Global environmental observation from the Japanese Experiment Module, KIBO

The Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) is an atmospheric observation sensor of unprecedented high sensitivity with superconducting technology. SMILES is the instrument to observe the global environment in the Japanese Experiment Module "KIBO" aboard the International Space Station (ISS). SMILES was jointly developed by the National Institute of Information and Communication Technology (NICT) and the Japan Aerospace Exploration Agency (JAXA).

SMILES and international space station
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SMILES observes the atmosphere that protects the earth

Many cosmic rays and particles harmful to living things travel through space and strike the planet that we live on. The earth’s atmosphere is one of the most important barriers which absorb them and protect life on the earth. In addition, atmospheric environmental concerns such as ozone depletion, global warming and air pollution caused by PM2.5 are becoming serious issues in recent years. There remain many mysteries of the atmosphere that have not been unraveled yet. Highly sensitive data obtained through SMILES observation opens a new issue of atmosphere that protects the earth, the home of humankind. It contributes to global environmental diagnosis.

SMILES Observation Data

SMILES Observation Data
SMILES Observation Data Ozone(O3) and Carbon Monoxide(CIO)

Go to Quick look of SMILES climatology
Go to Data access of the SMILES Level 2 research product v3.0.0

Latest Journal Articles


  • 佐藤知紘, 2017年度日本大気化学会奨励賞, “ISS搭載SMILESデータを用いた独自の物理量導出アルゴリズムによる新たな中間圏化学の開拓” (Online Access)
  • T. O. Sato, K. Kuribayashi, N. Yoshida, Y. Kasai, “Diurnal variation of oxygen isotopic enrichment in asymmetric-18 ozone observed by the SMILES from space”, Geophysical Research Letters, Vol. 44, pp 6399-6406, 2017. DOI:2016GL071924
  • K. Kuribayashi, N. Yoshida, H. Jin, Y. J. Orsolini, Y. Kasai, "Optimal retrieval method to stimate ozone vertical profile in the mesosphere and lower thermosphere (MLT) region from submillimeter-wave limb emission spectra", Journal of Quantitative Spectroscopy & Radiative Transfer, Vol.192, pp 42-52, 2017 (Online Access)


  • L. Millan, S. Wang, N. Livesey, D. Kinnison, H. Sagawa, and Y. Kasai(2015), Stratospheric and Mesospheric HO2 Observations from the Aura Microwave Limb Sounder, Atmos. Chem. Phys., 15, 2889-2902, 2015, DOI:10.5194/acp-15-2889-2015
  • Jonathan H. Jiang, Hui Su, Chengxing Zhai, T.Janice Shen, Tongwen Wu, Jie Zhang, Jason N.S. Cole, Knut von Salzen, Leo J. Donner, Charles Seman, Anthony Del Genio, Larissa S. Nazarenko, Jean-Louis Dufresne, Masahiro Watanabe, Cyril Morcrette, Tsuyoshi Koshiro, Hideaki Kawai, Andrew Gettelman, Luis Millán, William G. Read, Nathaniel J. Livesey, Yasko Kasai, and Masato Shiotani(2015), Evaluating the diurnal cycle of upper tropospheric ice clouds in climate models using SMILES observations, Journal of Atmospheric Sciences, Vol.72, 1022-1044,2015, DOI: 10.1175/JAS-D-14-0124.1

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