The Features of the Atmospheric Heat Source Over the Qinghai-Xizang Plateau and the Effect of Clouds on Radiation Oscillations in Summer 1979

In this paper, based on the data of 17 stations (including scientific experiment data) on the Qinghai-Xizang Plateau covering the period June–August 1979, those components such as longwave radiation, shortwave radiation, latent heat and flux of sensible heat, are calculated by a direct method. On the basis of the above calculations, the average atmospheric heat budget over the Plateau is obtained. Compared with the results obtained from the indirect method, our results show that the main contribution to the atmospheric heat source comes from the longwave radiation. In addition, the relations of the atmospheric heating field with the circulation of pre-and post-monsoons, and with the circulation of active and non-active monsoons over the Plateau are discussed. The power spectra of radiative heating are also computed. It is confirmed that the oscillations within a period of 8–12 days do exist in both longwave and shortwave radiation.