Further analyses show the variation of earth rotation rate and sunspot cycle length have important role on the climate abrupt change in the Qinghai-Xizang Plateau.
3
由于地球自转和公转的原因,太阳紫外线辐射强度呈现出以一年和一天为周期的规律性变化。
Because of rotation and revolution of the earth, solar ultraviolet radiation intensity varies in diurnal and annual periodic.