Atmospheric Mesostructure and Clear Air Turbulence
Atmospheric Mesostructure and Clear Air Turbulence

Author: Gary J. Thompson

Publisher:

Published: 1973

Total Pages: 32

ISBN-13:

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The mesoscale atmospheric structure in and around regions of clear air turbulence (CAT) is investigated. It is shown that the formation and dissipation of clear air turbulence at several different altitudes is closely related to changes in the atmospheric mesostructure. The turbulence is located in the region of two sloping boroclinic zones and can be attributed to Kelvin-Helmholtz instability resulting from strong wind directional oscillations between these two stable layers. The meteorological sounding data reveal that the lower stable layer and the layer of strong directional oscillations undergo significant upward vertical displacement. The change in turbulence activity can be directly correlated with this motion, and the breakdown of the turbulence and the double stability structure occur almost simultaneously. (Author).

Atmospheric Mesostructure and Clear Air Turbulence
Atmospheric Mesostructure and Clear Air Turbulence

Author: Gary J. Thompson

Publisher:

Published: 1973

Total Pages: 0

ISBN-13:

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The mesoscale atmospheric structure in and around regions of clear air turbulence (CAT) is investigated. It is shown that the formation and dissipation of clear air turbulence at several different altitudes is closely related to changes in the atmospheric mesostructure. The turbulence is located in the region of two sloping boroclinic zones and can be attributed to Kelvin-Helmholtz instability resulting from strong wind directional oscillations between these two stable layers. The meteorological sounding data reveal that the lower stable layer and the layer of strong directional oscillations undergo significant upward vertical displacement. The change in turbulence activity can be directly correlated with this motion, and the breakdown of the turbulence and the double stability structure occur almost simultaneously. (Author)

The Nature of the Mesoscale Wind and Temperature Structure During a Case of CAT
The Nature of the Mesoscale Wind and Temperature Structure During a Case of CAT

Author: Gary J. Thompson

Publisher:

Published: 1973

Total Pages: 28

ISBN-13:

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An examination of the atmospheric mesostructure in regions of clear air turbulence by means of a special network of radiosondes revealed further evidence that Kelvin-Helmholtz (K-H) instabilities may be responsible for the formation of CAT. Significant CAT was encountered in the region of a relatively weak jet maximum. Rapid shear intensification occurred in this region, however, as the result of the development of large wind direction oscillations. A baroclinic zone was observed to form prior to and at the same level as the strongest turbulence. (Author).

The Nature of the Mesoscale Wind and Temperature Structure During a Case of CAT
The Nature of the Mesoscale Wind and Temperature Structure During a Case of CAT

Author: Gary J. Thompson

Publisher:

Published: 1973

Total Pages: 0

ISBN-13:

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An examination of the atmospheric mesostructure in regions of clear air turbulence by means of a special network of radiosondes revealed further evidence that Kelvin-Helmholtz (K-H) instabilities may be responsible for the formation of CAT. Significant CAT was encountered in the region of a relatively weak jet maximum. Rapid shear intensification occurred in this region, however, as the result of the development of large wind direction oscillations. A baroclinic zone was observed to form prior to and at the same level as the strongest turbulence. (Author)

Occurrence and Causes of High-level Turbulence
Occurrence and Causes of High-level Turbulence

Author: COLORADO STATE UNIV FORT COLLINS.

Publisher:

Published: 1963

Total Pages: 7

ISBN-13:

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The project has been organized in three phases: (1) photographic field measurement program, (2) aircraft measurements, and (3) synoptic and theoretical studies on clear-air turbulence (CAT) and atmospheric mesostructure. The re search results of this project have been pub lished previously. The findings are summarized and recommendations as to application of results and areas of future research are given. (Author).