Kilometer scale kinetic energy perturbations in the mesosphere derived from EISCAT velocity data
Article first published online: 7 DEC 2012
Copyright 1997 by the American Geophysical Union.
Volume 32, Issue 1, pages 93–101, January-February 1997
How to Cite
1997), Kilometer scale kinetic energy perturbations in the mesosphere derived from EISCAT velocity data, Radio Sci., 32(1), 93–101, doi:10.1029/96RS02988.(
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 2 OCT 1996
- Manuscript Received: 21 JUN 1996
Traditionally, radar instruments which obtain coherent echoes from structures delineated by sharp gradients in refractive index have been used as a means of determining parameters describing neutral turbulence in the middle atmosphere. In these cases the very characteristics of the coherent signals are used. An alternative, somewhat akin to using velocity estimations from meteor trails and trails of artificially introduced racers, is to determine the kinetic energy perturbation from the velocity profiles alone, the latter being available from incoherent scatter radar. Here we describe a method which assumes that the velocity fluctuations are caused by perturbations of a 1-km scale, in the buoyancy subrange, but which still may be indicative of energy flux at the outer scale, illustrated by the remarkable similarity to energy dissipation rates determined by other measurements.