Explaining Extreme Events of 2012 from a Climate Perspective, a September 5 supplement to the Bulletin of the American Meteorological Society, found that sea-level rise caused by climate change has increased the odds of future storm surge flooding recurrence. The report studied 12 extreme weather events from 2012, and researches discovered climate change was a contributing factor in half of the events. The National Oceanographic and Atmospheric Administration contributed to the report.