Typical Appearance In Vertical Cross Sections
- Isentropes
- A shallow frontal zone in the lower troposphere
- The tropopause often unclear
- Temperature advection
Cold advection within and behind the frontal zone - Divergence
Convergence within the frontal zone and divergence above it - Vertical Motion (Omega)
Ascending motion ahead of the frontal zone and descending motion behind it
23 March 2009/11.29 UTC NOAA 18 VIS0.6; VIS0.9; IR10.9 RGB image; position of vertical cross section indicated
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Temperature advection
23 March 2009/12 UTC - Vertical cross section; black: isentropes (θe), red thick: temperature advection - WA,
red thin: temperature advection - CA
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