Forbush decrease


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Forbush decrease

[′fȯr‚bu̇sh di′krēs]
(astrophysics)
A sudden decrease in cosmic-ray intensity which occurs a day or two after a solar flare, and at the same time as the commencement of magnetic storms and auroral activity.
References in periodicals archive ?
By utilizing atmospheric data taken from both ground- and satellite-based stations, as well as atmospheric modeling, the researchers in the new study were able to develop a list of 26 of the strongest Forbush decrease events of the last several decades, ranked by their influence on the ionization of the lower atmosphere.
While the newly discovered effect of Forbush decreases on clouds is too small to have longterm temperature implications, the researchers believe their findings suggest that clouds could be impacted by slower solar changes that occur over tens to hundreds of years, and thus could influence the radiation budget and, consequently, global temperatures.