Year: 2024
Type: article
Abstract: The Atmospheric Environment Monitoring Satellite (AEMS), launched by China in 2022, was equipped with active remote sensing lidar for carbon monitoring. It adopts the Integrated Path Differential Absorption (IPDA) technology to monitor global CO 2 column concentration (XCO 2 ). The calculation of cloud top XCO 2 requires cloud height data. A comparison between SRTM global elevation data and 1,572 nm channel elevation data reveals a coefficient of determination (R 2 ) of 0.998, with an average deviation of 1.24 m. The cloud top XCO 2 observations are consistent with the OCO‐2 and CarbonTracker trends. The ocean carbon uptake rate, assessed by the difference in CO 2 concentration between cloud top and sea surface, is −0.319 mmol/m 2 /h, which is in good agreement with the associated carbon flux data. This demonstrates the great potential of IPDA lidar for remote sensing of cloud top CO 2 and quantifying ocean carbon uptake.
Source: Geophysical Research Letters
DOI: 10.1029/2024gl113309
Institutions: Nanjing University of Information Science and Technology, China Aerospace Science and Technology Corporation, Tianjin Meteorological Bureau, Yale University, Hong Kong University of Science and Technology, Chinese Academy of Sciences, Shanghai Institute of Optics and Fine Mechanics, Ministry of Ecology and Environment, Satellite Application Center for Ecology and Environment
Language: English
Subfield: Global and Planetary Change
Field: Environmental Science
Domain: Physical Sciences
SDG: Climate action
Open Access status: gold
Estimated APC paid: $2,900
Awards: G7045796027, G7943950922, G8611448073
OpenAlex ID: W4404861197