The COSPAR Colloquium on Solar-Terrestrial Magnetic Activity and Space Environment (STMASE) was held in the National Astronomy Observatories of Chinese Academy of Sciences (NAOC) in Beijing, China in September 10-12, 2001. The meeting was focused on five areas of the solar-terrestrial magnetic activity and space environment studies, including study on solar surface magnetism; solar magnetic activity, dynamical response of the heliosphere; space weather prediction; and space environment exploration and monitoring. A hot topic of space research, CMEs, which are widely believed to be the most important phenomenon of the space environment, is discussed in many papers. Other papers show results of observational and theoretical studies toward better understanding of the complicated image of the magnetic coupling between the Sun and the Earth, although little is still known little its physical background. Space weather prediction, which is very important for a modern society expanding into out-space, is another hot topic of space research. However, a long way is still to go to predict exactly when and where a disaster will happen in the space. In that sense, there is much to do for space environment exploration and monitoring. The manuscripts submitted to this Monograph are divided into the following parts: (1) solar surface magnetism, (2) solar magnetic activity, (3) dynamical response of the heliosphere, (4) space environment exploration and monitoring; and (5) space weather prediction. Papers presented in this meeting but not submitted to this Monograph are listed by title as unpublished papers at the end of this book.

Preface (G. X. Ai).Section I. Solar Surface Magnetism1 Magnetic Reconnection in the Solar Lower Atmosphere(C. Fang, P.F.Chen and M.D.Ding).2 Small-Scale Magnetic Structure in the Photosphere (V. Martinez Pillet)3 Sunspot Dynamics and Coronal Heating (N. Hurlburt)4 Solar Coronal Activity and Evolution of the Magnetic Field(E. E. Benevolenskaya, A. G. Kosovichev and P. H. Scherrer)5 The Sun-as-Star Magnetic Field: Results of Stokesmeter Measurements in Different Spectral Lines (M.L.Demidov, V.V.Zhigalov, V.S.Peshcherov, and V.M.Grigoryev)6 Useful Aspects of Chromospheric Magnetic Field Data (T. Sakurai, Debi Prasad Choudhary and P. Venkatakrishnan)7 Configurations of Magnetic Fields in Solar Active Regions (H. Q. Zhang).8 Reversed Polarity Structures and Powerful X5.7/3b Flare on July 14, 2000, (W. Li, Y. Y. Deng, Y. H. Yan, X. B. Bao).9 Properties of Twist of Solar Bipolar Magnetic Fields (L. R. Tian and H. Q. Zhang).10 Helicity Evolution of a Spot (Y. Liu and H. Zhang).11 The Distribution of Magnetic Shear of Solar Active Regions From 1995 to 2000 (J. Dun, H. Zhang, B. Zhang and R. Li).12 The Evolution Rate of Small Solar Active Regions and Its Temporal and Spatial Variations (A.A. Golovko).13 Correcting the Projection Effects of Solar Vector Magnetogram(Hui Li).14 The Application of Magnetic Line Ratio Method to Magnetographic Observations of Large-Scale Solar Magnetic Fields (R.M. Veretsky and M.L.Demidov)15 The Primary Design of A 1-Meter Infrared Solar Telescope(W.D. Cao, Z.Liu, and B.X. Ye)16 Developing Huairou web Site (G. H. Lin).Session II. Solar Magnetic Activity17 Lower Energy Cutoff of Nonthermal Electrons Derived From Batse/Cgro Hard X-Ray (W. Q. Gan, Y. P. Li and J. Chang)18 Non-LTE Inversion of an Ha Flaring Loop (M. D. Ding, Y. Liu, P. F. Chen, and C. Fang)19 Magnetic Flux Cancellation Associated with Coronal Mass Ejections (Jingxiu Wang, Jun Zhang, and Yuanyong Deng)20 Dip-Like Magnetic Field Structure Seen in Solar Prominences (H. S. Yun, et al.). 21 Common Characteristics of CMEs and Blobs: a New View of Their Possible Origin (V.G.Eselevich, M. V. Eselevich).22 Statistical Studies of Filament Disappearances and CMEs(G. Yang and H. Wang).23 Catastrophic Behavior of Coronal Magnetic Flux Ropes in Partially Open Magnetic Fields (Y. Q. Hu).24 Coronal Response to the Emergence of New Magnetic Flux (M. Zhang and B. C. Low).25 Constraints on Models of the Initiation of Coronal Mass Ejections (N. V. Nitta).26 What Can We Learn From Constructing CME Models (Jun Lin and Jingxiu Wang)27 A Dual-Loop Initiation Model for Coronal Mass Ejections (A. M. Uralov , S.V.Lesovoi and V.G.Zandanov).28 Coronal Mass Ejections From the Corona to the Interplanetary Medium (Monique Pick).29 Relation Between Coronal Mass Ejections and their Interplantary Counterparts (N. Gopalswamy).30 A Manifestation of Magnetic Fluxes in Microwave Emission of the Solar Corona (B.V. Agalakov, et al.).31 Statistical Properties of Radio-Rich Coronal Mass Ejections (N. Gopalswamy,et al.).32 The Broadening Cause of the CaXIX Resonace Line in Solar Flares (Y.P. Li and W.Q. Gan).33 Dynamical Features of the Dipole Magnetic Fields Generated Two X-Ray Coronal Mass Ejections and Type IVµ Burst(S. C. Ji)34 S-Shaped Magnetic Field Generated an Extra Large Type IVµ Burst and Coronal Mass Ejection (S. C. Ji).35 Centimetric Type N and Type M Bursts (Min Wang, Qijun Fu, Ruixiang Xie).36 Role of Hydrogen and Deuterium in Energy Release From the Solar Flare: Comment on Neupert Effect (Run-bao Lu).37 Analysis of the January 6-11, 1997, Coronal Mass Ejection (Y.Q. Wu, Y.H. Tang, Y.Dai, G.P.Wu).Session III. Dynamical Response of the Heliosphere38 Analysis of Lasco Observations of Streamer Blowout Events(A. Vourlidas).39 The Geoeffectiveness of Full-Halo Coronal Mass Ejections (Xuepu Zhao).40 The Heliospheric Magnetic Field Proded with Fast Charged Particles (J. Giacalone).41 Evolution of the Bastille day High-Speed Stream (Y. C. Whang).