Yoshimi KAWAI


Yoshimi KAWAI

Global Oceanic Environment Research Group,
Global Ocean Observation Research Center,
Research Institute for Global Change (RIGC)
Deputy Group Leader
Senior Scientist


Global Ocean Observation Research Center
Research Institute for Global Change (RIGC)
Japan Agency for Marine-Earth Science and Technology
2-15 Natsushima-Cho, Yokosuka, 237-0061
TEL: +81-46-867-9495
FAX: +81-46-867-9455

Research Interests

Mid- and high-latitudes air-sea interactions; Satellite remote sensing for oceanography

Curriculum Vitae

B.A.: Tohoku University, Faculty of Science, 1993
Ph.D: Tohoku University, Graduate School of Science (physical oceanography, remote sensing), 1998
1998-2000: Weathernews Inc.
2000-2006: Researcher, Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
2006-2009: Scientist, Institute of Observational Research for Global Change (IORGC), JAMSTEC
2009-present: Senior scientist, Research and Development Center for Global Change (RCGC), JAMSTEC

Social Activity

2009-2013, 2017-2021: Officer, the Oceanographic Society of Japan
2013-2015, 2019-2023: Representative, the Oceanographic Society of Japan
2009-2020: Board member: Executive secretary, Atmospheric and Hydrosphere Sciences section, Japan Geoscience Union (JpGU)
2016-2024: Representative, Atmospheric and Hydrosphere Sciences Section, JpGU

Publication with Peer Review


  • 47) Kawai, Y., and S. Hosoda (2021), Global mapping of 10-day differences of temperature and salinity in the intermediate layer observed with Argo floats. Journal of Oceanography, Vol.77, No.6, pp.879–895, doi:10.1007/s10872-021-00613-1.
  • 46) Kawai, Y., S. Hosoda, K. Uehara., and T. Suga (2021), Heat and salinity transport between the permanent pycnocline and the mixed layer due to the obduction process evaluated from a gridded Argo dataset. Journal of Oceanography, Vol.77, No.1, pp.75–92, doi:10.1007/s10872-020-00559-1.
  • 45) Ito, D., T. Suga, S. Kouketsu, E. Oka, and Y. Kawai, (2021), Spatiotemporal evolution of submesoscale filaments at the periphery of an anticyclonic mesoscale eddy north of the Kuroshio Extension. Journal of Oceanography, Vol.77, No.5, pp.763-780, doi: 10.1007/s10872-021-00607-4.
  • 44) Oka, E., S. Kouketsu, D. Yanagimoto, D. Ito, Y. Kawai,, S. Sugimoto, and B. Qiu (2020) Formation of Central Mode Water based on two zonal hydrographic sections in spring 2013 and 2016. Journal of Oceanography, Vol.76, No.5, pp.373–388, doi:10.1007/s10872-020-00551-9.
  • 43) Kawai, Y., S. Osafune, S. Masuda, and Y. Komuro (2018), Relations between salinity in the northwestern Bering Sea, the Bering Strait throughflow and sea surface height in the Arctic Ocean. Journal of Oceanography, Vol.74, No.3, pp.239-261, doi: 10.1007/s10872-017-0453-x.
  • 42) Kumamoto, Y., M. Aoyama, Y. Hamajima, H. Nagai, T. Yamagata, Y. Kawai,, E. Oka, A. Yamaguchi, K. Imai, and A. Murata (2017) Fukushima-derived radiocesium in the western North Pacific in 2014, Journal of Radioanalytical and Nuclear Chemistry, Vol.311, No.2, pp.1209– 1217, doi: 10.1007/s10967-016-5055-3.
  • 41) Kobashi, F., Y. Onikata, N. Iwasaka, Y. Kawai,, E. Oka, K. Uehara, S. Ito, M. Odamaki, and H. Sasaki (2016) Small meanders of the Kuroshio Extension and associated northward spreading of warm water: Three-vessel simultaneous observations and an eddy-resolving ocean model simulation, Journal of Geophysical Research-Oceans, Vol.121, pp.5315-5337, doi:10.1002/2016JC011969.
  • 40) Nagano, A., T. Suga, Y. Kawai,, M. Wakita, K. Uehara, and K. Taniguchi (2016) Ventilation revealed by the observation of dissolved oxygen concentration south of the Kuroshio Extension during 2012-2013, Journal of Oceanography, Vol.72, No.6, pp.837-850, doi:10.1007/s10872-016-0386-9.
  • 39) Faure, V., and Y. Kawai, (2015) Heat and salt budgets of the mixed layer around the subarctic front of the North Pacific Ocean. Journal of Oceanography, Vol.71, No.5, pp.527-539, doi:10.1007/s10872-015-0318-0.
  • 38) Toyoda, T., N. Sugiura, S. Masuda, Y. Sasaki, H. Igarashi, Y. Ishikawa, T. Hatayama, T. Kawano, Y. Kawai,, S. Kouketsu, K. Katsumata, H. Uchida, T. Doi, M. Fukasawa, and T. Awaji (2015) An improved simulation of the deep Pacific Ocean using optimally estimated vertical diffusivity based on the Green’s function method. Geophysical Research Letters, Vol.42, pp.9916-9924, doi:10.1002/2015GL065940.
  • 37) Nagano, A., K. Uehara, T. Suga, Y. Kawai,, H. Ichikawa, and M. F. Cronin (2014) Origin of near-surface high-salinity water observed in the Kuroshio Extension region. Journal of Oceanography, Vol.70, No.4, pp.389-403, doi:10.1007/s10872-014-0237-5.
  • 36) Cronin, M. F., N. A. Bond, J. T. Farrar, H. Ichikawa, S. R. Jayne, Y. Kawai,, M. Konda, B. Qiu, L. Rainville, and H. Tomita (2013) Formation and erosion of the seasonal thermocline in the Kuroshio Extension recirculation gyre. Deep-Sea Research II, Vol.85, pp.62-74, doi:10.1016/j.dsr2.2012.07.018.
  • 35) Oka, E., A. Isobe, K. Ichikawa, Y. Masumoto, T. Suga, Y. Kawai,, K. I. Ohshima, K. Shimada, H. Hasumi, S. Minobe, T. Waseda, N. Iwasaka, M. Kawamiya, S. Itoh, M. Kubota, T. Nakano, T. Hibiya, and H. Yoritaka (2013) Decadal vision in oceanography (I) –Discussions in the physical oceanography subgroup of the future planning committee, The Oceanographic Society of Japan–. Oceanography in Japan (Umi no Kenkyu), Vol.22, No.6, pp.191-218. (in Japanese with English abstract) https://kaiyo-gakkai.jp/jos/uminokenkyu/vol22/22-6/22-6-oka.pdf
  • 34) Masuda, S., T. Awaji, N. Sugiura, J. P. Matthews, T. Toyoda, Y. Kawai,, T. Doi, S. Kouketsu, H. Igarashi, K. Katsumata, H. Uchida, T. Kawano, and M. Fukasawa (2010) Simulated rapid warming of abyssal North Pacific waters. Science, Vol.329, pp.319-322, doi:10.1126/science.1188703.
  • 33) Kawano, T., T. Doi, H. Uchida, S. Kouketsu, M. Fukasawa, Y. Kawai,, K. Katsumata (2010) Heat content change in the Pacific Ocean between the 1990Ss and 2000s. Deep-Sea Research II, Vol.57, pp.1141-1151, doi:10.1016/j.dsr2.2009.12.003.
  • 32) Kawai, Y., T. Doi, H. Tomita, and H. Sasaki (2008) Decadal-scale changes in meridional heat transport across 24ºN in the Pacific Ocean. Journal of Geophysical Research, Vol.113, C08021, doi:10.1029/2007JC004525.

Air-sea interaction / Meteorology

  • 31) Kawai, Y. (2021), Low-level atmospheric responses to the sea surface temperature fronts in the Chukchi and Bering Seas. Frontiers in Marine Science, Vol.8, 598981, doi:10.3389/fmars.2021.598981.
  • 30) Kawai, Y., H. Nishikawa, and E. Oka (2019), In situ evidence of low-level atmospheric responses to the Oyashio front in early spring. Journal of the Meteorological Society of Japan, Vol.97, No.2, pp.423-438, http://doi.org/10.2151/jmsj.2019-024.
  • 29) Kawai, Y., M. Katsumata, K. Oshima, M. E. Hori, and J. Inoue (2017) Comparison of Vaisala radiosondes RS41 and RS92 launched over the oceans from the Arctic to the tropics. Atmospheric Measurement Techniques, Vol.10, pp.2485-2498, doi:10.5194/amt-10-2485-2017.
  • 28) Kawai, Y., Q. Moteki, A. Kuwano-Yoshida, T. Enomoto, A. Manda, and H. Nakamura (2017) Impact propagation of radiosonde data assimilation over the Kuroshio and Kuroshio Extension: Case study on the early summer (Baiu) in 2012. Journal of the Meteorological Society of Japan, Vol.95, No.2, pp.71-90, http://doi.org/10.2151/jmsj.2017-004.
  • 27) Hu, W., K. Murata, S. Fukuyama, Y. Kawai,, E. Oka, M. Uematsu, and D. Zhang (2017) Concentration and viability of airborne bacteria over the Kuroshio Extension region in the northwestern Pacific Ocean: Data from three cruises. Journal of Geophysical Research-Atmosphere, 122, 12892-12905, doi:10.1002/2017JD027287.
  • 26) Nishikawa, H., Y. Tachibana, Y. Kawai,, M. K. Yoshioka, and H. Nakamura (2016) Evidence for SST-forced anomalous winds revealed from simultaneous radiosonde launches from three ships across the Kuroshio Extension front, Monthly Weather Review, Vol.144, pp.3553-3567, doi:10.1175/MWR-D-15-0442.1.
  • 25) Kawai, Y., T. Miyama, S. Iizuka, A. Manda, M. Yoshioka, S. Katagiri, Y. Tachibana, and H. Nakamura (2015) Marine atmospheric boundary layer and low-level cloud responses to the Kuroshio Extension front in the early summer of 2012: Three-vessel simultaneous observations and numerical simulations. Journal of Oceanography, Vol.71, No.5, pp.511-526, doi:10.1007/s10872-014-0266-0.
  • 24) Kawai, Y., H. Tomita, M. F. Cronin, and N. A. Bond (2014) Atmospheric pressure response to mesoscale sea surface temperature variations in the Kuroshio Extension: In situ evidence. Journal of Geophysical Research: Atmospheres, Vol.119, No.13, pp.8015-8031, doi:10.1002/2013JD021126.
  • 23) Waseda, T., M. Sinchi, K. Kiyomatsu, T. Nishida, S. Takahashi, S. Asaumi, Y. Kawai,, H. Tamura, and Y. Miyazawa (2014) Deep water observations of extreme waves with moored and free GPS buoys. Ocean Dynamics, Vol.64, No.9, pp.1269-1280, doi:10.1007/s10236-014-0751-4.
  • 22) Tomita, H., S.-P. Xie, H. Tokinaga, and Y. Kawai, (2013) Cloud response to the meandering Kuroshio Extension front. Journal of Climate, Vol.26, No.23, pp.9393-9398, doi:10.1175/JCLI-D-13-00133.1.
  • 21) Wada, A., M. F. Cronin, A. J. Sutton, Y. Kawai,, and M. Ishii (2013) Numerical simulations of oceanic pCO2 variations and interactions between Typhoon Choi-wan (0914) and the ocean. Journal of Geophysical Research: Oceans, Vol.118, pp.2667-2684, doi:10.1002/jgrc.20203.
  • 20) Bond, N. A., M. F. Cronin, C. Sabine, Y. Kawai,, H. Ichikawa, P. Freitag, and K. Ronnholm (2011) Upper-ocean response to typhoon Choi-Wan as measured by the Kuroshio Extension Observatory (KEO) mooring. Journal of Geophysical Research, Vol.116, C02031, doi:10.1029/2010JC006548.
  • 19) Wada, A., N. Kohno, and Y. Kawai, (2010) Impact of wave-ocean interaction on Typhoon Hai-Tang in 2005. SOLA, Vol. 6A, pp.13-16, doi:10.2151/sola.6A-004.
  • 18) Wada, A., K. Sato, N. Usui, and Y. Kawai, (2009) Comment on ‘‘Importance of pre-existing oceanic conditions to upper ocean response induced by Super Typhoon Hai-Tang’’ by Z.-W. Zheng, C.-R. Ho, and N.-J. Kuo. Geophysical Research Letter, Vol. 36, L09603, doi:10.1029/2008GL036890.

Remote sensing / Diurnal SST variation

  • 17) Tomita, H., Y. Kawai,, M. F. Cronin, T. Hihara, and M. Kubota (2015) Validation of AMSR2 sea surface wind and temperature over the Kuroshio Extension region. SOLA, Vol.11, pp.43-47, doi:10.2151/sola.2015-010.
  • 16) Kawai, Y., and A. Wada (2011) Detection of cyclone-induced rapid increases in chlorophyll-a with sea surface cooling in the northwestern Pacific Ocean from a MODIS/SeaWiFS merged satellite chlorophyll product. International Journal of Remote Sensing, Vol.32, No.24, pp.9455-9471, doi:10.1080/01431161.2011.562252.
  • 15) Kawai, Y., K. Ando, and H. Kawamura (2009) Distortion of near-surface seawater temperature structure by a moored-buoy hull and its effect on skin temperature and heat flux estimates. Sensors, Vol.9, No.8, pp.6119-6130, doi:10.3390/s90806119.
  • 14) Sakaida, F., H. Kawamura, S. Takahashi, T. Shimada, Y. Kawai,, K. Hosoda, and L. Guan (2009) Research, development, and demonstration operation of the New Generation Sea Surface Temperature for Open Ocean (NGSST-O) product. Journal of Oceanography, Vol. 65, pp.859-870, doi:10.1007/s10872-009-0071-3.
  • 13) Kawai, Y., and A. Wada (2007) Diurnal sea surface temperature variation and its impact on the atmosphere and ocean: A review. Journal of Oceanography, Vol. 63, No. 5, pp.721-744, doi:10.1007/s10872-007-0063-0.
  • 12) Qin, H., H. Kawamura, and Y. Kawai, (2007) Detection of hot event in the equatorial Indo-Pacific warm pool using advanced satellite sea surface temperature, solar radiation, and wind speed. Journal of Geophysical Research, Vol. 112, C07015, doi:10.1029/2006JC003969.
  • 11) Kawai, Y., H. Kawamura, S. Tanba, K. Ando, K. Yoneyama, and N. Nagahama (2006) Validity of sea surface temperature observed with the TRITON buoy under diurnal heating conditions. Journal of Oceanography, Vol. 62, No. 6, pp.825-838, doi:10.1007/s10872-006-0101-3.
  • 10) Kawai, Y., K. Otsuka, and H. Kawamura (2006) Study on diurnal sea surface warming and a local atmospheric circulation over Mutsu Bay. Journal of the Meteorological Society of Japan, Vol.84, No. 4, pp.725-744, doi:10.2151/jmsj.84.725.
  • 9) Kawai, Y., H. Kawamura, S. Takahashi, K. Hosoda, H. Murakami, M. Kachi, and L. Guan (2006) Satellite-based high-resolution global optimum interpolation sea surface temperature data. Journal of Geophysical Research, Vol. 111, C06016, doi:10.1029/2005JC003313.
  • 8) Qin, H., Y. Kawai,, and H. Kawamura (2006) Comparison of downward surface solar radiation derived from GMS5/VISSR and of reanalysis products. Journal of Oceanography, Vol. 62, No. 4, pp.577-586, doi:10.1007/s10872-006-0077-z.
  • 7) Kawai, Y., and H. Kawamura (2005) Spatial and temporal variations of model-derived diurnal amplitude of sea surface temperature in the western Pacific Ocean. Journal of Geophysical Research, Vol. 110, C08012, doi:10.1029/2004JC002652.
  • 6) Kawai, Y., and H. Kawamura (2005) Validation and improvement of satellite-derived surface solar radiation over the northwestern Pacific Ocean. Journal of Oceanography, Vol. 61, No. 1, pp.79-89, doi:10.1007/s10872-005-0021-7.
  • 5) Kawai, Y., and H. Kawamura (2003) Validation of daily amplitude of sea surface temperature evaluated with a parametric model using satellite data. Journal of Oceanography, Vol. 59, No. 5, pp.637-644, doi:10.1023/B:JOCE.0000009593.84009.d2.
  • 4) Kawai, Y., and H. Kawamura (2002) Evaluation of the diurnal warming of sea surface temperature using satellite-derived marine meteorological data. Journal of Oceanography, Vol.58, No. 6, pp.805-814, doi:10.1023/A:1022867028876.
  • 3) Kawai, Y., and H. Kawamura (2000) Study on a platform effect in the in situ sea surface temperature observations under weak wind and clear sky conditions using numerical models. Journal of Atmospheric and Oceanic Technology, Vol. 17. No. 2, pp.185-196, doi:10.1175/1520-0426(2000)017<0185:SOAPEI>2.0.CO;2.
  • 2) Kawai, Y., and H. Kawamura (1997) Seasonal and diurnal variability of differences between satellite-derived and in situ sea surface temperatures in the south of the Sea of Okhotsk. Journal of Oceanography, Vol. 53, No. 4, pp.343-354.
  • 1) Kawai, Y., and H. Kawamura (1997) Characteristics of the satellite-derived sea surface temperature in the oceans around Japan. Journal of Oceanography, Vol. 53, No. 2, pp.161-172.

Publication without Peer Review

  • 6) 川合義美、大気海洋相互作用と黒潮・黒潮続流域観測、月刊海洋、Vol.52, No.7, pp.300-307、2020年 (今後の黒潮と周辺海域の国際共同観測を考える:通巻596号)
  • 5) 中村尚、磯辺篤彦、立花義裕、早坂忠裕、川村隆一、野中正見、川合義美、見延庄士郎、三寺史夫、吉田聡、2017年春季大会シンポジウム「最新の気象学が描き出す多彩な大気海洋結合現象」の報告, 4. 気候系のHotspot:中緯度の暖流や水温前線が及ぼす気候系への影響、天気、Vol.66、No.1、pp.32-38、2019年
  • 4) Nakamura, H., Y. Kawai, R. Masunaga, H. Kamahori, C. Kobayashi, and M. Koike (2016) An extra product of the JRA-55 atmospheric reanalysis and in situ observations in the Kuroshio-Oyashio Extension under the Japanese “Hotspot Project”. CLIVAR Exchange, Vol.20, No.1, pp.22-26.
  • 3) 川合義美・猪上淳・米山邦夫・勝俣昌己、今後の大気研究における海洋観測船の重要性、月刊海洋、Vol.44, No.12, pp.648-652、2012年
  • 2) 川合義美、極表層水温塩分観測と大気海洋相互作用研究、月刊海洋、Vol.42、No.12、pp.678-683、2010年.
  • 1) 川合義美、「コメント:海氷域の広域の熱フラックスの定量的見積もりについて」2009年春季極域・寒冷域研究連絡会の報告、山崎孝治他、天気、Vol.56、No.12、pp.1013-1017、2009年.


  • 4) 川合義美・小橋史明・永野憲・早稲田卓爾・富田裕之・伊藤進一・岡英太郎・須賀利雄・植原量行・細田滋毅・谷本陽一・小池真、第5章「現場観測による黒潮・親潮続流域の大気海洋相互作用研究」、中村尚・川村隆一編 気象研究ノート第244号「気候系のHotspot:中緯度大気海洋相互作用研究の新展開」、pp.131-161、2021年、日本気象学会
  • 3) 中村尚・川合義美・伊藤進一・小池真・和田章義・国井勝・嶋田宇大・榎本剛・吉田聡・釜堀弘隆・升永竜介・小林ちあき・岡島悟、第14章「コミュニティーへの公開データ」、中村尚・川村隆一編 気象研究ノート第244号「気候系のHotspot:中緯度大気海洋相互作用研究の新展開」、pp.341-353、2021年、日本気象学会
  • 2) 川合義美、第7章「宇宙と船から見た海と空の研究」、筆保弘徳・和田章義編 「天気と海の関係についてわかっていることいないこと」、pp.245-292、2016年、ベレ出版
  • 1) 川合義美、「海面境界過程 大気・海洋との相互作用」、吉崎正憲・野田彰他編 「図説地球環境の事典」、pp.194-195、2013年、朝倉書店