What two centuries of Perth storm records tell us about future climate risk

Australian climate researchers reconstructing two centuries of Perth storm records have uncovered a troubling contradiction. Per The Conversation Australia, scientists at the University of Melbourne digitized nearly two hundred years of historical weather observations, identifying one hundred forty-one severe storms since eighteen thirty. The trend is stark: Perth's winter storms have declined sharply since nineteen seventy, and from twenty ten to twenty nineteen, the city logged fewer storms than any decade in the entire record. Climate scientists attribute the shift to the Hadley cell—a major atmospheric circulation pattern—which is expanding due to warming, pushing the subtropical high-pressure zone toward the poles and depriving southern Australia of its rain-bearing westerly winds. Southwest Australia has lost twenty percent of its winter rainfall since nineteen seventy. Yet here's what concerns the researchers: historical records reveal an even more severe drought between eighteen thirty and eighteen forty-six. That historical precedent means climate projections—which rely heavily on modern datasets—may significantly underestimate the risks ahead.

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