Does air pressure change when raining and what happens to air in high and low pressure systems and what do you mean by high pressure area and low pressure area?
Atmospheric pressure goes down when weather conditions become more severe thunder clouds rolling in, the sky darkening, wind picking up, etc. Atmospheric (barometric) pressure goes up when weather conditions level out clouds clear, humidity drops, etc.Low-pressure systems "suck" air into them because nature wants everything to have equal pressure. By doing this, they generally create winds and undesirable weather. High-pressure systems, on the other hand, have more air pressure than their surroundings. Low-pressure systems are associated with clouds and precipitation that minimize temperature changes throughout the day, whereas high-pressure systems normally associate with dry weather and mostly clear skies with larger diurnal temperature changes due to greater radiation at night and greater sunshine during the day. A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. A high pressure system has higher pressure at its center than the areas around it. Wind blows away from high pressure. High-pressure areas usually are areas of fair, settled weather. Low-pressure areas are places where the atmosphere is relatively thin. Winds blow inward toward these areas. This causes air to rise, producing clouds and condensation. Atmospheric pressure is an indicator of weather. When a low-pressure system moves into an area, it usually leads to cloudiness, wind, and precipitation. High-pressure systems usually lead to fair, calm weather.
low pressure is the area of lowest pressure and high pressure area of high pressure, the wind low pressure in north hemisphere rotatess aroun low pressure in anticlockwise direction towards the center of low pressures which causes rain. in high pressure the air rotates clockwise out of the center and downward motion and no rain because of downward motion,
there are other types of low like thermal low in south asia causing floodind form due to surface heating
High-pressure areas usually are areas of fair, settled weather. Low-pressure areas are places where the atmosphere is relatively thin. Winds blow inward toward these areas. This causes air to rise, producing clouds and condensation. Low-pressure areas tend to be well-organized storms. In general, low pressure leads to unsettled weather conditions and high pressure leads to settled weather conditions. At the surface, winds flow counterclockwise around low pressure, and clockwise around high pressure. The slightly inward moving air in low pressure causes air to converge and since it can't move downward due to the surface, the air is forced upward, leading to condensation and precipitation as discussed earlier. The opposite occurs with high pressure. The slightly inward moving air in low pressure causes air to converge and since it can't move downward due to the surface, the air is forced upward, leading to condensation and precipitation as discussed earlier. The opposite occurs with high pressure. Movement of air caused by temperature or pressure differences is wind. Where there are differences of pressure between two places, a pressure gradient exists, across which air moves: from the high pressure region to the low pressure region. Movement of air caused by temperature or pressure differences is wind. Where there are differences of pressure between two places, a pressure gradient exists, across which air moves: from the high pressure region to the low pressure region. Low barometric pressure can be indicated weather-wise by a storm. That's because, when atmospheric pressure decreases, air rises and is condensed into water, causing it to fall back down as rain
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