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  2. Atmospheric model - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_model

    The main assumption made by the thermotropic model is that while the magnitude of the thermal wind may change, its direction does not change with respect to height, and thus the baroclinicity in the atmosphere can be simulated using the 500 mb (15 inHg) and 1,000 mb (30 inHg) geopotential height surfaces and the average thermal wind between them.

  3. Haines Index - Wikipedia

    en.wikipedia.org/wiki/Haines_Index

    The index is calculated over three ranges of atmospheric pressure: low elevation (950-850 millibars (mb)), mid elevation (850-700 mb), and high elevation (700-500 mb). [ 2 ] A Haines Index of 6 means a high potential for an existing fire to become large or exhibit erratic fire behavior, 5 means medium potential, 4 means low potential, and ...

  4. Shortwave (meteorology) - Wikipedia

    en.wikipedia.org/wiki/Shortwave_(meteorology)

    Shortwave trough with associated vorticity. A shortwave or shortwave trough is an embedded kink in the trough / ridge pattern. Its length scale is much smaller than that of and is embedded within longwaves, which are responsible for the largest scale (synoptic scale) weather systems.

  5. Vortex sheet - Wikipedia

    en.wikipedia.org/wiki/Vortex_sheet

    A flat vortex sheet with periodic boundaries in the streamwise direction can be used to model a temporal free shear layer at high Reynolds number. Let us assume that the interval between the periodic boundaries is of length . Then the equation of motion of the vortex sheet reduces to

  6. Vorticity - Wikipedia

    en.wikipedia.org/wiki/Vorticity

    The relative vorticity is the vorticity relative to the Earth induced by the air velocity field. This air velocity field is often modeled as a two-dimensional flow parallel to the ground, so that the relative vorticity vector is generally scalar rotation quantity perpendicular to the ground.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Prognostic chart - Wikipedia

    en.wikipedia.org/wiki/Prognostic_chart

    An automated prognostic chart of the 96-hour forecast of 850 mbar geopotential height and temperature from the Global Forecast System. Atmospheric models are computer programs that produce meteorological information, including prognostic charts, for future times at given locations and altitudes. [10]

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    AOL Mail welcomes Verizon customers to our safe and delightful email experience!