Complex sentence: He compiles statistics for weather events such as what occurred in the Mid-Atlantic during the 2009-2010 winter, and most notably, compiled the lists of records set by the hurricane seasons of 2005,2007, and 2008.
Split into simpler sentences: He compiles statistics for weather events such as what occurred in the Mid-Atlantic during the 2009-2010 winter. He also compiled the lists of records set by the hurricane seasons of 2005,2007, and 2008.