The Embrace Magnetometer Network (Embrace MagNet) uses a series of magnetometers over South America to monitor the Earth's space environment and to study space weather. One of the common techniques used to study the effects of the magnetic disturbances in the globe is through the quiet day curve (QDC) of the geomagnetic field components. These types of QDC are calculated based on geomagnetic field data collected by magnetometers in the five quietest days for each month at each station. Thus, we developed and implemented an empirical model based on the QDC H component obtained by the Embrace MagNet. This model ought to be used as a prediction device when data are not available. The proposed algorithm is a function of the solar activity, the day of the year, and the universal time, which was adjusted based on 12 stations across to the South America sector between 2010 and 2018. Our results show that the values computed by this model are in good agreement with the observational data for the QDC. Finally, it is essential to mention that the QDC model presented in this study is the only available predicting tool of the Embrace MagNet stations to date, providing data with a high confidence level in the Brazilian sector.

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开发估计巴西部门的安静日曲线（QDC）的经验模型

Embrace磁力计网络（Embrace MagNet）在南美使用一系列磁力计来监视地球的太空环境并研究太空天气。用于研究地球磁干扰影响的常用技术之一是通过地磁场分量的安静日曲线（QDC）。这些类型的QDC是根据磁力计在每个站点每个月的五个最安静的日子中收集的地磁场数据计算得出的。因此，我们基于QDC H开发并实施了一个经验模型Embrace MagNet获得的组件。当数据不可用时，该模型应该用作预测设备。所提出的算法是太阳活动，一年中的一天和世界时间的函数，该函数是根据2010年至2018年南美地区的12个站点进行调整的。我们的结果表明，该模型计算出的值与QDC的观测数据高度吻合。最后，必须提及的是，这项研究中提出的QDC模型是迄今为止Embrace MagNet站唯一可用的预测工具，为巴西行业提供了高置信度的数据。