Hashida Gen

J-GLOBAL         Last updated: Nov 16, 2019 at 13:27
 
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Name
Hashida Gen
Affiliation
Research Organization of Information and Systems
Section
National Institute of Polar Research

Research Areas

 
 

Committee Memberships

 
Aug 2017
 - 
Today
DROMLAN (Dronning Moud Land Air Network)  Co-chair
 

Awards & Honors

 
Jan 2018
Vertical Profiles and Temporal Variations of Greenhouse Gases in the Stratosphere over Syowa Station, Antarctica, 2017 SOLA Award
 

Published Papers

 
Gravitational separation of the stratospheric air over Syowa, Antarctica and its connection with meteorological fields
Shigeyuki Ishidoya Satoshi Sugawara Yoichi Inai Shinji Morimoto Hideyuki Honda Chusaku Ikeda Gen Hashida Toshinobu Machida Yoshihiro Tomikawa Sakae Toyoda Daisuke Goto Shuji Aoki Takakiyo Nakazawa
Atmos Sci Lett. 2018;19:e857. https://doi.org/10.1002/asl.857      Nov 2018   [Refereed]
Daisuke Goto, Shinji Morimoto, Shuji Aoki, Satoshi Sugawara, Shigeyuki Ishidoya, Yoichi Inai, Sakae Toyoda, Hideyuki Honda, Gen Hashida, Takashi Yamanouchi, and Takakiyo Nakazawa
   Nov 2017   [Refereed]
Phytoplankton community responses to iron and CO2 enrichment in different biogeochemical regions of the Southern Ocean
Hisashi Endo, Hiroshi Hattori, Tsubasa Mishima, Gen Hashida, Hiroshi Sasaki, Jun Nishioka, Koji Suzuki
Polar Biology   DOI 10.1007/s00300-017-2130-3    Apr 2017   [Refereed]
Fumihiro Akiha,Gen Hashida, Ryosuke Makabe, Hiroshi Hattori, Hiroshi Sasaki
Polar Science      Feb 2017   [Refereed]
D. Nomura, H. Yoshikawa-Inoue, S. Kobayashi, S. Nakaoka, K. Nakata, and G. Hashida
Biogeosciences   9th International Carbon Dio    Sep 2014   [Refereed]
Takao Shintaro , Hirawake Toru , Hashida Gen , Sasaki Hiroshi , Hattori Hiroshi , Suzuki Koji
Polar Biology   DOI: 10.1007/s00300-014-1542-6   Jul 2014   [Refereed]
Daiki Nomura, Mats A. Granskog, Philipp Assmy, Daisuke Simizu and Gen Hashida
J. Geophys. Res. Oceans   DOI: 10.1002/2013JC009048    Dec 2013   [Refereed]
Takashi Midorikawa, Hisayuki Y. Inoue, Masao Ishii, Daisuke Sasano, Naohiro Kosugi, Gen Hashida, Shin-ichiro Nakaoka, Toru Suzuki
Deep Sea Research Part I: Oceanographic Research Papers   61 131-139   Mar 2012   [Refereed]
K. Hara, K. Osada, M. Yabuki, G. Hashida, T. Yamanouchi, M. Hayashi, M. Shiobara, C. Nishita and M. Wada
JOURNAL OF GEOPHYSICAL RESEARCH   VOL. 115, D14205, doi:10.-1029/2009JD012582   2010   [Refereed]
Nakaoka, S., T. Nakazawa, H. Yoshikawa-Inoue, S. Aoki, G. Hashida, M. Ishii, T. Yamanouchi, T. Odate, and M. Fukuchi
Geophys. Res. Lett.   doi:10.1029/2009GL038467   2009   [Refereed]
Masafumi Sasaki, Satoshi Imura, Sakae Kudoh, Takashi Yamanouchi, Shinji Morimoto, and Gen Hashida
JOURNAL OF GEOPHYSICAL RESEARCH   Vol. 114, D18114, doi:10.-1029/2009JD011849   2009   [Refereed]
Longitudinally-dependent ozone increase in the Antarctic polar vortex revealed by balloon and satellite observation
Sato, K., Y. Tomikawa, G. Hashida, T. Yamanouchi, H. Nakajima, and T. Sugita
J. Atmos. Sci.   doi: 10.1175/2008JAS2904.1   2008   [Refereed]
Morimoto, S., T. Nakazawa, S. Aoki, G. Hashida and T. Yamanouchi
Tellus   55B, 170-177   2007   [Refereed]
Glaciological Data Collected by the 44th Japanese Antarctic Research Expedition during 2003-2004.
Kameda, T., Fujita, K., Sugita, O., and Hashida, G.
JARE Data report Glaciology   33   2007   [Refereed]
Kawamura, K., J. P. Severinghaus, S. Ishidoya, S. Sugawara, G. Hashida, H. Motoyama, Y. Fujii, S. Aoki, T. Nakazawa
Earth and Planetary Science Letters   244, 672-682   2006   [Refereed]
Nakaoka, Shin-Ichiro, Shuji Aoki, Takakiyo Nakazawa, Gen Hashida, Shinji Morimoto, Takashi Yamanouchi and Hisayuki Yoshikawa-Inou
Tellus   58B, 148-161   2006   [Refereed]
Ishidoya, S., S. Sugawara, G. Hashida, S. Morimoto, S. Aoki, T. Nakazawa and T. Yamanouchi
Geophysical Research Letters   Vol. 33, doi:10.-1029/2006GL025886   2006   [Refereed]
Hara, Keiichiro, Kazuo Osada, Mizuka Kido, Katsuji Matsunaga, Yasunobu Iwasaka, Gen Hashida and Takashi Yamanouchi
Tellus   57B, no.3, 230-246   2005   [Refereed]
Hara, K., K. Osada, M. Kido, M. Hayashi, K. Matsunaga, Y. Iwasaka, T. Yamanouchi, G. Hashida and T. Fukatsu
Journal of Geophysical Research   Doi: 10.1029/2004JD004713   2004   [Refereed]
Toyoda, S., N. Yoshida, T. Urabe, Y. Nakayama, T. Suzuki, K. Tsuji, K.
Journal of Geophysical Research   109, D08308 , doi:10.-1029/2003JD004316   2004   [Refereed]
Aoki, S., T. Nakazawa, T. Machida, S. Sugawara, S. Morimoto, G. Hashida, T. Yamanouchi, K. Kawamura and H. Honda
Tellus,   55B, 178-186   2003   [Refereed]
Reconstruction of past atmospheric CH4 concentration from the firn air data at Dome Fuji.
Sugawara,S., K. Kawamura, S. Aoki, T. Nakazawa and G. Hashida
Mem. Natl Inst. Polar Res   Spec. Issue, 57, 31,-153-160.   2003   [Refereed]
Sugawara, S., K. Kawamura, S. Aoki, T. Nakazawa and G. Hashida
Tellus   55B, 159-169   2003   [Refereed]
Annual-layer determinations and 167 year records of past climate of H72 ice core in east Dronning Maud Land, Antarctica.
Nishio, F., Furukawa, T., Hashida, G., Igarashi, M., Kameda, T., Kohno, M., Motoyama, H., Naoki, K., Satow, K., Suzuki, K., Takata, M., Toyama, Y., Yamada, T. and Watanabe, O
Annals of Glaciology   35, 471-479   2002   [Refereed]
Nakazawa, T., S. Aoki, K. Kawamura, T. Saeki, S. Sugawara, H. Honda, G. Hashida, S. Morimoto, N. Yoshida, S. Toyoda, Y. makide and T. Shirai
Adv. Space Res   30, 1349-1357   2002   [Refereed]
Sulfate depletion in snow over sea ice near Syowa station, Antarctica, in relation to the origin of sulfate depleted sea salt aerosol particles in winter.
Osada, K., K. Hara, M. Kido, H. Kai, T. Yamanouchi, G. Hashida, K. Matsunaga and Y. Iwasaka
Polar Meteorology and Glaciology   15, 21-31   2001   [Refereed]
Honda, H., N. Yajima, T. Yamagami, S. Aoki, G. Hashida, T. Machida and S. Morimoto
Adv. Space Res.   26, 1369-1372   2000   [Refereed]
Improved scientific ballooning applied to the cryo-sampling experiment at Syowa Station.
Yajima, N., Honda, H., Aoki,S., Hashida, G., Morimoto, S., Machida, T. and Okano, S.
Adv. Pol. Upper Atmos. Res.   13, 167-175.   1999
Hashida Gen, Nakazawa Takakiyo, Aoki Shuhji, Murayama Shohei, Yamanouchi Takashi, Tanaka Masayuki, Shimizu Akira, Hayashi Masahiko, Iwai Kunimoto
Antarctic record   41(1) 203-220   Mar 1997
With a newly developed automatic measurement system, the partial pressure of CO_2 in the surface sea water and lower troposphere were continuously monitored on board the icebreaker SHIRASE between Japan and Antarctica from November 1987 to March 1...
A small stratospheric grab-sampler and its ground support system for Antarctic experiments (abstract)
Honda, H., Akiyama, H., Yajima, N., Morimoto, S., Hashida, G., Yamanouchi, T., Aoki, S. and Nakazawa, T.
Proc. NIPR Symp. Polar Meteorol. Glaciol.   11, 264.   1997
Nakajima, T., T. Hayasaka, A. Higurashi, G. Hashida, N. Moharram-Nejad, Y. Najafi and H. Valavi
J. Appl. Meteorol.   35, 1265-1278   1996   [Refereed]
Nakazawa, T., T. Machida, S. Sugawara, S. Murayama, S. Morimoto, G. Hashida, H. Honda and T. Itoh
Journal of Geophysical Research   22, 1229-1232   1995   [Refereed]

Misc

 
ISHIDOYA Shigeyuki, SUGAWARA Satoshi, MORIMOTO Shinji, AOKI Shuji, NAKAZAWA Takakiyo, TOYODA Sakae, HONDA Hideyuki, HASHIDA Gen, MURAYAMA Shohei, YAMANOUCHI Takashi
JAXA research and development report   13 71-86   Mar 2014
Gravitational separation of major atmospheric components in the stratosphere was detected firstly, from our high-precision measurements of O2/N2, Ar/N2 and the isotopic ratios of N2, O2 and Ar for the air samples collected using a balloon-borne cr...
Takahashi Kunio T., Iida Takahiro, Hashida Gen, Odate Tsuneo
Antarctic record   56(3) 447-455   Nov 2012
The powerful ice-breaking capability of the Japanese icebreaker Shirase raises the possibility of marine observations in the fast-ice and/or permanent ice zone; however, it has been difficult to use conventional equipment in such areas due to the ...
Gen Hashida, Hiroshi Sasaki, Yujiro Kitade, Tsuneo Odate
Antarctic record   56(1) 68-83   Mar 2012
A marine science cruise was undertaken during December 2010 and January 2011 on board the Research and Training Vessel Umitaka-Maru, operated by Tokyo University of Marine Science and Technology (TUMSAT), to accomplish projects of the six-year pla...
HIRASAWA Naohiko, HASHIDA Gen, YAMANOUCHI Takashi, HONDA Meiji, NISHII Kazuaki, IIJIMA Yoshihiro, FUJITA Shuji, AOKI Shigeru, IIDA Takahiro
Tenki   58(4) 317-323   Apr 2011
Hara Keiichiro, Osada Kazuo, Hayashi Masahiko, Yabuki Masanori, Hashida Gen, Yamanouchi Takashi
Antarctic record   54(0) 668-696   Dec 2010
Observations of aerosol constituents and acidic gases were carried out at Syowa Station (1997-1998 and 2003-2006; JARE-38〜 39, and JARE-44〜 47) and Dome Fuji Station (1997, JARE-38). Seasonal variations and size distribution of sea-salt particles ...
Hara Keiichiro, Osada Kazuo, Yabuki Masanori, Hashida Gen, Yamanouchi Takashi, Hayashi Masahiko, Shiobara Masataka, Nishita-Hara Chiharu, Wada Makoto
Antarctic record   54(0) 593-622   Dec 2010
During our aerosol measurement program at Syowa Station, Antarctica in 2004-2007, some low visibility (haze) phenomena were observed under conditions with weak wind and without drifting snow and fog in winter-spring. In the "Antarctic haze" phenom...
Hayashi Masahiko, Osada Kazuo, Hara Keiichiro, Yabuki Masanori, Kobayashi Hiroshi, Ihara Satoshi, Wada Makoto, Yamanouchi Takashi, Hashida Gen, Shiobara Masataka
Antarctic record   54(0) 474-486   Dec 2010
Concentrations of condensation nuclei (>0.01 μm in diameter) and of aerosol particles larger than 0.3 μm in diameter were monitored at Syowa Station from February, 1996. Number concentrations of condensation nucleus were high in summer and low in ...
Osada Kazuo, Hara Keiichiro, Yabuki Masanori, Nishita-Hara Chiharu, Kobayashi Hiroshi, Miura Kazuhiko, Ueda Sayako, Hayashi Masahiko, Hashida Gen, Shiobara Masataka, Wada Makoto, Yamanouchi Takashi
Antarctic record   54(0) 449-464   Dec 2010
To investigate spatial and temporal variation of number-size distribution of atmospheric aerosol particles in the Antarctic Ocean, atmospheric observations were conducted on research vessels: Hakuho-maru, Tangaroa, and Umitaka-maru. Concentrations...
Hashida Gen, Nakaoka Shin-ichiro, Ono Hisashi, Nakazawa Takakiyo, Yoshikawa Hisayuki, Aoki Shuji, Morimoto Shinji, Yamanouchi Takashi, Odate Tsuneo, Fukuchi Mitsuo
Antarctic record   54(0) 438-448   Dec 2010
In order to elucidate the secular trends of oceanic CO_2 uptake in the Indian sector of the Southern Ocean, pCO_2, the partial pressure of CO_2 in the ocean surface layer, has been measured since 1987 on board the icebreaker Shirase. Meridional di...
Sugawara Satoshi, Toyoda Sakae, Ishidoya Shigeyuki, Morimoto Shinji, Hashida Gen, Aoki Shuji, Nakazawa Takakiyo, Yamanouchi Takashi, Honda Hideyuki
Antarctic record   54(0) 410-425   Dec 2010
Balloon-borne cryogenic samplers were launched from Japanese Antarctic Station, Syowa, on December 26, 2003 and January 5, 2004. Stratospheric air samples were successfully collected at 11 different altitudes from 10 to 30 km. After air samples we...
Morimoto Shinji, Ishidoya Shigeyuki, Ishijima Kentarou, Yashiro Hisashi, Umezawa Taku, Hashida Gen, Sugawara Satoshi, Aoki Shuji, Nakazawa Takakiyo, Yamanouchi Takashi
Antarctic record   54(0) 374-409   Dec 2010
To elucidate temporal variations of greenhouse gases and their related gases in the Arctic and Antarctic regions and to investigate their sources and sinks, systematic measurements of atmospheric CO_2, CH_4CO, N_2O, O_2 and tropospheric O_3 concen...
Osada Kazuo, Hayashi Masahiko, Shiobara Masataka, Hara Keiichiro, Wada Makoto, Hashida Gen, Morimoto Shinji, Yabuki Masanori, Yamanouchi Takashi
Antarctic record   50(1) 86-102   Mar 2006
An observatory (19m^2 inside area) was built for monitoring clean air constituents, such as aerosol particles and ozone, near the core block of Syowa Station. The observatory is located about 300m windward of the main buildings of Syowa Station to...
SUGAWARA Satoshi, HASHIDA Gen, ISHIDOYA Shigeyuki, NAMIKI Michiyoshi, IIJIMA Issei, MORIMOTO Shinji, AOKI Shuji, HONDA Hideyuki, IZUTSU Naoki, NAKAZAWA Takakiyo, YAMANOUCHI Takashi
JAXA research and development report   4 77-87   Feb 2005
Balloon-borne cryogenic samplers were launched from Japanese Antarctic Station,Syowa, on December 26, 2003 and January 5, 2004 by the 45th Japanese Antarctic Research Expedition team. Stratospheric air samples were successfully collected at 11 dif...
Uto Shotaro, Shimoda Haruhito, Izumiyama Koh, Ushio Shuki, Aoki Shigeru, Hashida Gen, Wakabayashi Hiroyuki, Nishio Fumihiko
Antarctic record   48(3) 165-179   Nov 2004
Sea ice observations have been conducted onboard the Antarctic Research Vessel Shirase" since . The authors summarize these data to investigate spatial and inter-annual variability of sea ice thickness and snow depth of the summer land-fast ice in...
Oceanographic Data in Lutzow-Holm Bay from July 1998 to December 1998 (JARE-39)
S. Aoki and G. Hashida
JARE DATA REPORT (Oceanography)   22, 1-18   2001
Atmospheric CO2 concentartion observed at Syowa Station from 1984 to 1992
S. Aoki, T. Nakazawa, S. Morimoto, G. Hashida, M. Shiobara, and T. Yamanouchi
JARE DATA REPORT   252 (Meteorology 36), 1-55   2000
AOKI Shuji, HASHIDA Gen, MACHIDA Toshinobu, OKANO Syouichi, YAMANOUCHI Takashi, MORIMOTO Shinji, HONDA Hideyuki, NAMIKI Michiyoshi, YAJIMA Nobuyuki, NAKAZAWA Takakiyo
39 87-106   Mar 1999
In order to elucidate the vertical distribution of greenhouse gases and the isotopic compositions in the antarctic stratosphere, an experiment of balloon-borne cryogenic air sampling over Syowa Station were planned in 1992. A feasibility study for...
HONDA Hideyuki, IZUTSU Naoki, MORIMOTO Shinji, AOKI Shuji, HASHIDA Gen, MACHIDA Toshinobu, OKANO Shouichi, YAJIMA Nobuyuki, YAMAGAMI Takamasa, NAMIKI Michiyoshi, Balloon Groop
39 67-86   Mar 1999
On January 3rd a cryogenic air sampling experiment was successfully carried out at Syowa Station, Antarctica. Large amounts of stratospheric air samples were collected over the Antarctic region up to 30km altitude for the first time in history. Th...
HONDA Hideyuki, HASHIDA Gen, MORIMOTO Shinji, AOKI Shuji, YAMANOUCHI Takashi, NAKAZAWA Takakiyo
39 57-66   Mar 1999
Recovering a balloon payload is indispensable for an experiment of the cryogenic air sampling. A recovery operation, however, has never been made at Syowa Station, Antarctica. Therefore, we examined possibility of a payload recovery at the station...
SUGAWARA Satoshi, NAKAZAWA Takakiyo, AOKI Shuji, MACHIDA Toshinobu, MORIMOTO Shinji, MURAYAMA Shohei, HASHIDA Gen, KAWAMURA Kenji, HONDA Hideyuki, ITOH Tomizo
34 103-120   Mar 1997
Stratospheric air samples have been collected over Japan during the period from 1985 to 1995 using a balloon-borne cryogenic sampler, and then analyzed for the CO_2,CH_4 and N_2O concentrations and the carbon isotopic ratio of CH_4. The results sh...
Yamanaka Manabu D., Yoden Shigeo, Hashida Gen, Tsuruta Haruo
Tenki   44(1) 35-41   Jan 1997
Honda Hideyuki, Morimoto Shinji, Akiyama Hiromitsu, Hashida Gen, Aoki Shuhji, Ui Hirotaka, Nakazawa Takakiyo, Yajima Nobuyuki, Yamanouchi Takashi
Antarctic record   40(2) 156-168   Jul 1996
In order to measure the concentrations of various minor constituents and their isotopic ratios in the stratosphere over Antarctica, a simple grab sampling system was newly developed. The sampling system was designed to be launched by a small numbe...
ITOH Tomizo, HONDA Hideyuki, TOMINAGA Takeshi, MAKIDE Yoshihiro, YAMAKI Ryutaro, NAKAZAWA Takakiyo, HASHIDA Hajime, SAKAI Hitoshi, TSUTSUMI Makoto, GAMO Toshitaka
24 49-61   Dec 1989
Stratospheric air samples from 19 to 30km altitude over Japan were collected by means of balloon-borne cryogenic sampling system to measure the vertical profiles of trace gas mixing ratios and stable isotopic ratios of the stratospheric carbon dio...

Conference Activities & Talks

 
Antarctic Educational Activities by the National Institute of Polar Research
Yoichi Motoyoshi and *Gen Hashida
COMNAP HALF‐DAY WORKSHOP ON ANTARCTIC‐RELATED EDUCATION & OUTREACH “Communicating the importance of our Antarctic activity”   31 Jul 2019   
How to Minimise the Risk of Field Activities During Winter‐Over
Hashida Gen
the COMNAP Symposium 2016 Winter- O ver Challenges   19 Aug 2016   
Temporal variation of dissolved carbonates in the summer of Antarctic seasonal sea ice zone
G. Hashida , T. R. Takamura , D. Nomura , H.-I. Yoshikawa
17 Nov 2015   
Ocean Acidification States in the Indian Sector of the Southern Ocean relating to the secular trend and seasonal variation of Oceanic Carbon Dioxide
G. Hashida, T. Nakazawa, S. Aoki, S. Nakaoka, H. Yoshikawa-Inoue, T. Yamanouchi, T. Odate, and M. Fukuchi
International Polar Year Oslo Science Conference, 2010 8-12 June, Oslo, norway   2010   
Acidification due to the uptake of carbon dioxide by the ocean and long-term variation of aceanic carbon dioxide in the Indian sector of the Southern Ocean
G.Hashida, H. Yoshikawa-Inoue, S.Aoki, T.Nakazawa, S. Nakaoka, and T. Yamanouchi.
Xth SCAR International Biology Symposium, July 26-31, 2009, Sapporo, Japan.   2009