Long Term Variability of the Sun and Climate Change

by Il-Hyun Cho, Heon-Young Chang
Published 2008-12-01

Latitudinal Distribution of Sunspots Revisited

by Il-Hyun Cho, Heon-Young Chang
Published 2011-03-01

Ionospheric F2-Layer Semi-Annual Variation in Middle Latitude by Solar Activity

by Yoon-Kyung Park, Young-Sil Kwak, Byung-Ho Ahn, Young-Deuk Park, Il-Hyun Cho
Published 2010-12-01

Space Radiation Measurement on the Polar Route onboard the Korean Commercial Flights

by Junga Hwang, Jaejin Lee, Kyung-Suk Cho, Ho-Sung Choi, Su-ryun Rho, Il-Hyun Cho
Published 2010-03-01

Analysis on Space Environment from the Anomalies of Geosynchronous Satellites

by Jaejin Lee, Junga Hwang, Su-Chan Bong, Ho-Sung Choi, Il-Hyun Cho, Kyung-Suk Cho, Young-Deuk Park
Published 2009-12-01