Report on the Activity of Commission G
1. Current status of facilities for ionospheric observation
Ionosonde stations near the magnetic equator
ionosonde was installed at Chiang Mai, northern
2. Observation Campaigns
CPEA First International Observation Campaign in March-May 2004
"Coupling Processes in the Equatorial Atmosphere (CPEA)" is a research program funded by the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) as a Grant-in-Aid for Scientific Research on Priority Areas in the period from September 2001 to March 2007. CPEA studies dynamical coupling processes in the equatorial atmosphere by conducting various observations.
The first international observation campaign of CPEA was conducted from March to May 2004. In the campaign we operated the following facilities:
boundary layer radar, X-band meteorological radar, meteor radar, and FM-CW ionosonde (by NICT) at the EAR site, X-band Doppler radar
near Bukittinggi, two MF radars at
l Lidars: Rayleigh/Mie lidar at the EAR site.
experiment: GPS radiosondes launched from four
instruments: RASS, airglow imager and airglow temperature photometer at the EAR
site, GPS receivers at the EAR site and
l Meteorological instruments: Radiometer, rain gauge, disdrometer, etc., at the EAR site.
The period of
the first international observation campaign was divided into two parts. During
March 10 to
first half of the campaign, we could observe echoes from 3-m scale ionospheric irregularities associated with plasma bubbles for about half the nights. On
The CPEA campaign is endorsed by CAWSES (Climate and Weather of the Sun-Earth System) under SCOSTEP (The Scientific Committee On Solar-TErrestrial Physics).
For more information visit at http://www.kurasc.kyoto-u.ac.jp/cpea/CPEA-Eng/CPEA-Eng-Frame.htm
FERIX (F- and E-Region Ionosphere Coupling Study)
observational campaign is going on to clarify the coupling process between the
F-region and E-region ionosphere at midlatitudes from
June to August 2004 in northern part of
3. Coming Workshops
(1) XIth IAGA Workshop on Geomagnetic Observatory
Instruments, Data Acquisition and Processing (
The workshop is organized by International Association of Geomagnetism and Aeronomy (IAGA), Japanese National Committee for Geomagnetism and Aeronomy, the Science Council of Japan, Society of Geomagnetism and Earth, Planetary and Space Sciences, and Kakioka Magnetic Observatory.
(2) International Workshop on Seismo Electromagnetics (
is organized by
(Prepared by T. Maruyama and M. Yamamoto)