China's First Tropospheric Profile Data over Tibetan Plateau
TapTechNews Jun 10th news, on Jun 6th, the Institute of Tibetan Plateau Research, Chinese Academy of Sciences officially announced that China has obtained consecutive 3-year observation data of the tropospheric atmospheric profile over the Tibetan Plateau for the first time, which can provide a data basis for the nowcasting of severe weather, and provide important data support for studying the weather processes and environmental changes above the Tibetan Plateau and evaluating the impact of global change and human activities on water resources. The relevant results have been published in the academic journal Advances in Atmospheric Sciences.
A tropospheric atmospheric profile refers to the vertical distribution data of oxygen, water vapor and other trace gases in the atmosphere at different heights. Observations by releasing sounding balloons can obtain tropospheric atmospheric profiles with high vertical resolution, but the observations are restricted by weather and economic conditions, and the number of daily observations is limited.
Using the information that the brightness temperature data of the 22.2, 30.0 and 51.2 GHz channels increase rapidly before precipitation, the project can predict the occurrence of precipitation on the plateau in advance. The temperature deviation of the Tibetan Plateau atmospheric profile project is smaller than the humidity deviation. The heat island effect observed by the Tibetan Plateau atmospheric profile project in Changdu and Naqu is the most significant.
The heat island effect is a regional climate phenomenon, manifested as the temperature of a region is higher than that of the surrounding areas, which is expressed by the temperature difference (that is, the heat island intensity) between two representative measurement points. The heat island effect of the Tibetan Plateau has a great impact on many elements of the environment such as glaciers and organisms.
According to Chen Xuelong, a researcher at the Institute of Tibetan Plateau Research, Chinese Academy of Sciences, the research team used eight radiosonde stations in the Tibetan Plateau and its adjacent peripheral areas such as Kashgar, Mangya, Naqu, Changdu, Wenjiang, Tingri, Southeast Tibet, and Motuo, and nine microwave radiometers in the Muztag, Ali, Mount Qomolangma, Southeast Tibet, Naqu, Mangya, Changdu, Leshan, and Motuo to newly establish a three-dimensional tropospheric atmospheric observation network over the Tibetan Plateau, which can accurately measure the temperature and humidity of the tropospheric atmospheric over the Tibetan Plateau and monitor the changes in the hydrothermal structure of the tropospheric atmospheric above the plateau.
TapTechNews attaches the link to the original text of the project research results and the download website of the observation data as follows:
http://www.iapjournals.ac.cn/aas/en/article/doi/10.1007/s00376-023-3199-y
https://data.tpdc.ac.cn/zh-hans/data/56277ad2-c83e-4453-8ae2-70cc877a4581/