Can anone define high and low pressure systems.?
A pressure system is a region of the Earth’s atmosphere where air pressure is unusually high or low. High and low pressures develop (and dissipate) constantly due to thermodynamic interactions of temperature differentials in the atmosphere and water in oceans, lakes, and other bodies of water. Pressure systems on weather maps: ============================ On weather maps, which often display weather fronts and pressure systems graphically, low-pressure systems are depicted with a capital L, unless they are tropical storms or tropical cyclones (in which case the symbols for those weather systems are used). High-pressure systems are depicted with an H. The steepness of the pressure gradient can be observed according to the density of isobars, or lines on the map at which pressure is equal. Low pressure system: ================= The components of storms are attracted to regions of low pressure. For this reason, heavy precipitation and overcast conditions are often associated with low-pres
