Chinese satellite HIRAS/FY-3D reveals the first global map of ammonia
Atmospheric ammonia (NH3It is a rare gas that causes environmental problems and harms human health. Chinese scientists have established a complete physical retrieval algorithm to derive atmospheric ammonia concentration from the Hyperspectral Infrared Atmospheric Sounder (HIRAS) on board China’s FengYun (FY)-3D satellite, providing the first atmospheric NH3 Global map of the plume observed with the HIRAS instrument.
The research was conducted by ZHOU Minqiang, a research associate from the Institute of Atmospheric Physics of the Chinese Academy of Sciences, in cooperation with ZHANG Xingying, a senior researcher at the China Meteorological Administration.
The paper was published in the journal Advances in Atmospheric Sciences (AAS), and appears as the cover story in the journal’s third print issue in 2024.
The paper’s lead author, Dr. Zhou Mingqiang, underscores the importance of this historic achievement, saying that monitoring ammonia levels in the global atmosphere is pivotal to understanding its environmental impact and impact on climate change. “The ability of the HIRAS tool to capture NH3 “Hotspots around the world represent a major leap in our ability to track and understand their spatiotemporal distribution,” he adds.
Heras NH3 The plumes were compared to measurements of the Infrared Atmospheric Sounding Interferometer (IASI), the hyperspectral infrared sounder on ESA’s MetOp series of pole-orbiting satellites, showing good consistency between the two instruments, thus verifying the reliability of FengYun (FY) – 3D satellite ammonia monitoring data. “This is in line with our efforts to use multiple satellite instruments to comprehensively understand atmospheric ammonia dynamics,” notes Professor Zhang Zhengying, corresponding author of the paper.
Professor Zhang also acknowledges that challenges remain. “Although our study represents a big leap, we are still making efforts to improve HIRAS NH3 Recalls. Ongoing research aims to reduce uncertainty about satellite monitoring of NH3 in order to comprehensively understand its global impact.
This pioneering work represents a major step forward in the field of satellite atmospheric monitoring of China, providing important insights into global NH3 distribution. The results promise to advance our understanding of atmospheric composition and its implications for environmental and climate studies.
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