地表反射模式对气溶胶成分反演的比较影响

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

Atmospheric Research Pub Date : 2025-09-22 DOI:10.1016/j.atmosres.2025.108507

Shuhui Liu , Lei Li , Xindan Zhang , Cheng Chen , Haoling Zhang , Ke Gui , Yu Zheng , Jingrui Ma , Huizheng Che

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引用次数: 0

摘要

准确表征地表反射率仍然是气溶胶检索算法中的一个关键挑战，特别是在减少与卫星衍生气溶胶成分产品相关的不确定性方面。通过对全球aeronet验证站点POLDER/PARASOL观测数据中气溶胶成分的综合分析，采用GRASP/ component方法，研究了基于Ross-Li和RPV表面反射率模型的气溶胶成分检索的不确定性。我们发现，Ross-Li和RPV模式之间的气溶胶成分反演总体上具有良好的一致性（气溶胶吸收成分：BC的R = 0.90， BrC的R = 0.79， CAI的R = 0.84；气溶胶散射不溶成分：FNAI的R = 0.94， CNAI的R = 0.90；气溶胶散射可溶成分：FNAS+FAWC的R = 0.80， CNAS+CAWC的R = 0.74）。与基于Ross-Li模式的成分反演相比，RPV模式在北非、东亚和东南亚的气溶胶不溶性散射成分较高，而可溶性散射成分较低。这些发现强调了地表反射率参数化在气溶胶成分反演精度中的关键作用，特别是在粗模式主导的区域。

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Comparative impact of surface reflection models on aerosol component retrieval

Accurate characterization of land surface reflectance remains a critical challenge in aerosol retrieval algorithms, particularly in reducing uncertainties associated with satellite-derived aerosol composition products. Through a comprehensive analysis of aerosol component retrievals derived from POLDER/PARASOL observations at global AERONET-validated sites by the GRASP/Component approach, this study investigates the uncertainties in component retrievals based on the Ross-Li and RPV surface reflectance models. We found that these aerosol component retrievals between Ross-Li and RPV models generally show good agreements globally (aerosol absorbing components: R = 0.90 for BC, R = 0.79 for BrC, and R = 0.84 for CAI; aerosol scattering insoluble components: R = 0.94 for FNAI, R = 0.90 for CNAI; aerosol scattering soluble components: R = 0.80 for FNAS+FAWC, R = 0.74 for CNAS+CAWC). Compared to component retrievals based on Ross-Li model, RPV model presents higher aerosol insoluble scattering components but lower soluble scattering components in North Africa, East Asia, and Southeast Asia. These findings highlight the critical role of surface reflectance parameterization in aerosol composition inversion accuracy, particularly for coarse-mode-dominated regions.

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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.