2. Differentiate High Preasure area and Low Preasure Area (LPA) (HPA)
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2. Differentiate High Preasure area and Low Preasure Area (LPA) (HPA)
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Answer:
High Pressure Area (HPA) and Low Pressure Area (LPA) are important weather systems that affect the atmospheric pressure and wind patterns in a specific area. Here are the differences between the two:
1. Definition: A High-Pressure Area or Anticyclone is a region where the atmospheric pressure is higher than the surrounding areas. It is characterized by descending air, clear skies, and calm weather conditions. In contrast, a Low-Pressure Area or Cyclone is a region where the atmospheric pressure is lower than the surrounding areas. It is characterized by rising air, cloud formation, and often leads to stormy weather conditions.
2. Wind direction: In a High-Pressure Area, air moves outward and clockwise in the Northern Hemisphere and counter-clockwise in the Southern Hemisphere. On the other hand, in a Low-Pressure Area, air moves inward and counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
3. Weather conditions: High-Pressure Areas are typically associated with stable weather conditions, clear skies, and dry weather. In contrast, Low-Pressure Areas are typically associated with unstable weather conditions, cloud formation, and precipitation.
4. Temperature: High-Pressure Areas are often associated with colder temperatures due to the sinking air, while Low-Pressure Areas are often associated with warmer temperatures due to the rising air.
5. Visibility: High-Pressure Areas generally have good visibility due to the clear skies and dry weather. Low-Pressure Areas, on the other hand,often have poor visibility due to cloud formation and precipitation, which can reduce visibility.