Measurement of CO2 Column Concentration Above Cloud Tops With a Spaceborne IPDA Lidar

被引：0
|
作者：
Mao, Zhihua [1 ]
Zhang, Yang [2 ]
Bu, Lingbing [1 ]
Wang, Qin [3 ]
Xiao, Wei [4 ]
Lee, Xuhui [5 ]
Liang, Dingyuan [6 ]
Burhan, Khalid Muhammad [1 ]
Liu, Jiqiao [7 ]
Chen, Weibiao [7 ]
Liu, Sihan [8 ]
Wang, Zhongting [8 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing, Peoples R China
[2] China Aerosp Sci & Technol Corp 8 Acad 509 Res Ins, Shanghai, Peoples R China
[3] Tianjin Meteorol Serv, Tianjin, Peoples R China
[4] Nanjing Univ Informat Sci & Technol, Yale NUIST Ctr Atmospher Environm, Nanjing, Peoples R China
[5] Yale Univ, Sch Environm, New Haven, CT USA
[6] Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Hong Kong, Peoples R China
[7] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Space Laser Commun & Detect Technol, Shanghai, Peoples R China
[8] Minist Ecol & Environm, Satellite Applicat Ctr Ecol & Environm, Beijing, Peoples R China
来源：
GEOPHYSICAL RESEARCH LETTERS | 2024年 / 51卷 / 23期
基金：
中国国家自然科学基金;
关键词：
AEMS; IPDA lidar; cloud top; CO2; comparison; ocean carbon; CARBON-DIOXIDE; OCEAN; SENSITIVITY; AIRCRAFT; NETWORK; PCO(2);
D O I：
10.1029/2024GL113309
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
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 (XCO2). The calculation of cloud top XCO2 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 XCO2 observations are consistent with the OCO-2 and CarbonTracker trends. The ocean carbon uptake rate, assessed by the difference in CO2 concentration between cloud top and sea surface, is -0.319 mmol/m2/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 CO2 and quantifying ocean carbon uptake.
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页数：9
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