Sierra Negra Solar Neutron Telescope's Atmospheric Correction

The atmospheric temperature and pressure effects on the measurements of the Solar Neutron Telescope (SNT) at Sierra Negra, Mexico, were studied. The SNT and a recently installed weather station are part of the Sierra Negra Cosmic Ray Observatory (SN-CRO), located at 4580 m a.s.l. We analyzed the data recorded by the SNT and the weather station during September and October, 2022 and applied a novel principal component analysis (PCA) method, developed in 2019 by Savic et al, to the SNT data. The PCA of the modeled temperature profile above SN-CRO allowed for a better correction than the traditional linear regression, that was also performed with the new weather station data.