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| Job title |
Senior Researcher/The 2nd lab./Department of Observation and Data Assimilation Research |
| E-mail |
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| Personal |
Researchmap ORCID
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| Expertise |
Lidar (Raman, DIAL and Mie/Rayleigh) for measuring water vapor, aerosol, cloud, and ozone |
| Degree |
Doctor of Science, Nagoya University |
| Project |
- Development of advanced water vapor observation systems via integration of ground-based remote sensing technology and other techniques
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| Publications |
Huang, Y., J. Kok, K. Kandler, H. Lindqvist, T. Nousiainen, T. Sakai, A. Adebiyi, O. Jokinen, 2020: Climate models and remote sensing retrievals neglect substantial desert dust asphericity. Geophys. Res. Lett., 47, e2019GL086592.
Yoshida, S., S. Yokota, H. Seko, T. Sakai, T. Nagai, 2020: Observation System Simulation Experiments of Water Vapor Profiles Observed by Raman Lidar using LETKF System. SOLA, 16, 43-50.
Sakai, T., Nagai, T., Izumi, T., Yoshida, S., and Shoji, Y., 2019: Automated compact mobile Raman lidar for water vapor measurement: instrument description and validation by comparison with radiosonde, GNSS, and high-resolution objective analysis. Atmos. Meas. Tech., 12, 313-326.
Bagtasa, G., M. G. Cayetano, C-S. Yuan, O. Uchino, T. Sakai, T. Izumi, I. Morino, T. Nagai, R. C. Macatangay, V. A. Velazco, 2019: ALong-range transport of aerosols from East and Southeast Asia to northern Philippines and its direct radiative forcing effect. Atmos. Environ., 218, 11707.
Velazco, V.A., I. Morino, O. Uchino, A. Hori, M. Kiel, B. Bukosa, N.M. Deutscher, T. Sakai, T. Nagai, G. Bagtasa, T. Izumi, Y. Yoshida, D.W.T. Griffith, 2017: TCCON Philippines: First measurement results, satellite data and model comparisons in Southeast Asia. Remote Sensing, 9, 1228.
Uchino, O., Sakai, T., Izumi, T., Nagai, T., Morino, I., Yamazaki, A., Deushi, M., Yumimoto, K., Maki, T., Tanaka, T. Y., Akaho, T., Okumura, H., Arai, K., Nakatsuru, T., Matsunaga, T., and Yokota, T., 2017: Lidar detection of high concentrations of ozone and aerosol transported from northeastern Asia over Saga, Japan. Atmospheric Chemistry and Physics, 17,1865-1879.
Sakai, T., O. Uchino, T. Nagai, B. Liley, I. Morino, and T. Fujimoto, 2016: Long-term variation of stratospheric aerosols observed with lidars over Tsukuba, Japan, from 1982 and Lauder, New Zealand, from 1992 to 2015. Journal of Geophysical Research-Atmosphere, 121,110283-10293.
Walker, M., D. Venable, D. N. Whiteman, T. Sakai, 2016: Application of the lamp mapping technique for overlap function for Raman lidar systems. Applied Optics, 55,2551-2558.
Ohyama, H., S. Kawakami, T. Tanaka, I. Morino, O. Uchino, M. Inoue, T. Sakai, T. Nagai, A. Yamazaki, A. Uchiyama, T. Fukamachi, M. Sakashita, T. Kawasaki, T. Akaho, K. Arai, and H. Okumura, 2015: Observations of XCO2 and XCH4 with ground-based high-resolution FTS at Saga, Japan, and comparisons with GOSAT products. Atmospheric Measurement Techniques, 8, 5263-5276.
Jin, Y., K. Kai, K. Kawai, T. Nagai, T. Sakai, A. Yamazaki, A. Uchiyama, D. Batdorj, N. Sugimoto, T. Nishizawa, 2015: Ceilometer calibration for retrieval of aerosol optical properties. Journal of Quantitative Spectroscopy and Radiative Transfer, 153, 49-56.
Sakai, T., O. Uchino, I. Morino, T. Nagai, T. Akaho, T. Kawasakai, H. Okumura, K. Arai, A. Uchiyama, A. Yamazaki, T. Matsunaga, T. Yokota, 2014: Vertical distribution and optical properties of volcanic ash from Mt. Sakurajima detected with lidar and skyradiometer over Saga. Journal of The Remote Sensing Society of Japan, 34, 197-204.
Ridley, D. A, S. Solomon, J. E. Barnes, V. D. Burlakov, T. Deshler, S. I. Dolgii, A. B. Herber, T. Nagai, R. R. Neely III, A.V. Nevzorov, C. Ritter, T. Sakai, B. D. Santer, M. Sato, A. Schmidt, O. Uchino and J. P. Vernier, 2014: Total volcanic stratospheric aerosol optical depths and implications for global climate change. Geophysical Research Letters, 41, 7763–7769. /doi:doi:10.1002/2014GL061541
Sakai, T., N. Orikasa, T. Nagai, M. Murakami, T. Tajiri, A. Saito, K. Yamashita, and A. Hashimoto, 2014: Balloon-borne and Raman lidar observations of Asian dust and cirrus cloud properties over Tsukuba, Japan. Journal of the Geophysical Research - Atmosphere, 119, 3295–3308. /doi:doi:10.1002/2013JD020987
Nakamae, K., O. Uchino, I. Morino, B. Liley, T. Sakai, T. Nagai, and T. Yokota, 2014: Lidar observation of the 2011 Puyehue-Cordón Caulle volcanic aerosols at Lauder, New Zealand. Atmospheric Chemistry and Physics, 14, 12099–12108. /doi:doi:10.5194/acp-14-12099-2014
Uchino, O., Sakai, T., Nagai, T., Morino, I., Maki, T., Deushi, M., Shibata, K., Kajino, M., Kawasaki, T., Akaho, T., Takubo, S., Okumura, H., Arai, K., Nakazato, M., Matsunaga, T., Yokota, T., Kawakami, S., Kita, K., and Sasano, Y., 2014: DIAL measurement of lower tropospheric ozone over Saga (33.24° N, 130.29° E), Japan, and comparison with a chemistry–climate model. Atmopsheric Measurement Techniques, 7, 1385-1394. /doi:doi:10.5194/amt-7-1385-2014
Whiteman, David N., D. D. Venable, M. Walker, M. Cadirola, T. Sakai, and I. Veselovskii, 2013: Assessing the temperature dependence of narrow-band Raman water vapor lidar measurements: a practical approach. Applied Optics, 52, 5376-5384. /doi:doi:10.1364/AO.52.005376
Sakai, T., D. N. Whiteman, F. Russo, D. D. Turner, I. Veselovskii, S. H. Melfi, T. Nagai, and Y. Mano, 2013: Liquid water cloud measurements using the Raman lidar technique: current understanding and future research needs. Journal of Atmospheric and Oceanic Technology, 30, 1337–1353.
Sakai, T., T. Nagai, Y. Mano, Y. Zaizen, and Y. Inomata, 2012: Aerosol optical and microphysical properties as derived from collocated measurements using polarization lidar and direct sampling. Atmospheric Environment, 60, 419–427.
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