Evolution of solar wind parameters at the Earth. Shown are number density, flow velocity, magnetic field, and three components of magnetic field in GSE coordinates. The simulated results at the Earth are shown by blue dot lines. The Wind observations are shown by black solid lines. The black vertical solid lines and dashed lines indicate the arrival time at 1 AU of the CME front and the magnetic cloud from observations, respectively. The red vertical solid lines indicate the arrival time at 1 AU of the CME front from model results.