Patent

Papers

[1st Author]

・Quantification of air cleanliness in an easy-to-understand manner like thermometer:

Sato, T. O., Kuroda, T., and Kasai, Y.,
“Novel index to comprehensively evaluate air cleanliness: the Clean aIr Index (CII)”,
Geoscience Communication, Vol. 3, pp. 233-247, 2020.
DOI: 10.5194/gc-3-233-2020

・Sensitivity simulation of retrieval of boundary layer ozone concentration by combining satellite observations of multiple wavelength bands:

Sato, T. O., Sato, T. M., Sagawa, H., Noguchi, K., Saitoh, N., Irie, H., Kita, K., Mahani, M. E., Zattsu, K., Imasu, R., Hayashida, S., and Kasai, Y.
“Vertical profile of tropospheric ozone derived from synergetic retrieval using three different wavelength ranges, UV, IR, and microwave: sensitivity study for satellite observation”,
Atmospheric Measurement Techniques, Volume 11, pp 1-16, 2018.
DOI: 10.5194/amt-11-1653-2018

・Photo-induced diurnal variation of ozone isotopic enrichment using satellite remote sensing:

Sato, T. O., Kuribayashi, K., Yoshida, N., and Kasai, Y.,
“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: 10.1002/2016GL071924

・First measurement of vertical profile of ozone isotopic enrichment from the middle stratosphere to lower mesosphere:

Sato, T. O., Sagawa, H., Yoshida, N., and Kasai, Y.,
“Vertical profile of δ¹⁸OOO from the middle stratosphere to lower mesosphere from SMILES spectra“,
Atmospheric Measurement Techniques, Vol. 7, pp. 941-958, 2014.
DOI:10.5194/amt-7-941-2014

・Observation of diurnal variation in chlorine monoxide, a substance related to ozone depletion, from space:

Sato, T. O., Sagawa, H., Kreyling, D., Manabe, T., Ochiai, S., Kikuchi, K., Baron, P., Mendrok. J., Urban, J., Murtagh, D., Yasui, M. and Kasai, Y.,
“Strato-mesospheric ClO observations by SMILES: error analysis and diurnal variation”,
Atmospheric Measurement Techniques, Vol. 5, pp. 2809-2825, 2012
DOI:10.5194/amt-5-2809-2012

・Laboratory measurements of pressure broadening of submillimeter wave transitions of hydrogen peroxide:

Sato, T. O., Mizoguchi, A., Mendrok, J., Kanamori, H., and Kasai, Y.,
“Measurement of the pressure broadening coefficient of the 625 GHz transition of H₂O₂ in the sub-millimeter-wave region”,
Journal of Quantitative Spectroscopy & Radiative Transfer, Vol. 111 (6), pp. 821-825, 2010.
DOI: 10.1016/j.jqsrt.2009.11.022

[Co-Author]

・Concept paper that describes overview of the greenhouse gas observation mission with GOSAT-GW satellite:

Tanimoto, H., Matsunaga, T., Someya, Y., Fujinawa, T., Ohyama, H., Morino, I., Yashiro, H., Sugita, T., Inomata, S., Müller, A., Saeki, T., Yoshida, Y., Niwa, Y., Saito, M., Noda, H., Yamashita, Y., Ikeda, K., Saigusa, N., Machida, T., Frey, M. M., Lim, H., Srivastava, P., Jin, Y., Shimizu, A., Nishizawa, T., Kanaya, Y., Sekiya, T., Patra, P., Takigawa, M., Bisht, J., Kasai, Y., and Sato, T. O.
“The greenhouse gas observation mission with Global Observing SATellite for Greenhouse gases and Water cycle (GOSAT-GW): objectives, conceptual framework and scientific contributions”
Progress in Earth and Planetary Science, Vol. 12:8, 2025.
DOI: 10.1186/s40645-025-00684-9, 2025

・Observation of the vertical distribution of hydrogen chloride from the stratosphere to the lower thermosphere:

Nara, S., Sato, T. O., Yamada, T., Fujinawa, T., Kuribayashi, K., Manabe, T., Froidevaux, L., Livesey, N. J., Walker, K. A., Xu, J., Schreier, F., Orsolini, Y. J., Limpasuvan, V., Kuno, N., and Kasai, Y.
“Validation of SMILES HCl profiles over a wide range from the stratosphere to the lower thermosphere”,
Atmospheric Measurement Techniques, Vol. 13, pp. 6837–6852, 2020.
DOI: 10.5194/amt-13-6837-2020

・Comprehensive discussion and recommendations on uncertainties in retrieving physical parameters from satellite remote sensing:

von Clarmann, T., Degenstein, D. A., Livesey, N. J., Bender, S., Braverman, A., Butz, A., Compernolle, S., Damadeo, R., Dueck, S., Eriksson, P., Funke, B., Johnson, M. C., Kasai, Y., Keppens, A., Kleinert, A., Kramarova, N. A., Laeng, A., Langerock, B., Payne, V. H., Rozanov, A., Sato, T. O., Schneider, M., Sheese, P., Sofieva, V., Stiller, G. P., von Savigny, C., and Zawada, D.,
“Overview: Estimating and reporting uncertainties in remotely sensed atmospheric composition and temperature”,
Atmospheric Measurement Techniques, Vol. 13, pp. 4393–4436, 2020.
DOI: 10.5194/amt-13-4393-2020

・Direct observation of mesospheric hydroperoxyl radical enhancement by sprites:

Yamada, T., Sato, T. O., Adachi, T., Winkler, H., Kuribayashi, K., Larsson, R., Yoshida, N., Takahashi, Y., Sato, M., Chen, A. B., Hsu, R. R., Nakano, Y., Fujinawa, T., Nara, S., Uchiyama, Y., and Kasai, Y.,
“HO2 Generation Above Sprite-Producing Thunderstorms Derived from Low-Noise SMILES Observation Spectra”,
Geophysical Research Letters, Vol. 47, p. e60090, 2020.
DOI: 10.1029/2019GL085529

・Simulation of tropospheric nitrogen dioxide observation using a microsatellite-borne sensor:

Fujinawa, T., Noguchi, K., Kuze, A., Richter, A., Burrows, J. P., Meier, A. C., Sato, T. O., Kuroda, T., Yoshida, N., Kasai, Y.,
“Concept of small satellite UV/visible imaging spectrometer optimized for tropospheric NO₂ measurements in air quality monitoring”,
Acta Astronautica, Vol. 160, pp. 421-432, 2019.
DOI: 10.1016/j.actaastro.2019.03.081

・Using satellite remote sensing data, rate constant of the reaction of ClO + HO₂ → HOCl + O₂ was directly estimated.

Kuribayashi, K., Sagawa, H., Lehmann, R., Sato, T. O., and Kasai, Y.,
“Direct estimation of the rate constant of the reaction ClO + HO₂ → HOCl + O₂ from SMILES atmospheric observations”,
Atmospheric Chemistry and Physics, Vol. 14, pp. 255-266, 2014.
DOI: 10.5194/acp-14-255-2014

・Comparison and validation of chlorine monoxide observations by the SMILES sensor on the International Space Station:

Sagawa, H., Sato, T. O., Baron, P., Dupuy, E., Livesey, N., Urban, J., von Clarmann, T., de Lange, A., Wetzel, G., Kagawa, A., Murtagh, D., and Kasai, Y.
“Comparison of SMILES ClO profiles with satellite, balloon-borne and ground-based measurements”,
Atmospheric Measurement Techniques, Vol. 6, pp. 3325-3347, 2013.
DOI: 10.5194/amt-6-3325-2013

・Comparison and validation of ozone observations by the SMILES sensor on the International Space Station:

Kasai, Y., Sagawa, H., Kreyling, D., Suzuki, K., Dupuy, E., Sato, T. O., Mendrok, J., Baron, P., Nishibori, T., Mizobuchi, S., Kikuchi, K., Manabe, T., Ozeki, H., Sugita, T., Fujiwara, M., Irimajiri, Y., Walker, K. A., Bernath, P. F., Boone, C., Stiller, G., von Clarmann, T., Orphal, J., Urban, J., Murtagh, D., Llewellyn, E. J., Degenstein, D., Bourassa, A. E., Lloyd, N. D., Froidevaux, L., Birk, M., Wagner, G., Schreier, F., Xu, J. Vogt, P., Trautmann, T., and Yasui, M.,
“Validation of stratospheric and mesospheric ozone observed by SMILES from International Space Station”,
Atmospheric Measurement Techniques, Vol. 6, pp. 2311-2338, 2013.
DOI: 10.5194/amt-6-2311-2013

・Diurnal variations of HOCl, ClO, and HO₂ were derived from satellite remote sensing and one-dimensional model:

Khosravi, M., Baron, P., Urban, J., Froidevaux, L., Jonsson, A. I., Kasai, Y., Kuribayashi, K., Mitsuda, C., Murtagh, D. P., Sagawa, H., Santee, M. L., Sato, T. O., Shiotani, M., Suzuki, M., von Clarmann, T., Walker, K. A., and Wang, S.
“Diurnal variation of stratospheric and lower mesospheric HOCl, ClO and HO₂ at the equator: comparison of 1-D model calculations with measurements by satellite instruments”,
Atmospheric Chemistry and Physics, Vol. 13, pp. 7587-7606, 2013.
DOI: 10.5194/acp-13-7587-2013

The others: in researchmap my-page: https://researchmap.jp/tosato14?lang=en