Temperature effect of the muon component and practical questions of how to take it into account

The use of muon detectors in the research of cosmic ray variations is restricted by the large temperature effect of the secondary muon component. In order to correct for that effect, atmospheric sounding data are necessary near the detector location. Such data are often absent and it is impossible to restore them in retrospective, or else the soundings are not carried out regularly. We propose another method of the temperature effect calculation, making use of global atmospheric models. Such models are based on general meteorological data, and allow us to determine the atmospheric temperature in any point and at any moment. Using the attitudinal atmospheric temperature profile for standard isobaric levels from one of the models, we have corrected the hourly data for 17 directions of the Nagoya telescope, for 3 directions of the Yakutsk telescope, and for ionization chamber data in Yakutsk and Beijing over the whole period of observations. Comparing the results of the modeling data with those obtained by direct sounding of the attitudinal distribution of temperature, we can assert that the proposed approach can be successfully applied to the temperature effect correction of muon detector data. (authors)