Research output per year
Research output per year
Research output
- 41 Article
- 41 results
Search results
-
2022
Dynamical evolution of a minor sudden stratospheric warming in the Southern Hemisphere in 2019
Liu, G., Hirooka, T., Eguchi, N. & Krüger, K., Mar 16 2022, In: Atmospheric Chemistry and Physics. 22, 5, p. 3493-3505 13 p.Research output: Contribution to journal › Article › peer-review
Open Access -
2021
Opposite Contributions of Stationary and Traveling Planetary Waves in the Northern Hemisphere Winter Middle Atmosphere
Iwao, K. & Hirooka, T., May 16 2021, In: Journal of Geophysical Research: Atmospheres. 126, 9, e2020JD034195.Research output: Contribution to journal › Article › peer-review
Open Access -
2020
Representation of the equatorial stratopause semiannual oscillation in global atmospheric reanalyses
Kawatani, Y., Hirooka, T., Hamilton, K., K. Smith, A. & Fujiwara, M., Jul 31 2020, In: Atmospheric Chemistry and Physics. 20, 14, p. 9115-9133 19 p.Research output: Contribution to journal › Article › peer-review
Open Access12 Citations (Scopus) -
Tropical water vapour in the lower stratosphere and its relationship to tropical/extratropical dynamical processes in ERA5
Wang, T., Zhang, Q., Hannachi, A., Hirooka, T. & Hegglin, M. I., Jul 1 2020, In: Quarterly Journal of the Royal Meteorological Society. 146, 730, p. 2432-2449 18 p.Research output: Contribution to journal › Article › peer-review
Open Access5 Citations (Scopus) -
2019
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 journal › Article › peer-review
3 Citations (Scopus) -
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 journal › Article › peer-review
Open Access1 Citation (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, 2019, In: Scientific Online Letters on the Atmosphere. 15, A, p. 13-18 6 p.Research output: Contribution to journal › Article › peer-review
Open Access51 Citations (Scopus) -
Troposphere-stratosphere dynamical coupling in regard to the north atlantic eddy-driven jet variability
Iqbal, W., Hannachi, A., Hirooka, T., Chafik, L. & Harada, Y., 2019, In: Journal of the Meteorological Society of Japan. 97, 3, p. 657-671 15 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Citation (Scopus) -
2018
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. 12,523-12,542Research output: Contribution to journal › Article › peer-review
Open Access1 Citation (Scopus) -
2017
Extraordinary Features of the Planetary Wave Propagation During the Boreal Winter 2013/2014 and the Zonal Wave Number Two Predominance
Harada, Y. & Hirooka, T., Nov 16 2017, In: Journal of Geophysical Research: Atmospheres. 122, 21, p. 11,374-11,387Research output: Contribution to journal › Article › peer-review
8 Citations (Scopus) -
Stratospheric tropical warming event and its impact on the polar and tropical troposphere
Kodera, K., Eguchi, N., Mukougawa, H., Nasuno, T. & Hirooka, T., Jan 12 2017, In: Atmospheric Chemistry and Physics. 17, 1, p. 615-625 11 p.Research output: Contribution to journal › Article › peer-review
3 Citations (Scopus) -
2016
Predictability changes of stratospheric circulations in northern hemisphere winter
Ichimaru, T., Noguchi, S., Hirooka, T. & Mukougawa, H., 2016, In: Journal of the Meteorological Society of Japan. 94, 1, p. 7-24 18 p.Research output: Contribution to journal › Article › peer-review
7 Citations (Scopus) -
2015
Month-to-month predictability variations of the winter-time stratospheric polar vortex in an operational one-month ensemble prediction system
Noguchi, S., Mukougawa, H., Hirooka, T., Taguchi, M. & Yoden, S., 2015, In: Journal of the Meteorological Society of Japan. 92, 6, p. 543-558 16 p.Research output: Contribution to journal › Article › peer-review
5 Citations (Scopus) -
2014
Circulation changes in the stratosphere and mesosphere during the stratospheric sudden warming event in January 2009
Iida, C., Hirooka, T. & Eguchi, N., Jun 27 2014, In: Journal of Geophysical Research. 119, 12, p. 7104-7115 12 p.Research output: Contribution to journal › Article › peer-review
19 Citations (Scopus) -
2012
Ionospheric current system during sudden stratospheric warming events
Yamazaki, Y., Yumoto, K., McNamara, D., Hirooka, T., Uozumi, T., Kitamura, K., Abe, S. & Ikeda, A., 2012, In: Journal of Geophysical Research: Space Physics. 117, 3, A03334.Research output: Contribution to journal › Article › peer-review
39 Citations (Scopus) -
2010
A major stratospheric sudden warming event in January 2009
Harada, Y., Goto, A., Hasegawa, H., Fujikawa, N., Naoe, H. & Hirooka, T., Jun 2010, In: Journal of the Atmospheric Sciences. 67, 6, p. 2052-2069 18 p.Research output: Contribution to journal › Article › peer-review
106 Citations (Scopus) -
2009
Influence of stratospheric circulation on the predictability of the tropospheric Northern Annular Mode
Mukougawa, H., Hirooka, T. & Kuroda, Y., Apr 28 2009, In: Geophysical Research Letters. 36, 8, L08814.Research output: Contribution to journal › Article › peer-review
29 Citations (Scopus) -
2008
Characteristics of atmospheric gravity wave activity in the polar regions revealed by GPS radio occultation data with CHAMP
Hei, H., Tsuda, T. & Hirooka, T., Feb 27 2008, In: Journal of Geophysical Research Atmospheres. 113, 4, D04107.Research output: Contribution to journal › Article › peer-review
50 Citations (Scopus) -
2007
Predictability of stratospheric sudden warmings as inferred from ensemble forecast data: Intercomparison of 2001/02 and 2003/04 winters
Hirooka, T., Ichimaru, T. & Mukougawa, H., Dec 1 2007, In: Journal of the Meteorological Society of Japan. 85, 6, p. 919-925 7 p.Research output: Contribution to journal › Article › peer-review
21 Citations (Scopus) -
Predictability of the downward migration of the Northern Annular Mode: A case study for January 2003
Mukougawa, H. & Hirooka, T., Dec 1 2007, In: Journal of the Meteorological Society of Japan. 85, 6, p. 861-870 10 p.Research output: Contribution to journal › Article › peer-review
4 Citations (Scopus) -
2006
Dynamical quantifications of ozone minihole formation in both hemispheres
Iwao, K. & Hirooka, T., Jan 27 2006, In: Journal of Geophysical Research Atmospheres. 111, 2, D02104.Research output: Contribution to journal › Article › peer-review
17 Citations (Scopus) -
2005
High sensitivity to the initial condition for the prediction of stratospheric sudden warming
Mukougawa, H., Sakai, H. & Hirooka, T., Sep 16 2005, In: Geophysical Research Letters. 32, 17, p. 1-4 4 p., L17806.Research output: Contribution to journal › Article › peer-review
47 Citations (Scopus) -
2004
Predictability of stratospheric sudden warming: A case study for 1998/99 winter
Mukougawa, H. & Hirooka, T., Jul 1 2004, In: Monthly Weather Review. 132, 7, p. 1764-1776 13 p.Research output: Contribution to journal › Article › peer-review
49 Citations (Scopus) -
2003
Quasi-biennial variation of the 5-day wave in the stratosphere
Miyoshi, Y. & Hirooka, T., Oct 16 2003, In: Journal of Geophysical Research D: Atmospheres. 108, 19, p. ACL 15-1 - 15-3Research output: Contribution to journal › Article › peer-review
12 Citations (Scopus) -
2002
Interannual variations of the general circulation and polar stratospheric ozone losses in a general circulation model
Watanabe, S., Hirooka, T. & Miyahara, S., Sep 2002, In: Journal of the Meteorological Society of Japan. 80, 4 B, p. 877-895 19 p.Research output: Contribution to journal › Article › peer-review
Open Access3 Citations (Scopus) -
2000
Normal mode rossby waves as revealed by UARS/ISAMS observations
Hirooka, T., May 1 2000, In: Journal of the Atmospheric Sciences. 57, 9, p. 1277-1285 9 p.Research output: Contribution to journal › Article › peer-review
30 Citations (Scopus) -
1999
A numerical experiment of excitation of the 5-day wave by a GCM
Miyoshi, Y. & Hirooka, T., Jun 1 1999, In: Journal of the Atmospheric Sciences. 56, 11, p. 1698-1707 10 p.Research output: Contribution to journal › Article › peer-review
39 Citations (Scopus) -
Radiative and dynamical impacts of Arctic and Antarctic ozone holes: General circulation model experiments
Hirooka, T., Yoshikawa, M., Miyahara, S. & Kayahara, T., 1999, In: Advances in Space Research. 24, 12, p. 1637-1640 4 p.Research output: Contribution to journal › Article › peer-review
1 Citation (Scopus) -
1995
Long range transport of sulfur compounds over the western North Pacific: Deposition samples obtained on Islands
Dokiya, Y., Miyakoshi, N., Hirooka, T., Yamashita, J., Ishikawa, S., Ohya, M. & Sugaya, J., 1995, In: Journal of the Meteorological Society of Japan. 73, 5, p. 873-881 9 p.Research output: Contribution to journal › Article › peer-review
15 Citations (Scopus) -
Periods of planetary waves in geomagnetic variations
Kohsiek, A., Glassmeier, K. H. & Hirooka, T., Feb 28 1995, In: Annales Geophysicae. 13, 2, p. 168-176 9 p.Research output: Contribution to journal › Article › peer-review
31 Citations (Scopus) -
1994
Long-term variations of stratospheric circulations: a comparison of mean fields in the 1980s with CIRA-1986 models
Hirooka, T., Yamashita, J. & Kawahira, K., Jul 1994, In: Journal of Atmospheric and Terrestrial Physics. 56, 9, p. 1041-1049 9 p.Research output: Contribution to journal › Article › peer-review
-
1992
Stratospheric Circulation of the Northern Hemisphere Winter during 1989-90
Hirooka, T., Hayashi, K. & Yamada, S., 1992, In: Journal of geomagnetism and geoelectricity. 44, 11, p. 1097-1106 10 p.Research output: Contribution to journal › Article › peer-review
5 Citations (Scopus) -
Variations of mean zonal winds relating to the ozone hole
Kawahira, K. & Hirooka, T., 1992, In: Journal of Geophysical Research. 97, D9, p. 10,157-10,163Research output: Contribution to journal › Article › peer-review
3 Citations (Scopus) -
1989
Further evidence of normal mode Rossby waves
Hirooka, T. & Hirota, I., Jan 1 1989, In: Pure & Applied Geophysics. 138, 2-3, p. 277-289 13 p.Research output: Contribution to journal › Article › peer-review
16 Citations (Scopus) -
Further evidence of normal mode Rossby waves
Hirooka, T. & Hirota, I., Jun 1 1989, In: Pure and Applied Geophysics PAGEOPH. 130, 2-3, p. 277-289 13 p.Research output: Contribution to journal › Article › peer-review
6 Citations (Scopus) -
Interannual temperature changes in the Antarctic lower stratosphere‐A relation to the ozone hole
Kawahira, K. & Hirooka, T., Jan 1989, In: Geophysical Research Letters. 16, 1, p. 41-44 4 p.Research output: Contribution to journal › Article › peer-review
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1988
An intercomparison of medium-scale waves in the Northern and Southern Hemispheres
Hirooka, T., Kuki, T. & Hirota, I., 1988, In: Journal of the Meteorological Society of Japan. 66, 6, p. 857-868 12 p.Research output: Contribution to journal › Article › peer-review
4 Citations (Scopus) -
1986
Influence of normal mode Rossby waves on the mean field: interference with quasi-stationary waves.
Hirooka, T., 1986, In: Journal of the Atmospheric Sciences. 43, 19, p. 2088-2097 10 p.Research output: Contribution to journal › Article › peer-review
14 Citations (Scopus) -
1984
Normal mode Rossby waves observed in the upper stratosphere.
Hirota, I. & Hirooka, T., 1984, In: Unknown Journal. p. 199-213 15 p.Research output: Contribution to journal › Article › peer-review
2 Citations (Scopus) -
Normal mode Rossby waves observed in the upper stratosphere. Part I: first symmetric modes of zonal wavenumbers 1 and 2.
Hirota, I. & Hirooka, T., 1984, In: Journal of the Atmospheric Sciences. 41, 8, p. 1253-1267 15 p.Research output: Contribution to journal › Article › peer-review
84 Citations (Scopus) -
1983
Upper stratospheric circulations in the two hemispheres observed by satellites
Hirota, I., Hirooka, T. & Shiotani, M., Jul 1983, In: Quarterly Journal of the Royal Meteorological Society. 109, 461, p. 443-454 12 p.Research output: Contribution to journal › Article › peer-review
54 Citations (Scopus)