The areas located between the 30'and 40’ parallels of latitude in both hemispheres are mostly affected by the shifting of air pressure bells -Explain with suitable examples
Ans = there is a close between temperature and air pressure .When temperature is high the air gets heated,expands becomes lighter and rises up creating a low pressure area.High pressure occurs when temperature is low . Sun is the main source of this heat. We know that different latitudes received either vertical,oblique or trangential rays of the sun. This is why there is temperature vartiation at different latitudes. The angle of incidence of sunlight is different on the same place at different times of the year.This is due to the apparent movement of the sun.Change in temperature and pressure at any area also takes place due to this.
The pressure belts shift about 5digree to 10digree to the north or south with the apparent northward (22nd December to 21st June) and southward (21st June to 22nd December) March of the sun respectively.the Tropic of Cancer in the Northern hemisphere and the Tropical of Capricorn in the Southern Hemisphere are the farthest limit of Sun’s apparent movement. So the swing of pressure belts is prominent within the tropical pressure belts of either hemisphere and not so pronounced beyond the tropical belts . The global wind system is also greatly affected by this shifting of pressure belts.
The area lying between 25digree to 40digree latitudes are most affected by this shift of pressure belts.these areas are affected by trade winds during summer and westerlies in winter.In summer (solstice)the eastern part of the continents in this region get rainfall from the onshore North east trade.e.g. In Argentina;but the western parts do not get rain from the offshore winds.e.g., Chile in South America.
Answers
Answer:
The area lying between 25digree to 40digree latitudes are most affected by this shift of pressure belts. these areas are affected by trade winds during summer and westerlies in winter.In summer (solstice)the eastern part of the continents in this region get rainfall from the onshore North east trade
Explanation:
Air expands when heated and gets compressed when cooled. This results in variations in the atmospheric pressure.
The differences in atmospheric pressure causes the movement of air from high pressure to low pressure, setting the air in motion. Atmospheric pressure also determines when the air will rise or sink.
Air in horizontal motion is wind. The wind redistributes the heat and moisture across latitudes, thereby, maintaining a constant temperature for the planet as a whole.
The vertical rising of moist air forms clouds and bring precipitation.