aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 87 Magnetism and activity of the Sun and stars – 2021 Conference proceedings Cyclic variations in the areas of coronal holes and sunspots in 2010–2021 Andreeva Olga Abramenko Valentina Malashchuk Valentina Crimean Astrophysical Observatory, Nauchny 298409 Crimean Astrophysical Observatory, Nauchny 298409 Crimean Astrophysical Observatory, Nauchny 298409 30 09 2024 5 3 14 17 23 09 2024 Copyright (c) 2024 Olga Andreeva, Valentina Abramenko, Valentina Malashchuk 2024 Olga Andreeva, Valentina Abramenko, Valentina Malashchuk The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Acta Astrophysica Taurica is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

The paper investigates a cyclic relation between coronal holes (CHs) and solar activity (SA) indices. Based on observational data obtained with the SDO/AIA instrument in the Fe XII 19.3 nm line between May 13, 2010 and May 13, 2021, the properties of polar and nonpolar coronal holes are studied. The features of each group are considered in detail, and the relationship of CH areas with the phase of the solar cycle is established. During the period under study, a north-south (N-S) asymmetry of the hemispheres was detected both in the SA indices and in the localization of the maximum areas of polar and nonpolar CHs. The determining role of polar CHs of the southern hemisphere and nonpolar CHs of the northern hemisphere was revealed throughout the cycle, which manifested itself in the SA dynamics of the hemispheres and the solar disk as a whole.

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