Top News

Paper Published in Climate of the Past

January 28, 2025

Pfeiffer, M., Takayanagi, H., Reuning, L., Watanabe, T. K., Ito, S., Garbe-Schönberg, D., Watanabe, T., Wu, C.-C., Shen, C.-C. Zinke, J., Brummer, G.-J. A. & Cahyarini, S. Y. (2025). A sub-fossil coral Sr/Ca record documents northward shifts of the Tropical Convergence Zone in the eastern Indian Ocean. Climate of the Past, 21(1), 211-237. DOI: 10.5194/cp-21-211-2025

Paper Published in Science of The Total Environments

December 10, 2024

Link to Article

Naciri, W., Boom, A., Watanabe, T. K., Garbe-Schönberg, D., Hathorne, E., Nagarajan, R., Browne, N., McIlwain, J. & Zinke, J. (2024). Paired coral Sr/Ca and δ18O records reveal increasing ENSO influence on Malaysian Borneo's hydroclimate. Science of The Total Environment, 955, 176943. DOI: 10.1016/j.scitotenv.2024.176943

Paper Published in Scientific Reports

December 07, 2022

Link to Article

Press Release (Hokkaido Univ.)

Watanabe, T. K., Phan, T. T., Yamazaki, A. Chiang, H.‑W. Shen, C.-C. Doan, L. D. & Watanabe, T.

Nonstationary footprints of ENSO in the Mekong River Delta hydrology. Sci. Rep. 12, 21186 (2022). DOI: 10.1038/s41598-022-20597-7

Paper Published in Geophysical Research Letters

May 24, 2021

Link to Article

Press Release (Hokkaido Univ.)

Watanabe, T. K., Watanabe, T., Pfeiffer, M., Hu, H.-M., Shen, C.-C. & Yamazaki, A. Corals reveal an unprecedented decrease of Arabian Sea upwelling during the current warming era. Geophys. Res. Lett. 48 (10), e2021GL092432 (2021). DOI: 10.1029/2021GL092432

Paper Published in Geology

October 2, 2019

Link to Article

Press Release (Hokkaido Univ.)

Watanabe, T. K., Watanabe, T., Yamazaki, A. & Pfeiffer, M. Oman corals suggest that a stronger winter shamal season caused the Akkadian Empire (Mesopotamia) collapse. Geology 47(12), 1141–1145 (2019). DOI: 10.1130/G46604.1

Research Interests

Specialities:

Paleoceanography, Paleoclimatology,

Geochemistry, Sclerochronology

My research interest is the relationship between human activity and climate systems. My approach is establishing high-/ultra-high-resolution archives using biogenic carbonate (e.g., coral and bivalves).

Please see also Publications and CV.

Keywords:

- Coral, Bivalve

- Oxygen isotopes, Strontium-Calcium ratio (Sr/Ca), Barium-Calcium ratio (Ba/Ca), U-Th dating

- IR-MS, ICP-OES, ICP-MS, Laser-ablation

- Upwelling, Monsoon, Indian Ocean Dipole (IOD), ENSO

- Oman, Arabian Sea, Amami Islands (Japan), Red Sea, Hawaii, Indonesia, Canary Islands, Cape Verde, Mesophotic zone