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    Academic Journals

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

  Authors:Yosuke Niwa, Yousuke Sawa, Hideki Nara, Toshinobu Machida, Hidekazu Matsueda, Taku Umezawa, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 12) Peer-Reviewed

  June 23, 2021283 words Brief article Inverse analysis was used to estimate fire carbon emissions in Equatorial Asia induced by the big El Niño event in 2015. This inverse analysis is unique because it extensively used high-precision atmospheric mole...

• Interlaboratory comparison of [delta].sup.13C and [delta]D measurements of atmospheric CH.sub.4 for combined use of data sets from different laboratories

  Authors:Taku Umezawa, Carl A. M. Brenninkmeijer, Carina van der Veen, Stanley C. Tyler, Ryo Fujita, Shinji Morimoto, et al.From:Atmospheric Measurement Techniques (Vol. 11, Issue 2) Peer-Reviewed

  Mar. 2, 2018108 words Author abstract, Bri... Byline: Taku Umezawa, Carl A. M. Brenninkmeijer, Thomas Rö,ckmann, Carina van der Veen, Stanley C. Tyler, Ryo Fujita, Shinji Morimoto, Shuji Aoki, Todd Sowers, Jochen Schmitt, Michael Bock, Jonas Beck, Hubertus...

• Seasonal evaluation of tropospheric CO.sub.2 over the Asia-Pacific region observed by the CONTRAIL commercial airliner measurements

  Authors:Taku Umezawa, Hidekazu Matsueda, Yousuke Sawa, Yosuke Niwa, Toshinobu Machida, and Lingxi ZhouFrom:Atmospheric Chemistry and Physics (Vol. 18, Issue 20) Peer-Reviewed

  Oct. 17, 2018363 words Author abstract, Bri...

  Measurement of atmospheric carbon dioxide (CO.sub.2) is indispensable for top-down estimation of surface CO.sub.2 sources/sinks by an atmospheric transport model. Despite the growing importance of Asia in the global...