| Variations in global methane sources and sinks during 1910–2010 A Ghosh, PK Patra, K Ishijima, T Umezawa, A Ito, DM Etheridge, ... Atmospheric Chemistry and Physics 15 (5), 2595-2612, 2015 | 136 | 2015 |
| Regional methane emission estimation based on observed atmospheric concentrations (2002-2012) PK Patra, T Saeki, EJ Dlugokencky, K Ishijima, T Umezawa, A Ito, S Aoki, ... Journal of the Meteorological Society of Japan. Ser. II 94 (1), 91-113, 2016 | 80 | 2016 |
| Atmospheric observations show accurate reporting and little growth in India’s methane emissions AL Ganesan, M Rigby, MF Lunt, RJ Parker, H Boesch, N Goulding, ... Nature communications 8 (1), 836, 2017 | 70 | 2017 |
| Distribution of methane in the tropical upper troposphere measured by CARIBIC and CONTRAIL aircraft TJ Schuck, K Ishijima, PK Patra, AK Baker, T Machida, H Matsueda, ... Journal of Geophysical Research: Atmospheres 117 (D19), 2012 | 57 | 2012 |
| Emissions from the oil and gas sectors, coal mining and ruminant farming drive methane growth over the past three decades N Chandra, PK Patra, JSH Bisht, A Ito, T Umezawa, N Saigusa, ... Journal of the Meteorological Society of Japan. Ser. II 99 (2), 309-337, 2021 | 48 | 2021 |
| Interlaboratory comparison of δ13C and δD measurements of atmospheric CH4 for combined use of data sets from different laboratories T Umezawa, CAM Brenninkmeijer, T Röckmann, C Veen, SC Tyler, ... Atmospheric Measurement Techniques 11 (2), 1207-1231, 2018 | 45 | 2018 |
| Interlaboratory comparison of δ13C and δD measurements of atmospheric CH4 for combined use of data sets from different laboratories T Umezawa, CAM Brenninkmeijer, T Röckmann, C Veen, SC Tyler, ... Atmospheric Measurement Techniques 11 (2), 1207-1231, 2018 | 45 | 2018 |
| Methane budget of East Asia, 1990–2015: A bottom-up evaluation A Ito, Y Tohjima, T Saito, T Umezawa, T Hajima, R Hirata, M Saito, ... Science of the total environment 676, 40-52, 2019 | 40 | 2019 |
| Carbon and hydrogen isotopic ratios of atmospheric methane in the upper troposphere over the Western Pacific T Umezawa, T Machida, K Ishijima, H Matsueda, Y Sawa, PK Patra, ... Atmospheric Chemistry and Physics 12 (17), 8095-8113, 2012 | 36 | 2012 |
| Contributions of natural and anthropogenic sources to atmospheric methane variations over western Siberia estimated from its carbon and hydrogen isotopes T Umezawa, T Machida, S Aoki, T Nakazawa Global Biogeochemical Cycles 26 (4), 2012 | 34 | 2012 |
| N2O as a tracer of mixing stratospheric and tropospheric air based on CARIBIC data with applications for CO2 SS Assonov, CAM Brenninkmeijer, T Schuck, T Umezawa Atmospheric environment 79, 769-779, 2013 | 33 | 2013 |
| Seasonal evaluation of tropospheric CO2 over the Asia-Pacific region observed by the CONTRAIL commercial airliner measurements T Umezawa, H Matsueda, Y Sawa, Y Niwa, T Machida, L Zhou Atmospheric Chemistry and Physics 18 (20), 14851-14866, 2018 | 32 | 2018 |
| A high-precision measurement system for carbon and hydrogen isotopic ratios of atmospheric methane and its application to air samples collected in the western Pacific region T Umezawa, S Aoki, T Nakazawa, S Morimoto Journal of the Meteorological Society of Japan 87 (3), 365-379, 2009 | 28 | 2009 |
| Statistical characterization of urban CO2 emission signals observed by commercial airliner measurements T Umezawa, H Matsueda, T Oda, K Higuchi, Y Sawa, T Machida, Y Niwa, ... Scientific reports 10 (1), 7963, 2020 | 23 | 2020 |
| Atmospheric observations show accurate reporting and little growth in India’s methane emissions, Nat. Commun., 8, 836 AL Ganesan, M Rigby, MF Lunt, RJ Parker, H Boesch, N Goulding, ... | 23 | 2017 |
| Variations of tropospheric methane over Japan during 1988–2010 T Umezawa, D Goto, S Aoki, K Ishijima, PK Patra, S Sugawara, ... Tellus B: Chemical and Physical Meteorology 66 (1), 23837, 2014 | 21 | 2014 |
| Methyl chloride in the upper troposphere observed by the CARIBIC passenger aircraft observatory: Large‐scale distributions and Asian summer monsoon outflow T Umezawa, AK Baker, D Oram, C Sauvage, D O'Sullivan, ... Journal of Geophysical Research: Atmospheres 119 (9), 5542-5558, 2014 | 19 | 2014 |
| Seasonal Variations of SF6, CO2, CH4, and N2O in the UT/LS Region due to Emissions, Transport, and Chemistry JSH Bisht, T Machida, N Chandra, K Tsuboi, PK Patra, T Umezawa, ... Journal of Geophysical Research: Atmospheres 126 (4), e2020JD033541, 2021 | 16 | 2021 |
| Estimation of fire-induced carbon emissions from Equatorial Asia in 2015 using in situ aircraft and ship observations Y Niwa, Y Sawa, H Nara, T Machida, H Matsueda, T Umezawa, A Ito, ... Atmospheric Chemistry and Physics 21 (12), 9455-9473, 2021 | 15 | 2021 |
| Estimation of fire-induced carbon emissions from Equatorial Asia in 2015 using in situ aircraft and ship observations Y Niwa, Y Sawa, H Nara, T Machida, H Matsueda, T Umezawa, A Ito, ... Atmospheric Chemistry and Physics 21 (12), 9455-9473, 2021 | 15 | 2021 |
Prabir K. PatraRIGC-ESSR/IACE, JAMSTECVerified email at jamstec.go.jp
