Climate change caused by volcanic eruptions

This Bachelor thesis is engaged in climate changes caused by volcanic eruptions and explains, why after major volcanic eruptions follow volcanic winters. The first chapter shows the formation of volcanic activity and relations to climate changes. In three parts of the second chapter are described sectional factors (solar activity, problems of ocean currents and at-mospheric flow) to climate changes. In the third chapter are mentioned issues of science discipline of paleoclimatology and historical climatology, which combines a lot of disciplines as a geology, botany, zoology and more. The fourth chapter presents the main part of the work, because in this part is a description of the selected major volcanic eruptions of the last millennium and their consequences in the period after an explosion from the viewpoint of abnormalities in the weather. In conclusion of the Bachelor thesis is a search for an answers to question: Risks of powerful eruptions in the future and their impact on the human population