We study regional and global climate systems.

Specific topics are:

  • Atmospheric hydrological cycle on regional and global scales
  • Asian monsoon
  • Cloud and precipitation over the Asian monsoon region
  • Role of land surface conditions on rainfall characteristics (Land-atmospheric interaction)
  • Impact of land-use change on regional climate

  • Data analysis (atmospheric circulation (JRA55), satellite derived rainfall and cloud datasets(TRMM/GPM/Himawari), aerosol)
  • Climate modeling(regional: WRF, global CMIP outputs)
  • Observations

Key words (too many?)

Climate system, Hydrological cycle in the atmospheric branch, cloud-precipitation climatology, Asian monsoon, snowfall on the Japan Sea side of Japan, Land-atmosphere interaction (soil-precipitation feedback), Urban climatology, Aerosol-cloud inetraction, water vapor variability, global warming, climate change, regional climate model, global climate model, satellite observation (TRMM/GPM), ocean-atmosphere interaction

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Past News

New paper will be published.
Takahashi, Hiroshi G., 2020: Long‐term trends in snowfall characteristics and extremes in Japan from 1961 to 2012. International Journal of Climatology, doi: 10.1002/joc.6960. [Web Page]

We have started using Tweeter.

New paper will be published.
Takahashi, Hiroshi G., and Takuya Yamazaki, 2020: Impact of sea surface temperature near Japan on the extra-tropical cyclone induced heavy snowfall in Tokyo by a regional atmospheric model, SOLA, doi:10.2151/sola.2020-035. [Web Page]

New paper will be published.
Takahashi, H. G., N. Kamizawa, T. Nasuno, Y. Yamada, C. Kodama, S. Sugimoto, and M. Satoh, 2020: Response of the Asian Summer Monsoon Precipitation to Global Warming in a High-Resolution Global Nonhydrostatic Model. J. Climate, doi:10.1175/JCLI-D-19-0824.1. [Web Page]

New paper will be published.
Rakesh T. Konduru and Hiroshi G. Takahashi, 2020: Effects of convection representation and model resolution on diurnal precipitation cycle over the Indian monsoon region - Towards a convection-permitting regional climate simulation. Journal of Geophysical Research: Atmospheres, 125, e2019JD032150, doi: 10.1029/2019JD032150. [Web Page]

Moeka Yamaji's first paper in DC will be published:
Yamaji, M., H. G. Takahashi, T. Kubota, R. Oki, A. Hamada, and Y. N. Takayabu, 2020: 4-year climatology of global drop size distribution and its seasonal variability observed by spaceborne Dual-frequency Precipitation Radar. J. Meteor. Soc. Japan, 98, Special Edition on Global Precipitation Measurement (GPM): 5th Anniversary,

Early online release



Assistant Professor Hiroshi TAKAHASHI

Department of Geography,
Tokyo Metropolitan University
1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan
E-mail: hiroshi3~at~tmu.ac.jp