摘要
针对植物叶绿素荧光(fluorescence)对CO_2反演精度影响重视不足的问题,调研了全球植被荧光分布,模拟分析了荧光对大气CO_2柱平均干空气体积混合比(XCO_2)的影响。模拟计算表明,当忽略荧光的影响时,在极端情况下XCO_2的反演误差可达15×10^(-6);但是在全物理反演方法中同步反演0.755μm处的荧光时,可把反演误差校正到0.5×10^(-6)以内。用TCCON (The Total Carbon Column Observing Network)站点Park Falls附近的GOSAT (Greenhouse Gases Observing Satellite)夏季的数据进行反演,发现同步反演荧光可以把误差从6×10^(-6)校正到2×10^(-6)以内。上述实验结果表明,在高精度需求情况下,植物叶绿素荧光是一个不可忽略的因素。
Aiming at the insufficient attention to influence of plant chlorophyll fluorescence on the accuracy of CO2 inversion,we investigate the global vegetation fluorescence distribution,and simulate the influence of fluorescence column-averaged CO2 dry-air mixing ratio（XCO2）.The simulation shows that when chlorophyll fluorescence is neglected,the inversion maximum error of XCO2 can reach 15×10^（-6）.This bias can be controlled within 0.5×10^（-6） by synchronous inversion fluorescence in a full-physics based retrieval.We retrieve the summer data of the Greenhouse Gases Observing Satellite（GOSAT）near Park Falls TCCON（The Total Carbon Column Observing Network）site.It is found that the error is corrected from 6×10^（-6） to less than 2×10^（-6） based on synchronous inversion fluorescence.This research shows that chlorophyll fluorescence cannot be neglected in high precision CO2 inversion.
作者
蒋芸
叶函函
王先华
段锋华
吴浩
吕松
Jiang Yun;Ye Hanhan;Wang Xianhua;Duan Fenghua;Wu Hao;Lu Song(Key Laboratory of Optical Calibration and Characterization of Chinese Academy of Sciences,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei,Anhui 230031,China;University of Science and Technology of China,Hefei,Anhui 230026,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2018年第9期21-26,共6页
Acta Optica Sinica
基金
国家重点研发计划(2017YFB0504000
2017YFB0504001)
高分辨对地观测系统重大专项(民用部分)项目(32-Y20A17-9001-15/17)
国家自然科学基金项目(41601393
41505020)
中国科学院合肥物质科学研究院"十三五"规划重点支持项目
关键词
大气光学
散射效应
三光谱带
荧光
反演
atmospheric optics
scattering effect
three spectrum hands
fluorescence
retrieval
