Procedure to emend neutron monitor data that are affected by snow accumulations on and around the detector housing

In this work, a method of neutron monitor data correction for the snow effect caused by the snow accumulation on and around the detector housing is described. This is particularly important for some high‐latitude and mountain cosmic ray stations. The results of manual correction are compared with the results of automatic correction on the basis of the algorithm developed here. The proposed method has been applied to a number of cosmic ray stations where the snow accumulation is large and variable during the winter, for example, Magadan, Emilio Segre Observatory in Israel, Moscow Cosmic Ray Laboratory, Jungfraujoch, and Nain. Key Points A method to correct for the snow effect in neutron monitor data is described The method is based on the comparison of tested and reference stations data The method allows to estimate the effective snow cover thickness