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SUMMARY:SPC Seminar – Space – Dr. Emma Davies (GeoSphere Austria)
DESCRIPTION:Speaker: Dr. Emma Davies (GeoSphere Austria)\n \nTitle: Corona
 l Mass Ejections of Solar Cycle 25 – Insights from In Situ Multi-Spacecr
 aft Measurements\n\nAbstract: The complex processes affecting the propagat
 ion of interplanetary coronal mass ejections  (ICMEs) make understanding 
 and predicting their physical properties and global structure challenging 
 from both fundamental and practical space weather perspectives. Multi-spac
 ecraft observations of ICMEs across varying longitudinal and radial separa
 tions provide valuable insights into their general properties\, expansion\
 , and interactions with the solar wind environment during propagation. How
 ever\, by tracking the properties of individual events\, we often find sig
 nificant variability compared to average trends.\n\nAs we enter the declin
 ing phase of Solar Cycle 25\, we investigate the events of this cycle that
  follow previously determined relationships and those that deviate to ask 
 whether we could better predict their impact using upstream solar wind mon
 itors. To this end\, we use the recently updated HELIO4CAST lineup catalog
 ue (https://helioforecast.space/lineups) which includes ICMEs observed by 
 Parker Solar Probe\, Solar Orbiter\, BepiColombo\, STEREO A\, and Wind to 
 assess the local expansion of ICMEs measured at spacecraft in the inner he
 liosphere and at 1 au\, comparing these to global expansion rates. We pres
 ent examples of CMEs that caused the strongest geomagnetic storms of this 
 solar cycle\, using upstream measurements to produce hindcasts of the geom
 agnetic impact compared to observations\, demonstrating both the importanc
 e and limitations of such in situ measurements for constraining future spa
 ce weather forecasts.\n
URL:https://www.imperial.ac.uk/events/213124/spc-seminar-space-dr-emma-davi
 es-geosphere-austria/
DTSTART;TZID=Europe/London:20260917T110000
DTEND;TZID=Europe/London:20260917T120000
LOCATION:711c\, Huxley Building\, South Kensington Campus\, Imperial Colleg
 e London\, London\, SW7 2AZ\, United Kingdom
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