The relationship between the magnetic fluxes and areas of coronal holes (CH) at mid and low latitudes |φ |< 60° and the mean magnetic field (MMF) of the sun over the period from January 19 through December 12, 2012, is studied using ultraviolet images and magnetograms obtained with the Solar Dynamics Observatory satellite. It is shown that the boundaries of the CH determined with the algorithms CHIMERA ( https://solarmonitor.org ) and SPoCA ( https://helioviewer.org ) differ significantly. The correlation coefficient between the weighted total area of CHs taking into account the magnetic field polarity and MMF are in the range from 0.82 to 0.88. The CH can make a substantial contribution to the MMF since their fields have an open configuration and are not balanced on the solar disk. In light of the solar dynamo theory and the results obtained here, the annual time delays between the maxima of the Wolf numbers and the values of the MMF are discussed.

中文翻译：

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中低纬日冕洞与太阳平均磁场的关系

研究了2012年1月19日至12月12日中低纬度|φ|< 60°的磁通量与日冕洞（CH）面积与太阳平均磁场（MMF）的关系使用太阳动力学天文台卫星获得的紫外线图像和磁力图。结果表明，使用 CHIMERA ( https://solarmonitor.org ) 和 SPoCA ( https://helioviewer.org ) 算法确定的 CH 边界显着不同。考虑到磁场极性的 CH 加权总面积与 MMF 之间的相关系数在 0.82 到 0.88 的范围内。CH 可以对 MMF 做出重大贡献，因为它们的场具有开放配置并且在太阳盘上不平衡。