Variations of tropospheric methane over Japan during 1988–2010 by Taku Umezawa, Daisuke Goto, Shuji Aoki, Kentaro Ishijima, Prabir K. Patra, Satoshi Sugawara, Shinji Morimoto, Takakiyo Nakazawa

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Temporal variations of atmospheric greenhouse gases and their related gases at Syowa Station, Antarctica and Ny-Alesund, Svalbard. by Shinji Morimoto, Shigeyuki Ishidoya, Kentarou Ishijima, Hisashi Yashiro, Taku Umezawa, Gen Hashida, Satoshi Sugawara, Shuji Aoki, Takakiyo Nakazawa, Takashi Yamanouchi

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Methane emissions decreased in fossil fuel exploitation and sustainably increased in microbial source sectors during 1990–2020 by Naveen Chandra, Prabir K. Patra, Ryo Fujita, Lena Höglund-Isaksson, Taku Umezawa, Daisuke Goto, Shinji Morimoto, Bruce H. Vaughn, Thomas Röckmann

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Atmospheric observations show accurate reporting and little growth in India’s methane emissions by Anita L. Ganesan, Matt Rigby, Mark F. Lunt, Robert J. Parker, Hartmut Boesch, N. Goulding, Taku Umezawa, Andreas Zahn, Abhijit Chatterjee, Ronald G. Prinn, Yogesh K. Tiwari, Marcel van der Schoot, Paul B. Krummel

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