Frontal Zones

Frontal Zones

 

the general location of the main atmospheric fronts above the earth’s surface. The frontal zones separate adjacent regions of the earth where different air masses predominate. The location of a frontal zone is caused by the position of the centers of atmospheric activity, which usually shift northward in the summer in the northern hemisphere and southward in the summer in the southern hemisphere. Several arctic and antarctic fronts (between 60° and 80°N lat. and 60° and 80°S lat.) are usually identified, as well as several polar fronts (between 40° and 60°N lat. and 60° and 80°S lat.) and the intertropical fronts (between tropical air masses with different characteristics within a single hemisphere). The zone of intertropical convergence, in its long-term average position, is also considered a frontal zone.

References in periodicals archive ?
Because the frontal zones are typically narrow compared to the diameter of the 2D cyclone mask, the precise location of the frontal line inside the frontal zone is noncritical.
Therefore, our results, which address a long-standing question of dynamical meteorology, rely on the assumption that our automated approaches to identify cyclones, frontal zones, and fronts are meaningful.
As a result, flying conditions tend to be pretty good, deteriorating only along the frontal zones.
I look to see if I'm dealing with a classic cold front, a warm front or the worst combination, an occluded frontal system, and I decide on a flight track that will have me penetrating the frontal zones at their weakest, during the time of day when the weather along such lines is generally the least active.
Northern Illinois, southern Wisconsin, and eastern Iowa were in and near frontal zones from midnight on July 22 until late on July 24.
Other two tilt meters were installed in gallery frontal zones, just behind the superficial loosened zone found in the two said galleries.
Bowman and Iverson (1979) and Owen (1981) mentioned that the frontal zones are areas of enhanced primary productivity, aggregations of plankton, and elevated abundance of nekton.
Murre aggregations were associated with frontal zones between cold Arctic waters and warmer Atlantic water, and in areas with strong stratification in salinity at 15-30 m.
The use of EEG spectral analysis revealed that in frontal zones, there was greater left hemisphere activation or positive emotional reactions (e.
With the development of the potential, there was a translocation of its foci from frontal zones to parieto-temporo-occipital zones or vice-versa, in correspondence with the second P -1' potential.
2013) showed the microphysical evolution of a snowband, which transitioned from mainly moderately rimed dendrites on the eastern (warm) side of a frontal zone to unrimed dendrites and plates on the western (cold) side.