Abstract:Based on EUV images and magnetograms obtained with Solar Dynamics Observatory the relationship between the total area of coronal holes (CH) of middle and low latitudes (|φ| < 60 ο ) and the sun's general magnetic field (GMF) for the period from 19 January to 07 December 2012 is investigated. It has been shown that CH boundaries determined with CHI-MERA (https://solarmonitor.org) and SPoCA (https://helioviewer.org) algorithms can differ significantly. The correlation coefficient between the weighted total area … Show more
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