Taku Umezawa
机构: National Institute for Environmental Studies
每年引用次数
引用次数
引用: 880
H-指数: 17
I10-指数 : 23
出版物: 61
Regional emission and loss budgets of atmospheric methane (2002-2012)
A. M. Crotwell , K. Ishijima , E. A. Kort , S. Aoki
2015 AGU Fall Meeting 2015
1
2015
Using Long-Term Observations of VOCs from the CARIBIC Observatory to Refine Understanding of Transport and Chemistry in the UT/LS
A. Zahn , H. Riede , J. Williams , C. A. M. Brenninkmeijer
AGU Fall Meeting Abstracts 2014
2014
Variations of atmospheric CH4, N2O and SF6 over Japan and the East China Sea
K. Ishijima , S. Ishidoya , S. Morimoto , T. Nakazawa
AGUFM 2013
2013
Seasonal cycles of atmospheric methane and its carbon and hydrogen isotopic ratios in the lower and upper troposphere of the western Pacific region
K. Ishijima , S. Aoki , P. K. Patra , Y. Sawa
AGUFM 2009
2009
Methyl chloride in the UT/LS observed by CARIBIC: global distribution, Asian summer monsoon outflow, and use as a tracer for tropical air
D. Oram , C. Sauvage , A. K. Baker , A. Rauthe-Schoech
AGU Fall Meeting Abstracts 2014
2014
Effects of natural and anthropogenic CH4 sources on variations of atmospheric CH4 over western Siberia identified by its carbon and hydrogen stable isotopes
T. Machida , S. Aoki , T. Nakazawa , T. Umezawa
AGU Fall Meeting Abstracts 2010
2010
Methyl chloride in the upper troposphere observed by the CARIBIC passenger aircraft observatory: Large-scale distributions and Asian summer monsoon outflow
T. Umezawa , A. K. Baker , D. Oram , C. Sauvage
Journal of Geophysical Research 119 ( 9) 5542 -5558
13
2014
N2O as a tracer of mixing stratospheric and tropospheric air based on CARIBIC data with applications for CO2
S.S. Assonov , C.A.M. Brenninkmeijer , T. Schuck , T. Umezawa
Atmospheric Environment 79 769 -779
18
2013
Variations in global methane sources and sinks during 1910-2010
P. J. Fraser , L. P. Steele , R. L. Langenfelds , C. M. Trudinger
Atmospheric Chemistry and Physics 15 ( 5) 2595 -2612
119
2015
Methyl chloride as a tracer of tropical tropospheric air in the lowermost stratosphere inferred from IAGOS‐CARIBIC passenger aircraft measurements
T. Umezawa , A. K. Baker , C. A. M. Brenninkmeijer , A. Zahn
Journal of Geophysical Research 120 ( 23) 12313 -12326
8
2015
Carbon and hydrogen isotopic ratios of atmospheric methane in the upper troposphere over the Western Pacific
T. Umezawa , T. Machida , K. Ishijima , H. Matsueda
Atmospheric Chemistry and Physics 12 ( 17) 8095 -8113
24
2012
Simulation of atmospheric N2O with GEOS-Chem and its adjoint: evaluation of observational constraints
K. C. Wells , D. B. Millet , N. Bousserez , D. K. Henze
Geoscientific Model Development 8 ( 10) 3179 -3198
11
2015
Climatological variations of tropospheric CO2 over the Asia-Pacific region observed by the CONTRAIL commercial airliner measurements
Hidekazu Matsueda , Lingxi Zhou , Yousuke Sawa , Yosuke Niwa
EGUGA 11094
2018
Fire-induced CO 2 emission in Equatorial Asia during the 2015 drought estimated by aircraft and ship observations
Hidekazu Matsueda , Hiroshi Tanimoto , Yousuke Sawa , Yosuke Niwa
AGU Fall Meeting 2019
2019
Inter-annual variations of CO2 observed by commercial airliner in the CONTRAIL project
Hidekazu Matsueda , Yousuke Sawa , Yosuke Niwa , Taku Umezawa
EGUGA
2016
The recent changes and topics in CONTRAIL project
Hidekazu Matsueda , Yousuke Sawa , Yosuke Niwa , Taku Umezawa
EGUGA
2016
Quantifying India's methane emissions using satellite, aircraft and surface data
Andreas Zahn , Marcel van der Schoot , Matthew Rigby , Hartmut Boesch
EGU General Assembly Conference Abstracts 15494
2017
Seasonal Variations of SF 6 , CO 2 , CH 4 , and N 2 O in the UT/LS Region due to Emissions, Transport, and Chemistry
Shinji Morimoto , Jagat S. H. Bisht , Naoko Saitoh , Takakiyo Nakazawa
Journal of Geophysical Research 126 ( 4)
2021
Methane budget of East Asia, 1990-2015: A bottom-up evaluation
Akihiko Ito , Yasunori Tohjima , Takuya Saito , Taku Umezawa
Science of The Total Environment 676 40 -52
12
2019
A Cryogen-Free Automated Measurement System of Stable Carbon Isotope Ratio of Atmospheric Methane
Taku Umezawa , Stephen J. Andrews , Takuya Saito
Journal of the Meteorological Society of Japan 98 ( 1) 115 -127
2020