Community Research and Development Information Service - CORDIS


As part of the European Tracer Experiment (ETEX), 2 successful atmospheric experiments were carried out in October and November 1994. Perfluorocarbon (PFC) tracers were released into the atmosphere in Monterfil, Brittany, and air samples were taken at 168 stations in 17 European countries for 72 hours after the release. Upper air tracer measurements were made from 3 aircraft. During the first experiment a westerly air flow transported the tracer plume north-eastwards across Europe. During the second release the flow was eastwards. The results from the ground sampling network allowed the determination of the cloud evolution as far as Sweden, Poland and Bulgaria. Typical background concentrations of the tracer are used around 5 to 7 fl/l in ambient air. Concentrations in the plume ranged from 10 to above 200 fl/l.

Additional information

Authors: NODOP K, JRC Ispra (IT);CONNOLLY R, JRC Ispra (IT);GIRARDI F, JRC Ispra (IT)
Bibliographic Reference: Paper presented: Sixth Topical Meeting on Emergency Preparedness and Response, San Francisco (US), April 22-25, 1997
Availability: Available from (1) as Paper EN 40365 ORA
Record Number: 199710272 / Last updated on: 1997-04-01
Original language: en
Available languages: en