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叶绿素荧光对CO2反演的影响及校正方法研究

Influence of Chlorophyll Fluorescence on Retrieval Accuracy of Carbon Dioxide and the Correction Method

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摘要

针对植物叶绿素荧光(fluorescence)对CO2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CO2柱平均干空气体积混合比(XCO2)的影响。模拟计算表明,当忽略荧光的影响时,在极端情况下XCO2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0.755 μm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。

Abstract

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.

Newport宣传-MKS新实验室计划
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中图分类号:P413

DOI:10.3788/aos201838.0901004

所属栏目:大气与海洋光学

基金项目: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

收稿日期:2018-03-15

修改稿日期:2018-04-17

网络出版日期:2018-04-23

作者单位    点击查看

蒋芸:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026
叶函函:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室, 安徽 合肥 230031
王先华:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室, 安徽 合肥 230031
段锋华:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026
吴浩:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026
吕松:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026

联系人作者:叶函函(yehhgo@gmail.com); 蒋芸(jyustc@163.com);

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引用该论文

Jiang Yun,Ye Hanhan,Wang Xianhua,Duan Fenghua,Wu Hao,Lü Song. Influence of Chlorophyll Fluorescence on Retrieval Accuracy of Carbon Dioxide and the Correction Method[J]. Acta Optica Sinica, 2018, 38(9): 0901004

蒋芸,叶函函,王先华,段锋华,吴浩,吕松. 叶绿素荧光对CO2反演的影响及校正方法研究[J]. 光学学报, 2018, 38(9): 0901004

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