Rapporteur Talk: Solar and Heliospheric

Abstract

This rapporteur paper summarizes the 127 contributions on solar and heliospheric physics (i.e. the SH sessions) presented during the 38th International Cosmic Ray Conference in Nagoya. Presented works covered a range of topics concerning updates on methods and instruments allowing cosmic rays measurements. Progress done in the modeling of modulation, acceleration and propagation of cosmic rays within the heliosphere was discussed. During the oral presentations and posters variety of topics were discussed. Among them there were deliberated such topics as changeability observed in the galactic cosmic rays (GCR) flux on the ground, i.e. GCR diurnal anisotropy, Forbush decreases, mid-and long-term GCR periodicities. Solar energetic particles (SEP) and ground level enhancements (GLEs) observational and modeling results were presented. Calculation of radiation dose for airplane passengers and crew, as well as astronaut, were reported. Moreover, historical reconstructions were discussed.