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Low level Jet.

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Presentation on theme: "Low level Jet."— Presentation transcript:

1 Low level Jet

2 Not rare

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8 Nov 13, UTC

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11 Alternative: Low-level diabatic PV on front

12 Inversion summary for the cold-frontal PV anomaly at 0000 UTC 27 Feb 1997: (a) cold-frontal QGPV anomaly at 950 hPa (solid, contour interval 0.5 × 10−5 s−1), (b) geopotential height (dashed, contour interval 5 m) and geostrophic wind (standard plotting convention) recovered from inversion of cold-frontal QGPV anomaly, (c) cross section of QGPV and section-normal geostrophic wind component (m s−1, solid, positive for flow into section; dashed, negative for flow out of section). Section orientation shown in Fig. 4c. (d) As in (c), except Ertel potential vorticity and observed section-normal geostrophic wind speed

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