Sinking air, combines with dry weather and only a few clouds are indicators of a cold front. Cold air is heavier and more dense than warm air.
high pressure.
No, that's high pressure. High pressure has sinking air and fair weather. Low pressure is rising air and usually brings lots of clouds and precipitation.
High clouds indicate the dry air and high pressure of fair weather. so it is true
Globally, a sinking air is associated with clear skies and sunny weather. When you have a cold, dry air mass at high elevations, this air mass will tend to descend, to sink quite slowly since the cold air mass is heavier and denser than the surrounding air. As the cold air descends, this one warms up by adiabatic, compressional heating. Adiabatic is a term which means there are no heat or thermal energy transfer between the system and the environment. Since the air warms up continuously, it will also dry out (the relative humidity will go down but the absolute humidity will remain the same) because a warm air (light, dilated and takes more space) can hold more water vapor than a cold air (heavy, dense and takes less space). This adiabatic process will promote the evaporation within the air parcels, which will thus dissipate clouds and prevent precipiation formation.
the symbol is -^---------- and a upside down (
high pressure.
No, that's high pressure. High pressure has sinking air and fair weather. Low pressure is rising air and usually brings lots of clouds and precipitation.
The weather will be dry and low in humidity.
High clouds indicate the dry air and high pressure of fair weather. so it is true
Cyclones - air cools and clouds form and may cause rainy or stormy weather. Anticyclones - it brings dry and clear weather.
Cyclones - air cools and clouds form and may cause rainy or stormy weather. Anticyclones - it brings dry and clear weather.
High pressure situations are generally associated with fair, sunny weather. As high pressure is an area of sinking air, and air tends to dry out as it sinks, leaving sunny skies.
increasing
Globally, a sinking air is associated with clear skies and sunny weather. When you have a cold, dry air mass at high elevations, this air mass will tend to descend, to sink quite slowly since the cold air mass is heavier and denser than the surrounding air. As the cold air descends, this one warms up by adiabatic, compressional heating. Adiabatic is a term which means there are no heat or thermal energy transfer between the system and the environment. Since the air warms up continuously, it will also dry out (the relative humidity will go down but the absolute humidity will remain the same) because a warm air (light, dilated and takes more space) can hold more water vapor than a cold air (heavy, dense and takes less space). This adiabatic process will promote the evaporation within the air parcels, which will thus dissipate clouds and prevent precipiation formation.
Moist air. Clouds are condensation from water vapor.
fog clouds