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Gaofen5 satellite atmospheric environment observation load passed in-orbit test review

date: 2019-01-07
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The traditional monitoring of air environmental quality is mainly based on the observation points distributed in the near land, and it is difficult to reflect the entire region. Satellite observation technology has been monopolized by foreign countries. Looking at the news Knews reporter learned that the three core payloads of atmospheric environment observation developed by the Anhui Institute of Optical Fine Mechanics of the Chinese Academy of Sciences and carried on the Gaofen 5 satellite recently passed the on-orbit test review organized by the Eighth Institute of Aerospace Science and Technology of China. It marks a new breakthrough in China's atmospheric environment observation technology.


The three atmospheric detection payloads were launched in May 2018 with Weixingchenggong on the 5th, and boot imaging was achieved in the same month. The three payloads are the Atmospheric Trace Gas Differential Absorption Spectrometer(EMI), the Atmospheric Major Greenhouse Gas Monitor(GMI) and the Atmospheric aerosol Multi-Angle Polarization Sounder(DPC), which respectively undertake the observation tasks of polluting gases, greenhouse gases and particulate matter pollution.


It is reported that in the past, China's atmospheric environment monitoring relied on foreign satellite comprehensive observation data. Because it is not a real-time release of raw data, accuracy and timeliness are difficult to guarantee. Sifuqi, a researcher at the Anhui Institute of Light and Light Technology of the Chinese Academy of Sciences, said that the three payloads can provide global rapid and accurate information on sensitive components of the Earth's atmosphere, and can also analyze the process of generating, transporting, and dissipating surface pollution sources. It will play a positive role in promoting environmental monitoring and supervision, emergency research and evaluation planning.


The results of the review show that EMI has obtained the global distribution of trace gas nitrogen dioxide for the first time in China, and its distribution characteristics are consistent with those of similar satellites in the world. The GHG spectral data obtained by GMI are consistent with the results of similar international satellite observations; DPC has acquired multi-spectral and multi-angle polarization images, successfully inversion of aerosol optical thickness products and cloud phase classification products over the world's land and sea, and has become the only satellite remote sensor that can use polarization technology to detect aerosols in orbit.

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