zed high ure area and onrotatin Earth. Earth Descending (a)Pressure gradient force alon 800 气徒与反气镜 s rotation and a "twist to air movements. Upper-level geostrophic High High-pressure ow-pressure elop on. ind lows flows (b)Pressure gradient+Coriolis forces(uppe osphere winds Surface friction adds a countering force to Coriolis ⑤ prod Surface winds-Northern Hemisphere and into ure winds cross Coriolis force Surface winds-Southern Hem 气旋与反气旋