Research on the dynamics and thermal effects of the Tibetan Plateau has drawn increasing attention from experts both at home and abroad. Over the years, the observation and study of plateau meteorology has continued. In 1979, the first Qinghai-Xizang Plateau meteorological scientific experiment took the spatial-temporal changes of surface radiation balance and thermal balance in the plateau as the main observation research project. Research on the radiation climate of the plateau has made important progress, revealing many significant observational facts. The observation station was set up in the reform of the western part of the plateau, Dangxiong in the central part, and the Qamdo area in the southeast of China. The observational stations were mainly used for systematic observation of upward and downward short-wave radiation and long-wave radiation as well as heat exchange in the ground, and the advanced and automated observation instruments. It is higher than the first Qinghai-Tibet Plateau meteorological science experiment. The total radiation recorder can effectively monitor and record the total radiation on the ground. Add WeChat, you want to have: Planetary Reducer Hybrid Stepper Motor 42 Stepper Motor,Brushless Dc Motor,2 Phase Stepper Motor,Planetary Stepper Motor Changzhou Hebe Interantional Trade Co., Ltd , https://www.hebe-motion.com
The monthly variation of the daily average atmospheric radiation can also be seen when the atmospheric radiation during the observation period of Xiongdu and Changdu increased with time, while there was no obvious change trend during the observation period, and the interday change was relatively large, indicating that the change was in the air. The water vapor content varies with the local weather system, and the water vapor in the air of Changdu and Xiongjin formations tends to increase. The day-to-day peak-to-valley distribution of the total amount of long-wave radiation emitted by the Harmony, Dangxiong, and Changdu total radiation, reflected radiation, atmospheric radiation, and ground emission. They reflect the influence of different weather processes, and the valleys in the figure correspond to periods of precipitation. The daily total peaks and valleys of radiation balance components in Qamdo frequently change alternately, which is related to the different precipitation processes after the rainy season in southeastern Tibet. Although there are more precipitation days and more rainfall after late May, most of them are thunderstorms formed by local convection. There is still a certain amount of sunshine during the day. Therefore, even during the rainy season, total radiation is still relatively large at some times. When the male observation period is also more rainy, but the rainfall is small, and the duration of precipitation is short, the total daily radiation has little effect on the total, and the inter-day change curve is relatively stable with small amplitude. Although the daily total amount of radiation balance during the observation period is also more obvious, the total radiation is similar to that of Dangxiong, and the total daily amount below 200w/resistance is rarely seen, and there is no obvious dry and wet conversion characteristics. The daily total dry and wet periods of radiation balance components in Qamdo have abrupt changes. The first deep valley of total radiation, reflected radiation, and long-wave radiation released from the ground is the sign of the wet period.
The total radiation recorder's measurement analysis found that the effective radiation is the difference between ground long-wave radiation and atmospheric radiation, also known as long-wave net radiation. The daily variation of effective radiation is basically the same as the ground long-wave radiation. The difference in the daily dry period of the three stations is greater than the wet period, especially when Xiong. When the male-female period is dominated by cloudy and wet weather, not only the atmospheric radiation is increased, but also the ground temperature is decreased, and the long-wave radiation of the ground is reduced. Therefore, in the wet period where precipitation concentrates, long-wave surface radiation and effective radiation are particularly small. The daily difference of effective radiation is only 69w/mZ, and the daily difference of dry effective radiation reaches 20OW/mZ. 