ICESTAR

1
Heliosphere impact on geospaceK. Kauristie, R.
Harrison, A. Weatherwax, R. Stamper

• IPY core project (63) conducted by ICESTAR, IHY
  and 27 other multinational consortia
• Science about coupling phenomena driven by solar
  activity
• Between the different atmospheric layers
• Between the magnetosphere and ionosphere
• Between the different hemispheres
• Data portals combining Arctic and Antarctic
  ground-based observations and satellite data.
• Data availability information from multiple
  sources
• Refined data products

2
Example Interhemispheric relationships in
meso-scale auroras

• Global scale auroras are known to be similar, but
  how about mesoscales (L100-1000 km)?
• ASC images The real conjugate point of a station
  can move hundreds (tens) of km in longitude
  (latitude) during one hour.
• Future challenge Better understanding of the
  magnetic conjugacy concept.

Reference Sato et al., GRL 2005
3
Example Effects of solar proton events on middle
atmospheric chemistry

• ENVISAT Decrease in the stratospheric ozone
  content after the proton events of the Halloween
  storm.
• Future challenges Comprehensive modelling for
  more quantitative understanding. Effects of
  energetic electron precipitation?

Figure A. Seppälä, Finnish Meteorological
Institute
4
Example Campaign during IPY

• Incoherent scatter radars plan to provide
  continuous observations during the IPY years
• The EISCAT Svalbard Radar is planned to be the
  primary data source. Significant contributions
  also from Sondrestrom and Resolute Bay
• Long homogenous data sets will be important input
  for modelling and statistical studies addressing
  coupling processes in different time scales.
• Discussions going on about linking Madrigal with
  virtual observatories digesting data from
  distributed sources.

Reference A. van Eyken, 2006