Shortcut to the present page:  http://envs.au.dk/borex

The video below illustrates the effect of atmospheric stability conditions on dispersion of a smoke plume. The 3 minute video clip was recorded during the Borex dispersion experiments in Borris, Denmark in 1992 and 1994.

A very visible plume was released from a 21 m high mast.

There is a sequence from the afternoon of July 23, 1992, between 16 and 18 hours local time. Strong insolation and weak winds lead to spectacular movements of the smoke plume, illustrating the large dispersion taking place under unstable atmospheric conditions (convective conditions).

A second sequence shows the completely contrasting behaviour that occurs in the evening (stable conditions), when the plume has an apperance almost like a pencil for hundreds of meters.

Click on the link below the video ("Spectacular smoke plume..."). This leads you to the video repository Vimeo.com where the video can be found.

Below the video window you'll find a Download button, which allows you to choose between various formats.

You may freely use the video.

The video was created in collaboration between Risø National Laboratory (since 2007 part of Technical University of Denmark, DTU) and National Environmental Research Institute (since 2007 part of Aarhus University, Denmark).

Contact persons:

Helge Rørdam Olesen, Department of Environmental Science, Aarhus University (hro@envs.au.dk)

Torben Mikkelsen, Technical University of Denmark. Department of Wind Energy, DTU Risø Campus (tomi@dtu.dk)

The video can be found via http://envs.au.dk/borex