Abstract
The structure and circulations of the cirrus uncinus generating head were determined from aircraft measurements of the temperatures, horizontal wind velocities and particle spectra at different altitudes. Stable layers were found to exist directly above and below the head. The head was found to exist in a region with a dry adiabatic lapse rate. Waves were observed in the stable layer below the head. The head was found to be divided into two regions in active cirrus uncinus. The upshear part of the head is the updraft region, and the downshear part the downdraft region. The vertical velocities in cirrus uncinus were determined from aircraft and Doppler radar measurements. Two mechanisms are suggested for the formation of cirrus uncinus clouds.
| Original language | English |
|---|---|
| Pages (from-to) | 809-819 |
| Number of pages | 11 |
| Journal | Journal of the Atmospheric Sciences |
| Volume | 32 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1975 |