We describe a method for monitoring geophysical (atmospheric and magnetospheric) parameters on the basis of cosmic rays (CR). The method is based on the principle of multichannel synchronous recording of all secondary components of CR in the energy range from a few to 200 GeV. The geophysical parameters are found from solving a system of equations for CR variations. The results of CR monitoring using a multichannel observation complex for the period from January, 2004 are considered
