摘要
与世界经济快速增长相伴的碳排放量增加导致了全球气候变暖加剧,已引起国际社会高度关注,减排的呼声高涨。卫星遥感具有宏观、快速、定量、准确等特点,是碳监测最可行、最有效的技术支撑手段之一。为解决现有低轨大气CO_(2)遥感探测中存在的时间分辨率低的问题,提出了一种地球静止轨道大气CO_(2)柱浓度探测的时空联合调制空间外差干涉成像光谱技术。基于该技术研制了高轨高时空分辨大气二氧化碳监测仪原理样机,具有O_(2)-A 0.76μm、CO_(2)弱吸收1.57μm和CO_(2)强吸收2.05μm 3个探测通道,空间分辨率优于3 km@36000 km,可实现CO_(2)探测精度优于2×10^(-6),覆盖中国区域时间分辨率优于3.5 h的探测能力。基于原理样机开展了外场试验以及航飞试验,有效反演了不同目标区域的CO_(2)浓度信息,验证了高轨高时空分辨大气CO_(2)监测仪的技术可行性,为下一代碳监测载荷研制和数据应用提供技术基础。
The increase in carbon emissions accompanying the rapid growth of the world economy has led to global warming,which has aroused a high degree of concern in the international community and a soaring call for emissions reduction.Satellite remote sensing,with its macro,rapid,quantitative and accurate characteristics,is one of the most feasible and effective technical support for carbon monitoring.In order to solve the problem of low temporal resolution in the existing low-orbit atmospheric CO_(2) remote sensing detection,a Spatio-Temporal combined modulation spatial heterodyne Interferometric Imaging Spectroscopy technique(STIIS) for atmospheric CO_(2) column concentration detection in geostationary orbit is proposed.Based on STIIS,a high-orbit,high temporal and spatial resolution atmospheric CO_(2) monitor prototype has been developed,with O_2-A 0.76 μm,CO_(2) weak absorption 1.57 μm and CO_(2) strong absorption 2.05 μm detection channels,and a spatial resolution of better than 3 km@36,000 km.The principle prototype can achieve CO_(2) detection accuracy better than 2×10^(-6) and time resolution better than 3.5 h covering China.Based on the principle prototype,the field test and flight test have been carried out,effectively inverting the CO_(2) concentration information of different target areas,verifying the technical feasibility of the high orbit high spatiotemporal resolution atmospheric carbon dioxide monitor,and providing a technical basis for the development and data application of the next-generation carbon monitoring payload.
作者
熊伟
XIONG Wei(Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Optical Calibration and Characterization of Chinese Academy of Sciences,Hefei 230031,China)
出处
《环境工程》
CAS
CSCD
北大核心
2023年第10期1-8,123,共9页
Environmental Engineering
基金
国家重点研发计划(2022YFB3901800,2022YFB3901803)
国家自然科学基金资助项目(41975033,61975212)
中国科学院重点部署项目资助(JCPYJJ-22010)
中国科学院合肥研究院院长基金(YZJJ202210-TS)。
关键词
二氧化碳
卫星遥感
地球静止轨道
空间外差干涉成像光谱技术
时空联合调制
carbon dioxide
satellite remote sensing
geostationary orbit
spatial heterodyne interferometric imaging spectroscopy
spatio-temporal combined modulation
