Environmental Geochemical Cycle Research Group
Senior Researcher

Research Interests

  • Remote sensing applications to understand the impacts of global climatic changes and anthropogenic activities on the ocean and coastal water environments
  • Remote sensing application to understand severe weather event of tropical cyclone on marine biological production
  • Remote sensing applications for harmful algal bloom detection
  • Satellite-based phytoplankton biomass and primary production algorithm developments


Earth Surface System Research Center
Japan Agency for Marine-Earth Science and Technology
3173-25, Showa-machi, Kanazawa-ku, Yokohama, Kanagawa, 236-0001, Japan


2003 M.Sc., Nagasaki University, Japan
2006 Ph.D., Nagasaki University, Japan
2006 ~ 2007 Seikai National Fisheries Research Institute, Nagasaki, Japan
2007 ~ 2011 Hydrospheric Atmospheric Research Center (HyARC), Nagoya University, Japan
2011 ~ 2013 Malaysia University of Technology (UTM), Malaysia
2013 ~ Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Japan


  • 35. Sari, Q.W., Utari, P.A., Setiabudidaya, D., Yustian, I., Siswanto, E., Iskandar, I. (2019), Surface chlorophyll-a variations in the southeastern tropical Indian Ocean during various types of the positive Indian Ocean dipole events, International Journal of Remote Sensing (accepted).
  • 34. Sasai, Y., Honda, M.C., Siswanto, E., Kato, S., Uehara, K., Sasaki, H., Nanoka, M. (2019), Impact of Ocean Physics on Marine Ecosystems in the Kuroshio and Kuroshio Extension Regions, In: Kuroshio Current: Physical, Biogeochemical, and Ecosystem Dynamics, Eds: Nagai, T., Saito, H., Suzuki, K., Takahashi, M., Geophysical Monograph Series, Chapter 11.
  • 33. Honda, M.C., Sasai, Y., Siswanto, E., Kuwano-Yoshida, A., Aiki, H., Cronin, M.F. (2018), Impact of cyclonic eddies and typhoons on biogeochemistry in the oligotrophic ocean based on biogeochemical/physical/meteorological time-series at station KEO, Progress in Earth and Planetary Science, 5: 42.
  • 32. Sari, Q.W., Siswanto, E., Setiabudidaya, D., Yustian, I., Iskandar, I. (2018), Spatial and temporal variability of surface chlorophyll-a in the Gulf of Tomini, Sulawesi, Indonesia, Biodiversitas, 19, 793-801.
  • 31. Siswanto, E., Xu, Y., Ishizaka, J. (2018), A rare dispersion of low‐salinity, high‐gelbstoff, high‐primary production water in the East China Sea during the summer of 2010: Possible influence of the ENSO, Journal of Geophysical Research: Oceans, 123(4), 2757-2767.
  • 30. Yasunaka, S., Siswanto, E., Olsen, A., Hoppema, M., Watanabe, E., Fransson, A., Chierici, M., Murata, A., Lauvset, S.K., Wanninkhof, R., Takahashi, T., Kosugi, N., Omar, A.M., Heuven, S., Mathis, J.T. (2018), Arctic Ocean CO2 uptake: an improved multiyear estimate of the air–sea CO2 flux incorporating chlorophyll a concentrations, Biogeosciences, 15(6), 1643-1661.
  • 29. Honda, M.C., Wakita, M., Matsumoto, K., Fujiki, T., Siswanto, E., Sasaoka, K., Kawakami, H., Mino, Y., Sukigara, C., Kitamura, M., Sasai, K., Smith, S.L., Hashioka, T., Yoshikawa, C., Kimoto, K., Watanabe, S., Kobari, T., Nagata, T., Hamasaki, K., Kaneko, R., Uchimiya, M., Fukuda, H., Abe, O., Saino, T. (2017), Comparison of carbon cycle between the western Pacific subarctic and subtropical time-series stations: highlights of the K2S1 project, Journal of Oceanography, 73(5), 647-667.
  • 28. Ye, H., Sheng, J., Tang, D., Siswanto, E., Kalhoro, M.A., Sui, Y. (2017), Storm-induced changes in pCO2 at the sea surface over the northern South China Sea during Typhoon Wutip, Journal of Geophysical Research: Oceans, 122, 4761-4778.
  • 27. Siswanto, E., Ye, H., Yamazaki, D., Tang, D. (2017), Detailed spatiotemporal impacts of El Niño on phytoplankton biomass in the South China Sea, Journal of Geophysical Research: Oceans, 122(4), 2709-2723.
  • 26. Son, T.P.H., Chung, T.V., Huan, N.H., Tien, N.M., Tac, V.V., Khang, N.H.T., Hoi, N.T.T., Herrmann, M., Siswanto, E. (2017), Abnormal features of oceanographic characteristics in upwelling Vietnam waters under impact of El Niño events, Vietnam Journal of Earth Sciences, 39(3), 225-239.
  • 25. Siswanto, E., Honda, M.C., Sasai, K., Sasaoka, K., Saino, T. (2016), Meridional and seasonal footprints of the Pacific Decadal Oscillation on phytoplankton biomass in the northwestern Pacific Ocean, Journal of Oceanography, 72, 465-477, doi:10.1007/s10872-016-0367-z.
  • 24. Siswanto, E., Honda, M.C., Matsumoto, K., Sasai, Y., Fujiki, T., Sasaoka, K., and Saino, T. (2016), Sixteen-year phytoplankton biomass trends in the northwestern Pacific Ocean observed by the SeaWiFS and MODIS ocean color sensors, Journal of Oceanography, 72,479-489, doi:10.1007/s10872-016-0357-1
  • 23. Siswanto, E. (2015), Atmospheric deposition—Another source of nutrients enhancing primary productivity in the eastern tropical Indian Ocean during positive Indian Ocean Dipole phases, Geophysical Research Letters, 42, 5378–5386, doi:10.1002/2015GL064188.
  • 22. Siswanto, E., Matsumoto, K., Honda, M.C., Fujiki, T., Sasaoka, K., and Saino, T. (2015), Reappraisal of meridional differences of factors controlling phytoplankton biomass and initial increase preceding seasonal bloom in the northwestern Pacific Ocean, Remote Sensing of Environment, 159, 44-56, doi:10.1016/j.rse.2014.11.028.
  • 21. Siswanto, E., Katsuhisa, T. (2014), Phytoplankton biomass dynamics in the Strait of Malacca within the period of the SeaWiFS full mission: Seasonal cycles, interannual variations, and decadal-scale trend, Remote Sensing, 6, 2718-2742.
  • 20. Yamaguchi, H., Ishizaka, J., Siswanto, E., Son, Y.B., Yoo, S., and Kiyomoto, Y. (2013), Seasonal and spring interannual variations in satellite-observed chlorophyll-a in the Yellow and East China Seas: New datasets with reduced interference from high concentration of resuspended sediment, Continental Shelf Research, 59, 1-9.
  • 19. Xu, Y., Ishizaka, J., Yamaguchi, H., Siswanto, E., and Wang, S. (2013), Relationships of interannual variability in SST and phytoplankton blooms with giantjellyfish (Nemopilema nomurai) outbreaks in the Yellow Sea and East China Sea, Journal of Oceanography, 69, 511-526.
  • 18. Siswanto, E., Ishizaka, J., Tripathy, S. C., and Miyamura, K. (2013), Detection of harmful algal blooms of Karenia mikimotoi using MODIS measurements: a case study of Seto-Inland Sea, Japan, Remote Sensing of Environment, 129, 185-196, doi:10.1016/j.rse.2012.11.003.
  • 17.Yi, L.J., Sarker, M.L.R., Zhang, L., Siswanto, E., Mubin, A., and Sabarudin, S. (2013), Monitoring long-term ocean health using remote sensing: A case study of the Bay of Bengal, Proc. SPIE888, 88880K, doi:10.1117/12.2029032.
  • 16. Siswanto, E. and Hashim, M. (2012): A data fusion study on the impacts of the 2011 Japan tsunami on the marine environment of Sendai Bay, International Journal of Image and Data Fusion, 3:2, 191-198.
  • 15. Siswanto, E., and Tanaka, K. (2012), Spatial and temporal variations of satellite-derived phytoplankton biomass in the Malacca Straits, Proc. SPIE8525, 8525K, doi:10.1117/12977408.
  • 14. Tripathy, S.C., Ishizaka, J., Siswanto, E., Shibata, T., and Mino, Y. (2012), Modification of the vertically generalized production model for the turbid waters of Ariake Bay, southwestern Japan, Continental Shelf Research, 97, 66-77.
  • 13. Siswanto, E., Tang, J., Ahn, Y.-H., Ishizaka, J., Yoo, S., Kim, S.-W., Kiyomoto, Y., Yamada, K., Chiang, C., and Kawamura H. (2011), Empirical ocean color algorithms to retrieve chlorophyll-a, total suspended matter, and colored dissolved organic matter absorption coefficient in the Yellow and East China Seas, Journal of Oceanography, doi:10.1007/s10872-011-0062-z.
  • 12. Sasaki, H., Siswanto, E., Gomi, Y., Nishiuchi, K., Okamura, K., Hasegawa, T., and Ishizaka, J. (2010), Ocean color satellite-based low salinity variation and its relation to giant jellyfish (Nemopilema nomurai) in the East China Sea during spring – summer period, Umi to Sora, 86, 1-11 (in Japanese).
  • 11. Siswanto, E., Morimoto, A., and Kojima, S. (2009), Enhancement of phytoplankton primary productivity in the southern East China Sea following episodic typhoon passage, Geophysical Research Letters, Vol.36, L11603, doi:10.1029/2009GL037883.
  • 10. Siswanto, E., Nakata, H., Matsuoka, Y., Tanaka, K., Kiyomoto, Y., Okamura, K., Zhu, J., and Ishizaka, J. (2008), The long-term freshening and nutrient increases in summer surface water in the northern East China Sea in relation to Changjiang discharge variation, Journal of Geophysical Research, Vol.113, C10030, doi:10.1029/2008JC004812.
  • 9. Siswanto, E., Ishizaka, J., Morimoto, A., Tanaka, K., Okamura, K., Kristijono, A., and Saino, T. (2008), Ocean physical and biogeochemical responses to the passage of Typhoon Meari in the East China Sea observed from Argo float and multiplatform satellites, Geophysical Research Letters, Vol.35, L15604, doi:10.1029/2008GL035040.
  • 8. Sasaki, H., Tanaka, A., Iwataki, I., Touke, Y., Siswanto, E., Tan, C.K., and Ishizaka, J. (2008), Optical properties of the red tide in Isahaya Bay, southwestern Japan: influence of chlorophyll-a concentration, Journal of Oceanography, Vol.64(4), 511-523.
  • 7. Sasaki, H., Siswanto, E., Nishiuchi, K., Tanaka, K., Hasegawa, T., Ishizaka, J. (2008), Mapping the low salinity Changjiang Diluted Water using satellite-retrieved colored dissolved organic matter (CDOM) in the East China Sea during high river flow season, Geophysical Research Letters, Vol.35, L04604, doi:10.1029/2007GL032637.
  • 6. Sasaki, H., Siswanto, E., Nishiuchi, K., Tanaka, K., Hasegawa, T., and Ishizaka, J. (2007), Bio-optical property of colored dissolved organic matter (CDOM) during summer and its spatial distribution estimation using ocean color satellite, Umi to Sora, 82, 73-79 (in Japanese).
  • 5. Tan, C.K., Ishizaka, J., Manda, A. Siswanto, E. and Tripathy, S.C. (2007), Assessing post tsunami effects on ocean color at eastern Indian Ocean using MODIS Aqua satellite, International Journal of Remote Sensing, Vol. 28(13-14), 3055-3069.
  • 4. Ishizaka, J., Siswanto, E., Itoh, T., Murakami, H., Yamaguchi, Y., Horimoto, N., Ishimaru, T., Hashimoto, S., and Saino, T. (2007), Verification of vertically generalized production model and estimation of primary production in the Sagami Bay, Japan, Journal of Oceanography, Vol. 63(3), 517-524.
  • 3. Siswanto, E., Ishizaka, J., Yokouchi, K., Tanaka, K. and Tan, C.K. (2007), Estimation of interannual and interdecadal variations of typhoon-induced primary production: A case study for the outer shelf of the East China Sea, Geophysical Research Letters, Vol. 34, L03604, doi: 10.1029/2006GL028368.
  • 2. Siswanto, E., Ishizaka, J. and Yokouchi, K. (2006), Optimal primary production model and parameterization in the eastern East China Sea, Journal of Oceanography, Vol. 62(3), 361-372.
  • 1. Siswanto, E., Ishizaka, J. and Yokouchi, K. (2005), Estimating chlorophyll-a vertical profiles from satellite data and the implication for primary production in the Kuroshio front of the East China Sea, Journal of Oceanography, Vol. 61(3), 575-589.