基于MAX-DOAS的臭氧剖面反演方法研究

IF 4.4 2区地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES

Atmospheric Research Pub Date : 2025-09-12 DOI:10.1016/j.atmosres.2025.108480

Haoyue Wang , Xunhao Ma , Ke Yu , Feihong Xiao , Weiguo Wang

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引用次数: 0

摘要

利用多轴差分吸收光谱（MAX-DOAS）技术对昆明和上海地区的臭氧（O3）剖面进行了检索。通过模拟发现，平流层O3差异斜柱密度（DSCDₛ气象站ᵣ）对对流层O3差异斜柱密度（DSCD气象站ᵣₒₚ）影响显著。Umkehr效应被整合到MAX-DOAS中，O₃DSCDₛ气象站ᵣ从10公里以上的O₃剖面中计算出来，用于将O₃DSCD气象站ᵣₒₚ从总O₃DSCD （DSCD气象站ₒ气象站ₗ）中分离出来。随后，结合差分光学吸收光谱（DOAS）技术和最优估计方法（OEM）反演对流层O₃剖面。以昆明地区的电子化学电池（ECC） O₃测深剖面为参考，将MAX-DOAS （Umkehr）剖面与臭氧监测仪（OMI）、Dobson分光光度计和Brewer分光光度计的验证剖面进行比较，结果表明，MAX-DOAS （Umkehr）剖面与验证剖面的一致性较好，仅在特定高度存在偏差。在对流层顶附近，MAX-DOAS反演结果与ECC数据的相对偏差增大；然而，20 ~ 40 km高度的MAX-DOAS反演对Umkehr效应高度敏感，与ECC数据偏差较小。对于通过MAX-DOAS （OEM）检索的对流层O₃剖面，1 km面层的O₃浓度与ECC数据之间的最大相对偏差为- 7.8%。此外，上海MAX-DOAS （Umkehr）检索到的O₃剖面与OMI剖面一致。总的来说，将DOAS技术与Umkehr原则相结合，可以检索稳定可靠的O₃配置文件。

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Investigation on the method of ozone profile retrieval using MAX-DOAS

The retrieval method for ozone (O₃) profiles was investigated using spectra measured by the Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) technique in Kunming and Shanghai. Through simulations,it was found that stratospheric O₃ differential slant column density (DSCDₛₜᵣₐ) significantly affects tropospheric O₃ differential slant column density (DSCDₜᵣₒₚ). The Umkehr effect was integrated into MAX-DOAS, and O₃ DSCDₛₜᵣₐ calculated from O₃ profiles above 10 km—was used to separate O₃ DSCDₜᵣₒₚ from total O₃ DSCD (DSCDₜₒₜₐₗ). Subsequently,Differential Optical Absorption Spectroscopy (DOAS) technique and the optimal estimation method (OEM) were combined to retrieve tropospheric O₃ profiles. Using Electronic Chemistry Cell (ECC) O₃ sounding profiles in Kunming as a reference, comparisons between MAX-DOAS (Umkehr) profiles and verification profiles from the Ozone Monitoring Instrument (OMI),Dobson spectrophotometers, and Brewer spectrophotometers showed good consistency, with deviations only at specific heights.Near the tropopause, the relative deviation between MAX-DOAS retrievals and ECC data increased;however,MAX-DOAS retrievals at heights of 20–40 km were highly sensitive to the Umkehr effect and exhibited small deviations from ECC data. For tropospheric O₃ profiles retrieved via MAX-DOAS (OEM),the maximum relative deviation between O₃ concentrations in the 1-km surface layer and ECC data was-7.8 %.Additionally, O₃ profiles retrieved by the Shanghai MAX-DOAS (Umkehr) were consistent with OMI profiles. Overall,combining the DOAS technique with the Umkehr principle enables the retrieval of stable and reliable O₃ profiles.

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来源期刊

Atmospheric Research 地学-气象与大气科学

CiteScore

9.40

自引率

10.90%

发文量

460

审稿时长

47 days

期刊介绍： The journal publishes scientific papers (research papers, review articles, letters and notes) dealing with the part of the atmosphere where meteorological events occur. Attention is given to all processes extending from the earth surface to the tropopause, but special emphasis continues to be devoted to the physics of clouds, mesoscale meteorology and air pollution, i.e. atmospheric aerosols; microphysical processes; cloud dynamics and thermodynamics; numerical simulation, climatology, climate change and weather modification.