study forecasts a severe climate future for california

Daniel Swain in August just replaced July as Tucson’s hottest month ever recorded

August was Tucson’s hottest month ever recorded, with sizzling temperatures breaking the previous record — set in July. That means a greater fraction of solar energy goes directly into heating the air, rather than evaporating water from the soil — making temperatures quite a bit hotter than they would be otherwise, said Daniel Swain, a UCLA climate scientist.