Global climate has been warming persistently. The year 2003 becomes the third warmest year since 1860. During the winter, extreme cold and heavy snow weather was experienced in large parts of Europe, South Asia and the United States. Persistent severe hot wave and drought events occurred over South Asia, central and southern Europe and parts of America. Severe forest fires were in these severe drought regions. Serious floods occurred in South Asia, Southeast Asia during the summer monsoon season. Severe tonadoes hit the United States in May. Activities of North Atlantic hurricanes were frequent from June to November and caused serious damage.