First sulfur dioxide observations from the environmental trace gases monitoring instrument (EMI) onboard the GeoFen-5 satellite

• 作者: Congzi Xia Cheng Liu Zhaonan Cai Fei Zhao Wenjing Su Chengxin Zhang Yi Liu
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: SHORT COMMUNICATIONS
• 页码范围: 969-973
• 页数: 5页
• 语种: 英文

摘要

Previous studies reported a significant overestimation of the Sentinel-5 Precursor (S-5P) official operational SO2 product in global SO2 emissions [1,2].As such, China successfully launched the GaoFen-5 satellite into the sun-synchronous polar orbit on May 9, 2018 [3].Onboard the GeoFen-5 satellite is a payload called Environmental Trace Gases Monitoring Instrument (EMI;Fig.1a).It is the first Chinese satellite-based ultraviolet-visible imaging spectrometer that can be used to detect trace gases, such as ozone (O3), formaldehyde (HCHO), nitrogen dioxide (NO2), and sulfur dioxide (SO2) [4].Thus, China has independently developed a hyperspectral and high-spatial-resolution satellite for the remote sensing of tropospheric pollutants, so it cuts off its long-term dependence on foreign satellite data.