[Explanation] Recently, four high-spectral resolution payloads developed by the Hefei Institute of Material Science of the Chinese Academy of Sciences entered the scheduled orbit with the Long March 4 Bingyao 40 carrier rocket, marking that my country’s hyperspectral observation capabilities in the field of atmospheric environment have been further improved , Will meet the urgent needs of China in comprehensive environmental monitoring and other aspects, and provide domestic hyperspectral data guarantee for the operational operation of remote sensing monitoring of the global atmospheric environment.
[Concurrent] Liu Jianguo, Dean of Hefei Research Institute, Chinese Academy of Sciences
The high spectral resolution observation satellite is the follow-up satellite of the Gaofen-5 satellite developed by us under the leadership of the Shanghai Eighth Research Institute of China Aerospace Science and Technology, but it is an operational observation satellite. On the basis of the five satellites, after verifying these technologies, in the future, it is necessary to carry out operational applications, and carry out operational observations of polluting gases and greenhouse gases, including atmospheric PM2.5.
[Explanation] According to reports, the satellite is equipped with a total of seven remote sensing instruments. The four atmospheric monitoring payloads developed by the Hefei Research Institute are the main atmospheric greenhouse gas monitor (GMI) and the atmospheric trace gas differential absorption spectrometer (EMI). , Atmospheric aerosol multi-angle polarization detector (DPC), high-precision polarization scanner (POSP).
Among them, the high-precision polarization scanner not only has higher detection accuracy and polarization accuracy for PM2.5, but also can be "cross-calibrated" with the atmospheric aerosol multi-angle polarization detector to make the observation data more accurate.
[Concurrent] Xiong Wei, Deputy Director, Anguang Institute, Hefei Research Institute, Chinese Academy of Sciences
This time, the polarization scanner is mounted on the Gaofen 5 02 star. Compared with the 01 star, it is a new load. The characteristic of this load is that it uses non-imaging high detection accuracy and high polarization accuracy. What is a feature of the technical solution?
Its polarization detection accuracy is extremely high. Our industry language is called "cross calibration", and its accuracy can be transferred to non-imaging (load). Then such a benefit is that it images one by one and combines it with non-imaging. After that, we can achieve a relatively high level of detection accuracy of PM2.5.
[Explanation] According to Xiong Wei, the four atmospheric monitoring loads successfully launched this time can conduct single-day global monitoring of pollutant gases such as carbon dioxide, methane, nitrogen dioxide, sulfur dioxide, ozone, and formaldehyde in the atmosphere. China's national strategies such as "air pollution prevention" and "coordinated detection of ozone and PM2.5" have broken the history of relying on foreign monitoring data in the past.
[Concurrent] Liu Wenqing, Academic Director of Anguang Institute, Hefei Research Institute of Chinese Academy of Sciences, Academician of Chinese Academy of Engineering
The data obtained from foreign countries cannot be real-time. For example, I must know the situation of tomorrow today, or know the situation of today. Foreign data are lagging for a long time. You take a look at it by chance. We can’t solve long-term problems, so we must have our own high technology and (must have) our own data, so as to satisfy our country’s long-term data support, so I think technology is one of the most important aspects, but there is no such thing. With technological independence, you cannot have deterrent independence, and even less can you have this kind of independence of the country.
[Explanation] At present, the four payloads will continue to operate on hyperspectral observation satellites to dynamically monitor China's air pollution status and implement air pollution prevention and control tasks.
In addition, the Hefei Institute of Material Science of the Chinese Academy of Sciences has also undertaken the development of multiple satellite payloads such as the atmospheric environment monitoring satellite, helping to win the "Blue Sky Defense War".
[Concurrent] Liu Jianguo, Dean of Hefei Research Institute, Chinese Academy of Sciences
We are based on the current launch of high-spectral resolution satellites. Later, we will complete the development tasks of atmospheric environment monitoring satellites and high-precision greenhouse gas monitoring satellites. Then these tasks will be launched in the next two years. Our country's satellite network observation and operation of global air pollution and greenhouse gases supports our country's coordinated control of PM2.5 and ozone, and supports our country's work related to carbon emission reduction and carbon peaking in the long run.
Liu Honghe reports from Hefei, Anhui
Editor in charge: [Ji Xiang]