While human-caused greenhouse gas emissions are responsible for the bulk of the increase in CO2 levels, Australia's bushfires have made the problem measurably worse, underscoring the impact of the catastrophe on the global climate system.
Australia's Bureau of Meteorology (BOM) says the drought is being driven, in part, by warmer sea-surface temperatures impacting rainfall patterns. Air temperatures have also warmed over the past century, increasing the ferocity of droughts and fires.