For the first time, my country has launched a comprehensive parallel comparison of Beidou soundings, and the system is expected to be officially operational by the end of next year.

1. According to news from this site on July 27, according to the China Meteorological Administration, at 7:50 on July 26, the first set of 500 hPa information from 120 Beidou sounding stations across the country was uploaded to China in real time for the first time The "Tianqing" system of the Meteorological Bureau's meteorological big data cloud platform marks the official comprehensive launch of parallel comparison of Beidou soundings in my country.

Parallel comparison, that is, in the same period and in the same area, L-band sounding and Beidou sounding are used to conduct simultaneous observations, and a comprehensive and systematic comparative analysis of the observation data is carried out. Since the launch of the Beidou Sounding System Network Observation Operational Pilot in the Guangdong Meteorological Department in August 2022, after two years of unremitting efforts, the construction of the Beidou Sounding System of 120 sounding stations has been completed, and parallel operations have been carried out nationwide for the first time. By comparison
2. , important progress has been made in upgrading the meteorological sounding system. In terms of timeliness, the overall timeliness of Beidou sounding ascending section data is better than that of L-band sounding data; in terms of data quality, taking wind speed as an example, click on the data comparison interface of any sounding station, and you can see the representative data of Beidou A green line of sounding data and a red line representing L-band sounding data almost overlap, with occasional fluctuations. "
This means that the Beidou sounding data is accurate overall and more accurate in details
3. ." said Guo Qiyun, deputy director of the base office of the Meteorological Observation Center. Previously, on July 1, the China Meteorological Administration launched the country’s first batch of parallel comparisons of Beidou soundings. On July 20, this year's No. 4 typhoon "Paibian" struck. Meteorological departments in Guangdong, Fujian, Guangxi, Hainan and other provinces (regions) used the Beidou sounding system to conduct surveys of the South China Sea with meteorological satellites, drones, radars, etc. Typhoon collaborative observations and Beidou sounding descending segment observation data have filled the gap in afternoon sounding data, strongly supporting the potential of linear convection in front of the platform and the study and judgment of wind intensity after landfall. On July 24, this year's No. 3 typhoon "Gemei" approached the coast of Fujian. Sounding stations in Hongjia, Zhejiang, Fuzhou, Fujian and Guangdong carried out Beidou drift soundings. The data were used for forecasting services and provided support for typhoon track forecast verification. , and achieved good results.
4. In 2023, the Guangdong Meteorological Department will use Beidou sounding data on a regular basis for the first time in the fields of numerical models, weather forecasts, satellite remote sensing and other fields. With the help of accurate Beidou sounding data, the Guangdong Meteorological Department will conduct 72-hour and 90-hour analysis of Typhoon Haikui. The path errors were reduced by 3.94% and 2.86% respectively, and the accuracy of 72-hour precipitation forecast was greatly improved.
5. This site learned from the China Meteorological Administration that in the next step, the China Meteorological Administration will continue to promote the upgrading and upgrading of meteorological soundings.
It is expected that by the end of 2025, my country will have built a ground-to-air Internet of Things with a station spacing of about 150 kilometers. Beidou The sounding system is officially operational and the meteorological sounding system has been upgraded
6. .

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