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Cover in Nature:

Click here to get to the press release for the Nature paper, 'Asymmetric auroral intensities in the Earth's Northern and Southern hemispheres'.


IPY-ICESTAR research

The scientific goals of the Norwegian ICESTAR/IHY Program are closely linked to the international ICESTAR Program and will focus on Inter-hemispherical Studies of magnetosphere-ionosphere coupling the heliospheric drivers and the effects of geomagnetic disturbances in the mesosphere and stratosphere.




Aurora seen from Iceland and Syowa (Antartica) simultaneously (Sato et al., 2005)

An O-shaped aurora seen from ground

The overall objective of the program is to assess
  • how the various constituents of the magnetosphere-ionosphere system repond to geomagnetic disturbances under different heliospheric conditions, and
  • how these disturbances interact with the polar upper and middle atmosphere.

We will determine
  • the timing and location of substorm onsets in the two hemispheres.
  • the conjugacy or non-conjugacy of theta aurora to obtain information about structure and dynamics of the closed magnetosphere during positive z - component of the interplanetary magnetic field.
  • the magnetic reconnection rates (dayside and nightside) to clarify the energy/mass exchange with the solar wind.
  • the interaction with the middle atmosphere by use of satellite and ground-based observations of minor constituents in the middle atmosphere, and measures of energetic particle precipitation (EPP) to further develop models of the EPP-induced chemical changes, in particular with regard to nitrogen species.


We will obtain new knowledge about interaction between magnetosphere and ionosphere by radar observation of ion outflow and related fine scale ionospheric structures and plasma physics, and also from observations of conductance, convection patterns, polar cap potentials and field aligned currents in the two hemispheres.


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LINKS
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Norwegian:

EISCAT
NILU
UiO
IPY Norway
IPY UiB
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International:

IPY ID 63
ICESTAR
IPY
IHY
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