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  1. The wind at Little Rock exhibited a flow that was directed at an angle toward that isotherm. This wind direction was from __ temperature regions.
    CWS 4 - 6 – FL18
    a. higher toward lower
    b. lower toward higher
  2. This flow of air at Little Rock was in an area of __ air advection. Figures 1 and 2 show that both types of air advection patterns are often found somewhere on weather maps, regardless of the time of year.
    a. cold
    b. warm
  3. Compare the Little Rock advection pattern to that of Oklahoma City, just north of the frontal boundary. The wind flows and air mass advection patterns on opposite sides of the developing low-pressure center displayed __ air flow advection patterns, consistent
    with the circulation expected around a low-pressure center.
    a. similar
    b. opposing
    In this later winter-time case, the cold temperatures and the closely spaced isotherms reflected strong air advection patterns. In general, stronger winds, more perpendicular flow across isotherms, and closer spacing of isotherms indicate stronger thermal advection patterns.
  4. The strong converging wind flows would strengthen the temperature gradient and aid in enhancing uplift (enhancing the low pressure) along that portion of the frontal boundary in the vicinity of Oklahoma-Arkansas. In contrast, what would hinder strong air advection patterns?
    a. weaker winds
    b. more oblique (less direct) flow across isotherms
    c. widely spaced isotherms
    d. all of the above
    Wind flow patterns around Highs and Lows with associated frontal systems typically show cold air advection to the east of Highs and behind cold fronts (in the Northern Hemisphere). Warm air advection usually occurs ahead of cold fronts, behind warm fronts and west of Highs.
    As we advance through the fall and winter seasons, successive movement of colder air will
    provide more frequent cold-air advections for the country. The temperature contrasts of adjacent
    air masses will likely make for energetic storm systems.

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