日本地球惑星科学連合(JpGU), PEPS The Most Accessed Paper Award 2017(http://progearthplanetsci.org/awards_j/most-accessed-2017.html),The geospace response to variable inputs from the lower atmosphere: a review of the progress made by Task Group 4 of CAWSES-IIJens Oberheide Kazuo Shiokawa Subramanian Gurubaran William E Ward Hi toshi Fujiwara Michael J Kosch Jonathan J Makela Hisao Takahashi
S. Nozawa   T. D. Kawahara   N. Saito   C. M. Hall   T. T. Tsuda   T. Kawabata   S. Wada   A. Brekke   T. Takahashi   H. Fujiwara   Y. Ogawa   R. Fujii   
Journal of Geophysical Research: Space Physics 119(1) 441-451 2014年1月 [査読有り]
A new solid-state sodium lidar installed at Ramfjordmoen, Tromsø (69.6°N, 19.2°E), started observations of neutral temperature together with sodium density in the mesosphere-lower thermosphere (MLT) region on 1 October 2010. The new lidar provided...
H. Fujiwara   S. Nozawa   Y. Ogawa   R. Kataoka   Y. Miyoshi   H. Jin   H. Shinagawa   
ANNALES GEOPHYSICAE 32(7) 831-839 2014年 [査読有り]
Simultaneous measurements of the polar ionosphere with the European Incoherent Scatter (EISCAT) ultra high frequency (UHF) radar at Tromso and the EISCAT Svalbard radar (ESR) at Longyearbyen were made during 07:00-12:00 UT on 12 March 2012. During...
N. Hoshino   H. Fujiwara   M. Takagi   Y. Kasaba   
Journal of Geophysical Research E: Planets 118(10) 2004-2015 2013年10月 [査読有り]
We investigated generation mechanisms of the local time variation of the wind velocity in the Venusian mesosphere and thermosphere, which has been suggested from recent ground-based CO millimeter/submillimeter and CO 2 10 μm observations, using ou...
Huixin Liu   Hidekatsu Jin   Yasunobu Miyoshi   Hitoshi Fujiwara   Hiroyuki Shinagawa   
Geophysical Research Letters 40(3) 635-640 2013年2月 [査読有り]
The whole atmosphere model GAIA is employed to shed light on atmospheric response to the 2009 major stratosphere sudden warming (SSW) from the ground to exobase. Distinct features are revealed about SSW impacts on thermospheric temperature and den...