Acta Optica Sinica, Volume. 39, Issue 5, 0512001(2019)
Effect of Surface Elevation on Atmospheric CO2 Inversion
The influence of surface elevation on atmospheric CO2 observations is explored from the perspective of forward and inversion of the atmospheric radiation transfer model in this work. The surface elevation data from the shuttle radar topography mission (SRTM) show that the error of the mean surface elevation due to inaccurate satellite pointing in the plains near Beijing is small, with a maximum error of approximately 10 m for a pointing offset of 0.1-10 km. However, in the mountainous areas and in the boundaries between mountainous areas and plains, the error of the mean surface elevation is large, with the maximum errors of 713.98 and 515.61 m, respectively. The CO2 inversion results show that for an elevation change of 100 m, the CO2 column density deviates by 3.29×10 -6. Thus, the research results show that the surface elevation deviation is a critical factor in performing atmospheric CO2 inversion with high precision.
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Song Lü, Xianhua Wang, Hanhan Ye, Yun Jiang, Hao Wu, Qinqin Li, Shichao Wu. Effect of Surface Elevation on Atmospheric CO2 Inversion[J]. Acta Optica Sinica, 2019, 39(5): 0512001
Category: Instrumentation, Measurement and Metrology
Received: Oct. 25, 2018
Accepted: Jan. 2, 2019
Published Online: May. 10, 2019
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