Publication Abstracts

Knox 1997

Knox, J.A., 1997: Possible mechanisms of clear-air turbulence in strongly anticyclonic flows. Mon. Weather Rev., 125, 1251-1259, doi:10.1175/1520-0493(1997)125<1251:PMOCAT>2.0.CO;2.

The forecasting of clear-air turbulence (CAT) continues to be a challenging problem despite progress made in the understanding of vertical shear (Kelvin-Helmholtz) instabilities. The possible connections between horizontal anticyclonic flows and CAT are addressed. Analytical expressions are derived to show that current CAT diagnostics do not correctly account for the dynamics of strongly anticyclonic situations. In gradient-balanced anticyclonic flows, not-frontogenetical enhancement of vertical shear may lead to CAT. A review of observations, theory and modeling is presented to support the claim that strong anticyclonic relative vorticity can also lead to CAT through the generation of gravity wave activity by geostrophic adjustment and inertial instability. CAT diagnostics are then discussed in light of these claims. Observational work is in progress to investigate the possibility of inertial instability-triggered CAT.

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BibTeX Citation

  author={Knox, J. A.},
  title={Possible mechanisms of clear-air turbulence in strongly anticyclonic flows},
  journal={Mon. Weather Rev.},

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RIS Citation

ID  - kn00100w
AU  - Knox, J. A.
PY  - 1997
TI  - Possible mechanisms of clear-air turbulence in strongly anticyclonic flows
JA  - Mon. Weather Rev.
VL  - 125
SP  - 1251
EP  - 1259
DO  - 10.1175/1520-0493(1997)125%3C1251%3APMOCAT%3E2.0.CO;2
ER  -

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