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YOKOYAMA, Chie Lecturer Atmosphere and Ocean Research Institute Office: Kashiwa Research Complex-304b E-mail: HP:
Research Field Tropical meteorology, Precipitation, Climate, Satellite observation Current Research I study precipitation across the globe and its relationships with the climate by analyzing various data, such as satellite observation data and climate model data. Precipitation has a variety of characteristics under different conditions: for example, relatively strong precipitation is brought by less organized cumulonimbi in some cases, but it falls with the mesoscale structure in an organized manner in other cases. A diversity of precipitation characteristics is also found around Japan, and it is important to elucidate how different precipitation characteristics, such as heavy rainfall in the latter part of the Baiu season, occur in relation to the large-scale environments. Knowledge on relationships between precipitation and large-scale environments helps us deepen understanding of precipitation in a changing climate. Furthermore, precipitation is closely related to larger phenomena and atmospheric general circulations through its latent heating. From this perspective, I also examine roles of precipitation in meteorological phenomena and climate systems. Representative Publications 1. Yokoyama, C., H. Tsuji, and Y. N. Takayabu, 2020: The effects of an upper-tropospheric trough on the Heavy Rainfall Event in July 2018 over Japan. J. Meteor. Soc. Japan, 98, 235-255. 2. Yokoyama, C., Y. N. Takayabu, O. Arakawa, and T. Ose, 2019: A study on future projections of precipitation characteristics around Japan in early summer combining GPM DPR observation and CMIP5 large-scale environments. J. Climate, 32, 5251-5274. 3. Yokoyama, C., Y. N. Takayabu, and T. Horinouchi, 2017: Precipitation characteristics over East Asia in early summer: effects of the subtropical jet and lower-tropospheric convective instability. J. Climate, 30, 8127-8147.

YOKOYAMA, Chie

Lecturer
Atmosphere and Ocean Research Institute

Office: Kashiwa Research Complex-304b
E-mail:
HP:

Research Field

Tropical meteorology, Precipitation, Climate, Satellite observation

Current Research

I study precipitation across the globe and its relationships with the climate by analyzing various data, such as satellite observation data and climate model data. Precipitation has a variety of characteristics under different conditions: for example, relatively strong precipitation is brought by less organized cumulonimbi in some cases, but it falls with the mesoscale structure in an organized manner in other cases. A diversity of precipitation characteristics is also found around Japan, and it is important to elucidate how different precipitation characteristics, such as heavy rainfall in the latter part of the Baiu season, occur in relation to the large-scale environments. Knowledge on relationships between precipitation and large-scale environments helps us deepen understanding of precipitation in a changing climate. Furthermore, precipitation is closely related to larger phenomena and atmospheric general circulations through its latent heating. From this perspective, I also examine roles of precipitation in meteorological phenomena and climate systems.

Representative Publications

1. Yokoyama, C., H. Tsuji, and Y. N. Takayabu, 2020: The effects of an upper-tropospheric trough on the Heavy Rainfall Event in July 2018 over Japan. J. Meteor. Soc. Japan, 98, 235-255.
2. Yokoyama, C., Y. N. Takayabu, O. Arakawa, and T. Ose, 2019: A study on future projections of precipitation characteristics around Japan in early summer combining GPM DPR observation and CMIP5 large-scale environments. J. Climate, 32, 5251-5274.
3. Yokoyama, C., Y. N. Takayabu, and T. Horinouchi, 2017: Precipitation characteristics over East Asia in early summer: effects of the subtropical jet and lower-tropospheric convective instability. J. Climate, 30, 8127-8147.