Symptoms of UVH will depend on the cause of the problem. Symptoms can come. on suddenly or slowly, can be mild or severe, or may last for a few days or even. weeks. The most common symptoms include: ï· Dizziness or vertigo (described as a spinning sensation) ï· Poor balance, especially with head turns.
Positive-tilt Trough. An upper level system which is tilted to the east with increasing latitude (i.e., from southwest to northeast). A positive-tilt trough often is a sign of a weakening weather system, and generally is less likely to result in severe weather than a negative-tilt trough if all other factors are equal.
Obliquity (change in axial tilt). As the axial tilt increases, the seasonal contrast increases so that winters are colder and summers are warmer in both hemispheres. Today, the Earth's axis is tilted 23.5 degrees from the plane of its orbit around the sun.But this tilt changes. During a cycle that averages about 40,000 years, the tilt of the axis varies between 22.1 and 24.5 degrees. Because this tilt changes, the seasons as we know them can become exaggerated.s the axial tilt increases, the seasonal contrast increases so that winters are colder and summers are warmer in both hemispheres. Today, the Earth's axis is tilted 23.5 degrees from the plane of its orbit around the sun.