Diamond Airborne Sensing : A Diamond aircraft delivers volcanic ash cloud measurement data
"Since Saturday, a Diamond HK36 MPP (Multi Purpose Platform), operating at MetAir, the Swiss airborne measurement company, is providing the only specific measurement data from the ash cloud of volcano Eyjafjallajökull.
...The results clearly show that the ash particle concentration is remarkably high and noticeably decreases visibility. Additionally, the ash cloud loses altitude very quickly. At the beginning of the measurement flights the cloud was at an altitude of 5000 meters but only nine hours later it had descended to just 2000 meters....
.....are able to fly in the heavy aerosol particle concentration due to being equipped with a special air filter."
Video of the flight here.
Schweizer Fernsehen: SF Videoportal - Tagesschau - Flug in Aschewolke The HK36 MPP is a single engine internal combustion engine aircraft.
Mickjoebill