The Chinese HIRAS/FY-3D satellite reveals the first global map

The Chinese HIRAS/FY-3D satellite reveals the first global map

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Satellite remote sensing is a unique technology for monitoring the Earth’s environment globally. Red and yellow shading indicates areas with high ammonia (NH3) Focus around the world, for example, India, West Africa and East China. Credit: Advances in Atmospheric Science

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Satellite remote sensing is a unique technology for monitoring the Earth’s environment globally. Red and yellow shading indicates areas with high ammonia (NH3) Focus around the world, for example, India, West Africa and East China. Credit: Advances in Atmospheric Science

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 at the Chinese Academy of Sciences, in cooperation with Zhang Xingying, a senior researcher at the China Meteorological Administration.

The research paper was published in Advances in atmospheric scienceand appeared as the cover story.

The paper’s lead author, Dr. Zhou Mingqiang, underscores the importance of this landmark 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 the dynamics of atmospheric ammonia,” notes Professor Zhang Xingying, 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 the uncertainty of satellite-based NH3 Monitoring for a comprehensive understanding of 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.

more information:
Minqiang Zhou et al., First global map of atmospheric ammonia (NH3) as observed by the HIRAS/FY-3D satellite, Advances in atmospheric science (2024). doi: 10.1007/s00376-023-3059-9

Magazine information:
Advances in atmospheric science

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