Atmospheres, 2007, v. 112, n. D22, p. n/a, doi. 10.1029/2006JD008055
By:
- Sawa, Yousuke;
- Tanimoto, Hiroshi;
- Yonemura, Seiichiro;
- Matsueda, Hidekazu;
- Wada, Akira;
- Taguchi, Shoichi;
- Hayasaka, Tadahiro;
- Tsuruta, Haruo;
- Tohjima, Yasunori;
- Mukai, Hitoshi;
- Kikuchi, Nobuyuki;
- Katagiri, Syuichiro;
- Tsuboi, Kazuhiro
Publication type:
Article
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 CO2 inversion.
Published in:
Geoscientific Model Development, 2017, v. 10, n. 6, p. 2201, doi. 10.5194/gmd-10-2201-2017
By:
- Yosuke Niwa;
- Yosuke Fujii;
- Yousuke Sawa;
- Yosuke Iida;
- Akihiko Ito;
- Masaki Satoh;
- Ryoichi Imasu;
- Kazuhiro Tsuboi;
- Hidekazu Matsueda;
- Nobuko Saigusa
Publication type:
Article
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.
Published in:
Geoscientific Model Development, 2017, v. 10, n. 3, p. 1157, doi. 10.5194/gmd-10-1157-2017
By:
- Yosuke Niwa;
- Hirofumi Tomita;
- Masaki Satoh;
- Ryoichi Imasu;
- Yousuke Sawa;
- Kazuhiro Tsuboi;
- Hidekazu Matsueda;
- Toshinobu Machida;
- Motoki Sasakawa;
- Belan, Boris;
- Nobuko Saigusa
Publication type:
Article
A Model for Merging Sections in Transportation Systems and Its Analysis.
Published in:
Electronics & Communications in Japan, 2016, v. 99, n. 9, p. 3, doi. 10.1002/ecj.11834
By:
- HOSHINO, TAKAHIRO;
- TIAN, CHUAN;
- KOMURO, TAKAFUMI;
- TSUBOI, KAZUHIRO;
- HAMAMATSU, YOSHIO
Publication type:
Article
Analysis of traffic congestion by considering merging on entry lines in transportation system.
Published in:
Electronics & Communications in Japan, 2012, v. 95, n. 8, p. 34, doi. 10.1002/ecj.11374
By:
- Hoshino, Takahiro;
- Tsuboi, Kazuhiro;
- Hamamatsu, Yoshio
Publication type:
Article
Seasonal characteristics of trace gases transports into the extratropical upper troposphere/lower stratosphere.
Published in:
Geophysical Research Abstracts, 2019, v. 21, p. 1
By:
- Inai, Yoichi;
- Fujita, Ryo;
- Machida, Toshinobu;
- Matsueda, Hidekazu;
- Sawa, Yousuke;
- Tsuboi, Kazuhiro;
- Katsumata, Keiichi;
- Morimoto, Shinji;
- Aoki, Shuji;
- Nakazawa, Takakiyo
Publication type:
Article
Consumption of atmospheric O2 in an Urban Area of Tokyo, Japan derived from continuous observations of O2 and CO2 concentrations and CO2 flux.
Published in:
Atmospheric Chemistry & Physics Discussions, 2019, p. 1, doi. 10.5194/acp-2019-652
By:
- Shigeyuki Ishidoya;
- Hirofumi Sugawara;
- Yukio Terao;
- Naoki Kaneyasu;
- Nobuyuki Aoki;
- Kazuhiro Tsuboi;
- Hiroaki Kondo
Publication type:
Article
Seasonal characteristics of chemical and dynamical transports into the extratropical upper troposphere/lower stratosphere.
Published in:
Atmospheric Chemistry & Physics Discussions, 2018, p. 1, doi. 10.5194/acp-2018-1030
By:
- Yoichi Inai;
- Ryo Fujita;
- Toshinobu Machida;
- Hidekazu Matsueda;
- Yousuke Sawa;
- Kazuhiro Tsuboi;
- Keiichi Katsumata;
- Shinji Morimoto;
- Shuji Aoki;
- Takakiyo Nakazawa
Publication type:
Article
Near-real-time estimation of fossil fuel CO2 emissions from China based on atmospheric observations on Hateruma and Yonaguni Islands, Japan.
Published in:
Progress in Earth & Planetary Science, 2023, v. 10, n. 1, p. 1, doi. 10.1186/s40645-023-00542-6
By:
- Tohjima, Yasunori;
- Niwa, Yosuke;
- Patra, Prabir K.;
- Mukai, Hitoshi;
- Machida, Toshinobu;
- Sasakawa, Motoki;
- Tsuboi, Kazuhiro;
- Saito, Kazuyuki;
- Ito, Akihiko
Publication type:
Article
Measurement report: Method for evaluating CO2 emission from a cement plant by atmosphere O2/N2 and CO2 measurements and its applicability to the detection of CO2 capture signals.
Published in:
Atmospheric Chemistry & Physics Discussions, 2022, p. 1, doi. 10.5194/acp-2022-570
By:
- Shigeyuki Ishidoya;
- Kazuhiro Tsuboi;
- Hiroaki Kondo;
- Kentaro Ishijima;
- Nobuyuki Aoki;
- Hidekazu Matsueda;
- Kazuyuki Saito
Publication type:
Article
Spatiotemporal variations of the δ(O2/N2), CO2 and δ(APO) in the troposphere over the Western North Pacific.
Published in:
Atmospheric Chemistry & Physics Discussions, 2021, p. 1, doi. 10.5194/acp-2021-787
By:
- Shigeyuki Ishidoya;
- Kazuhiro Tsuboi;
- Yosuke Niwa;
- Hidekazu Matsueda;
- Shohei Murayama;
- Kentaro Ishijima;
- Kazuyuki Saito
Publication type:
Article
Measurement report: Method for evaluating CO2 emissions from a cement plant using atmospheric δ(O2/ N2) and CO2 measurements and its implication for future detection of CO2 capture signals.
Published in:
Atmospheric Chemistry & Physics, 2024, v. 24, n. 2, p. 1059, doi. 10.5194/acp-24-1059-2024
By:
- Ishidoya, Shigeyuki;
- Tsuboi, Kazuhiro;
- Kondo, Hiroaki;
- Ishijima, Kentaro;
- Aoki, Nobuyuki;
- Matsueda, Hidekazu;
- Saito, Kazuyuki
Publication type:
Article
Spatiotemporal variations of the δ(O2 / N2), CO2 and δ(APO) in the troposphere over the western North Pacific.
Published in:
Atmospheric Chemistry & Physics, 2022, v. 22, n. 10, p. 6953, doi. 10.5194/acp-22-6953-2022
By:
- Ishidoya, Shigeyuki;
- Tsuboi, Kazuhiro;
- Niwa, Yosuke;
- Matsueda, Hidekazu;
- Murayama, Shohei;
- Ishijima, Kentaro;
- Saito, Kazuyuki
Publication type:
Article

Found: 24

Did Atmospheric CO<sub>2</sub> and CH<sub>4</sub> Observation at Yonagunijima Detect Fossil-Fuel CO<sub>2</sub> Reduction due to COVID-19 Lockdown?

Understanding Temporal Variations of Atmospheric Radon-222 around Japan Using Model Simulations.

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

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

O2 : CO2 exchange ratio for net turbulent flux observed in an urban area of Tokyo, Japan, and its application to an evaluation of anthropogenic CO2 emissions.

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

Seasonal changes of CO<sub>2</sub>, CH<sub>4</sub>, N<sub>2</sub>O, and SF<sub>6</sub> in the upper troposphere/lower stratosphere over the Eurasian continent observed by commercial airliner.

Seasonal Variations of SF<sub>6</sub>, CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O in the UT/LS Region due to Emissions, Transport, and Chemistry.

Independent Bias Correction Method for Satellite Observation Data Introduced to CO<sub>2</sub> Flux Inversion.

Analysis of High Radon-222 Concentration Events Using Multi-Horizontal-Resolution NICAM Simulations.

Operation of vehicles in AGV system and method for analyzing operation.

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

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<sub>2</sub> inversion.

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.

A Model for Merging Sections in Transportation Systems and Its Analysis.

Analysis of traffic congestion by considering merging on entry lines in transportation system.

Seasonal characteristics of trace gases transports into the extratropical upper troposphere/lower stratosphere.

Consumption of atmospheric O<sub>2</sub> in an Urban Area of Tokyo, Japan derived from continuous observations of O<sub>2</sub> and CO<sub>2</sub> concentrations and CO<sub>2</sub> flux.

Seasonal characteristics of chemical and dynamical transports into the extratropical upper troposphere/lower stratosphere.

Near-real-time estimation of fossil fuel CO<sub>2</sub> emissions from China based on atmospheric observations on Hateruma and Yonaguni Islands, Japan.

Measurement report: Method for evaluating CO<sub>2</sub> emission from a cement plant by atmosphere O<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub> measurements and its applicability to the detection of CO<sub>2</sub> capture signals.

Spatiotemporal variations of the δ(O<sub>2</sub>/N<sub>2</sub>), CO<sub>2</sub> and δ(APO) in the troposphere over the Western North Pacific.

Measurement report: Method for evaluating CO2 emissions from a cement plant using atmospheric δ(O2/ N2) and CO2 measurements and its implication for future detection of CO2 capture signals.

Spatiotemporal variations of the δ(O2 / N2), CO2 and δ(APO) in the troposphere over the western North Pacific.