ИСТИНА

The parameters of solar wind (SW) measured in the near-Earth space depend on type and position of coronal sources, on the level of solar activity, also taking into account probable distortion in the heliosphere due to interaction of various types of SW. This work presents the results of analysis of the SW sources during the rising phase of the solar cycle 24 (2010-2012) in a relationship with the parameters of the associated SW flows near Earth such as velocity, flow density and ion composition. The coronal sources prominent in this period - coronal holes, small areas of open magnetic fields near active regions and transient sources associated with solar activity have been investigated using the EUV solar images at different wavelengths obtained by AIA/SDO as well as the magnetograms obtained by HMI/SDO. In order to evaluate the impact of different coronal sources on the SW speed, the obtained relationships were used in the empirical SW models, and then the results were compared with measurements. The results of this study can help to improve the accuracy of the space weather forecast.