# Correlation of AOT with Relative Frequency of Air Showers with energy 10^{15} - 10^{16} eV by Yakutsk Data

## TL;DR

This study analyzes long-term atmospheric transparency and optical thickness data from Yakutsk to find a correlation between aerosol levels and the frequency of low-energy air showers, highlighting the impact of aerosol variability.

## Contribution

It presents the first correlation analysis between aerosol optical thickness and air shower frequency at Yakutsk, emphasizing the importance of aerosol variability in air shower measurements.

## Key findings

- A significant correlation between AOT and air shower intensity was identified.
- Variability in aerosol composition affects the accuracy of air shower characteristic determination.
- Long-term atmospheric data can inform cosmic ray and atmospheric studies.

## Abstract

Long-term series of measurement of spectral transparency of the atmosphere (\lambda = 430 nm) and atmospheric optical thickness (AOT) measured by multimode photometer CE 318 in the region of Yakutsk array are analyzed. Correlation of AOT with intensity of air showers with small energies 10^{15} - 10^{16} eV is found. The variability of aerosol composition of the atmosphere during the registration period of the Cherenkov light should be taken into account since it may affect the quality of determining characteristics of air showers.