The International Incoherent Scatter Radar Workshop, which was held from 18th to 23rd July in Kangerlussuaq, Greenland, had come to an end with a day of interesting and at time very amusing presentations by all seven groups of workshop participants. Since most participants, esp. those who were funded by NSF, flew out only on Monday, we had Sunday off and decided to go on a hike in order to enjoy the landscape surrounding Kangerlussuaq. Of course we just could not leave science out of the equation, and thus we chose Mt Evans as our destination, which is a hill not far from the Sondrestom Incoherent Scatter Radar. On the top of Mt Evans, there was an "aerological station" in the late 1920s and early 1930s (66° 58.25' N, 51° 0.89' W).
Imaging Riometer for Ionospheric Studies (IRIS). The IRIS system measures cosmic radio noise around 38 MHz in 49 narrow beams. The cosmic radio noise is attenuated during particle precipitation events increasing electron density in the upper mesosphere, i.e. the ionospheric D region. The array makes an image of this effect in 49 pixels spanning approximately a square area of 250 km by 250 km at that altitude.
First photo by Phil Erickson, other photos by Thomas Ulich; click on the photos for bigger versions.