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Fingerprint Dive into the research topics where Toshihiko Hirooka is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

  • 5 Similar Profiles
stratosphere Earth & Environmental Sciences
planetary wave Earth & Environmental Sciences
Rossby wave Earth & Environmental Sciences
winter Earth & Environmental Sciences
Northern Hemisphere Earth & Environmental Sciences
planetary waves Physics & Astronomy
troposphere Earth & Environmental Sciences
warming Earth & Environmental Sciences

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Research Output 1983 2019

  • 600 Citations
  • 14 h-Index
  • 37 Article

Diagnostics of a WN2-Type Major Sudden Stratospheric Warming Event in February 2018 Using a New Three-Dimensional Wave Activity Flux

Harada, Y., Sato, K., Kinoshita, T., Yasui, R., Hirooka, T. & Naoe, H., Jun 27 2019, In : Journal of Geophysical Research: Atmospheres. 124, 12, p. 6120-6142 23 p.

Research output: Contribution to journalArticle

stratospheric warming
Upper atmosphere
stratosphere
Fluxes
Eastern Hemisphere

On the dynamics of the spring seasonal transition in the two hemispheric high-latitude stratosphere

Wang, T., Zhang, Q., Hannachi, A., Lin, Y. & Hirooka, T., Jan 1 2019, In : Tellus, Series A: Dynamic Meteorology and Oceanography. 71, 1, p. 1-18 18 p.

Research output: Contribution to journalArticle

Open Access
planetary wave
stratosphere
Southern Hemisphere
Northern Hemisphere
wave breaking
2 Citations (Scopus)

Primary factors behind the Heavy Rain Event of July 2018 and the subsequent heat wave in Japan

Shimpo, A., Takemura, K., Wakamatsu, S., Togawa, H., Mochizuki, Y., Takekawa, M., Tanaka, S., Yamashita, K., Maeda, S., Kurora, R., Murai, H., Kitabatake, N., Tsuguti, H., Mukougawa, H., Iwasaki, T., Kawamura, R., Kimoto, M., Takayabu, I., Takayabu, Y. N., Tanimoto, Y. & 5 others, Hirooka, T., Masumoto, Y., Watanabe, M., Tsuboki, K. & Nakamura, H., Jan 1 2019, In : Scientific Online Letters on the Atmosphere. 15, A, p. 13-18 6 p.

Research output: Contribution to journalArticle

Open Access
extreme event
airflow
global warming
Northern Hemisphere
anomaly

Troposphere-stratosphere dynamical coupling in regard to the north atlantic eddy-driven jet variability

Iqbal, W., Hannachi, A., Hirooka, T., Chafik, L. & Harada, Y., Jan 1 2019, In : Journal of the Meteorological Society of Japan. 97, 3, p. 657-671 15 p.

Research output: Contribution to journalArticle

Open Access
stratosphere
troposphere
eddy
jet stream
polar vortex

Analysis of the Ozone Reduction Event Over the Southern Tip of South America in November 2009

Akiyoshi, H., Kadowaki, M., Nakamura, H., Sugita, T., Hirooka, T., Harada, Y. & Mizuno, A., Nov 27 2018, In : Journal of Geophysical Research: Atmospheres. 123, 22, p. 12,523-12,542

Research output: Contribution to journalArticle

Ozone
ozone
total ozone
geopotential height
geopotential