Whi -- Whole Heliosphere and Planetary Interactions
About Whi	English (USA)
The international Whole Sun Month (WSM; 1996, special journal issue) and Whole Heliosphere Interval (WHI; 2008, special journal issue) were coordinated observing and modeling efforts to characterize the three-dimensional, interconnected solar-heliospheric-planetary system. By focussing on a single solar rotation near solar minimum, specific structures and activity could be traced throughout the heliosphere and down into the Earth's space environment and upper atmosphere. We are approaching the end of solar cycle 24, and have an unprecedented range of ground-based and space-based instruments deployed, including the exciting new Parker Solar Probe (PSP). The time is ripe for a third campaign: the Whole Heliosphere and Planetary Interactions (WHPI). The campaigns have extended their discipline range with each iteration: from Sun-solar wind (WSM) to Sun-solar-wind-geospace (WHI). It is thus appropriate that WHPI will broaden the emphasis further to include planetary magnetospheres and atmospheres, and in particular, planetary space weather. For more information, see our web page https://whpi.hao.ucar.edu To see the collection of prior postings to the list, visit the Whi Archives.
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