The urban heat island effect

1、市区市区郊区郊区郊区郊区citysuburb suburbThe Urban heat island effectThermal circulation ：Because of difference temperature between the ground formed of air circulation.Thermal circulation is the most simple form of atmospheric motion. Urban heat island effect Thermal circulationThe Urban heat island effect is

2、one kind of thermal ciculartion Process of thermal circulation ：Different temperature of the groundVertical air movementThe difference between the same horizontal pressureHorizontal air movementB A CIf the temperature on the ground is same, so A,B,C has the same near-surface air pressure, and the ai

3、r pressure in A,B,C is equal which is the same elevation in above, also constant pressure surface is parallel with the ground.Small points on the air column, on behalf of air densityConstant Pressure SurfaceB A CConstant pressure surfaceCoolingCoolingHeatingHigh air pressureLow air pressureLow air p

4、ressureLow air pressureHigh air pressureHigh air pressureIf the temperature of A,B,C is different, warm air rises, and cold air down, formation vertical air movement,the air pressure of A,B,C change into different in the same altitude of near the ground and above. Constant pressure surface bent.Smal

5、l points on the air column, on behalf of air densityHigh air pressureLow air pressureLow air pressureCoolingCoolingHeatingB A CHigh air pressureHigh air pressureLow air pressureSince the same air pressure differences in the horizontal plane,so air go from the high pressure area to low pressure, resulting in horizontal air movement.High air pressureLow air pressureLow air pressureHigh air pressureHigh air pressureLow air pressureB A CThe Vertical air movement and the Hor