Bartein, PatrickYoung, Alanna2015-01-142015-01-14https://hdl.handle.net/1794/18702The annual cycles of human- and lightning-caused fires create distinct patterns in time and space. Evaluating these patterns reveals intimate relationships between climate, culture, and ecoregions. I used unique graphical visualization techniques to examine a dataset of 516,691 records of human- and lightning-caused fire-start data from the western United States for the 20-year period 1992-2011. Human-caused fires were ignited throughout the year and near human populations, while lightning-caused fires were confined almost exclusively to the summer and were concentrated in less-populated areas. I utilize graphs and maps to demonstrate the benefit of a longer time frame in strengthening the findings and describing the underlying interactions among climate, society, and biogeography.en-USCreative Commons BY 4.0-USClimateData visualizationsWestern United StatesWildfiresElectronic Thesis or Dissertation