Interplanetary Scintillation Observations of the Solar Wind for Space Weather Modeling

Abstract

Since the condition of space environment (the “space weather”) near the Earth is strongly influenced by the solar wind, improvement of our understanding of it is essential for minimizing adverse space weather impacts on space technologies and astronauts. Interplanetary scintillation (IPS) observations are useful to gain insight into the global properties of the solar wind, which are poorly understood by in situ measurements. We have carried out IPS observations at 327 MHz regularly using the four-station system of the Solar-Terrestrial Environment Laboratory (STEL) of the Nagoya University. The deconvolution analysis of our IPS observations has revealed the 3-dimesnional feature, solar origin and dynamical behavior of the solar wind, which are crucial information to develop the space weather prediction model.