Abstract
AbstractCorrelative and regression analyses of daily ERA‐Interim reanalysis data for three separate solar maximum periods confirm the existence of a temperature response to short‐term (mainly ∼27 day) solar ultraviolet variations at tropical latitudes in both the lower stratosphere and troposphere. The response, which occurs at a phase lag of 6–10 days after the solar forcing peak, consists of a warming in the lower stratosphere, consistent with relative downwelling and a slowing of the mean meridional (Brewer‐Dobson) circulation, and a cooling in the troposphere. The midtropospheric cooling response is most significant in the tropical Pacific, especially under positive El Niño–Southern Oscillation conditions and may be related to a reduction in the number of Madden‐Julian oscillation events that propagate eastward into the central Pacific following peaks in short‐term solar forcing.
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