Climatology of aerosol component concentrations derived from multi-angular polarimetric POLDER-3 observations using GRASP algorithm
Climatology of aerosol component concentrations derived from multi-angular polarimetric POLDER-3 observations using GRASP algorithm
复制标题
使用 GRASP 算法从多角度偏振 POLDER-3 观测得出的气溶胶成分浓度的气候学
DOI：
10.5194/essd-14-3439-2022
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发表时间：
2022-07
影响因子：
11.4
通讯作者：
Lei Z
中科院分区：
文献类型：
--
作者：
Lei Li;Yevgeny Derimian;Cheng Chen;Xindan Zhang;Huizheng Che;Gregory L. Schuster;David Fuertes;Pavel Litvinov;Tatyana Lapyonok;Anton Lopatin;Christian Matar;Fabrice Ducos;Yana Karol;Benjamín Torres;Ke Gui;Yu Zheng;Yuanxin Liang;Yadong Lei;Jibiao Zhu;Lei Z
抽象的。这项研究介绍了通过最近开发的一种算法方法获得的气溶胶成分浓度的气候学，即大气和表面特性(GRAP)/分量的通用检索。它适用于从地球反射率的偏振和方向性观测的整个档案(POLDER-3)。GRACH/组分方法的概念细节在于直接提取气溶胶形态(组分分数)，而无需中间提取气溶胶光学特性。尽管对衍生气溶胶成分产品进行全球验证具有挑战性，但所获得的结果符合关于不同区域气溶胶类型的一般知识。此外，我们将GRASH衍生的炭黑(BC)和粉尘成分与现代研究和应用回顾分析第2版(MERRA-2)产品的成分进行了比较。GRAP和MERRA-2提供的物种的空间和时间分布基本一致。然而，差异出现在生物质燃烧和粉尘排放强烈的地区；讨论了差异的原因。其他派生成分，如吸收的(BC、棕色碳(BRC)、矿物粉尘中的氧化铁含量)和散射(硫酸铵和硝酸铵、有机碳、未吸收的粉尘)气溶胶的浓度，是验证和潜在调整化学传输模型的稀缺但迫切需要的信息。从GRASP/Component得到的气溶胶光学特性(例如，气溶胶光学厚度(AOD)、ängström指数(AE)、单次散射反照率(SSA)、精细和粗模气溶胶光学厚度(AODF和AODC))被发现与气溶胶机器人网络(AERONET)地面参考数据很好地吻合，并与以前应用于POLDER-3数据的GRASH优化、高精度(HP)和模型反演版本完全一致。因此，所介绍的广泛的气候学产品为了解全球和区域气溶胶物种分布的多样性和趋势提供了机会。除了气溶胶光学特性之外，还获得了气溶胶成分的气候学，这为气溶胶分布提供了更多有价值的、定性的新见解，从而证明了多角度偏振(MAP)卫星观测作为先进卫星观测气溶胶反演的下一个前沿领域的优势。广泛的基于卫星的气溶胶成分数据集预计将有助于改善全球气溶胶排放和成分分辨辐射强迫估算。GRASH/组件产品公开可用(https://www.grasp-open.com/products/，上次访问：2022年3月15日)，当前研究中使用的数据集在https://doi.org/10.5281/zenodo.6395384下注册(Li等人，2022b)。
Abstract. The study presents a climatology of aerosol composition concentrations obtained by a recently developed algorithm approach, namely the Generalized Retrieval of Atmosphere and Surface Properties (GRASP)/Component. It is applied to the whole archive of observations from the POLarization and Directionality of the Earth's Reflectances (POLDER-3). The conceptual specifics of the GRASP/Component approach is in the direct retrieval of aerosol speciation (component fraction) without intermediate retrievals of aerosol optical characteristics. Although a global validation of the derived aerosol component product is challenging, the results obtained are in line with general knowledge about aerosol types in different regions. In addition, we compare the GRASP-derived black carbon (BC) and dust components with those of the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) product. Quite a reasonable general agreement was found between the spatial and temporal distribution of the species provided by GRASP and MERRA-2. The differences, however, appeared in regions known for strong biomass burning and dust emissions; the reasons for the discrepancies are discussed. The other derived components, such as concentrations of absorbing (BC, brown carbon (BrC), iron-oxide content in mineral dust) and scattering (ammonium sulfate and nitrate, organic carbon, non-absorbing dust) aerosols, represent scarce but imperative information for validation and potential adjustment of chemical transport models. The aerosol optical properties (e.g., aerosol optical depth (AOD), Ångström exponent (AE), single-scattering albedo (SSA), fine- and coarse-mode aerosol optical depth (AODF AND AODC)) derived from GRASP/Component were found to agree well with the Aerosol Robotic Network (AERONET) ground reference data, and were fully consistent with the previous GRASP Optimized, High Precision (HP) and Models retrieval versions applied to POLDER-3 data. Thus, the presented extensive climatology product provides an opportunity for understanding variabilities and trends in global and regional distributions of aerosol species. The climatology of the aerosol components obtained in addition to the aerosol optical properties provides additional valuable, qualitatively new insight about aerosol distributions and, therefore, demonstrates advantages of multi-angular polarimetric (MAP) satellite observations as the next frontier for aerosol inversion from advanced satellite observations. The extensive satellite-based aerosol component dataset is expected to be useful for improving global aerosol emissions and component-resolved radiative forcing estimations. The GRASP/Component products are publicly available (https://www.grasp-open.com/products/, last access: 15 March 2022) and the dataset used in the current study is registered under https://doi.org/10.5281/zenodo.6395384 (Li et al., 2022b).
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影响因子：
5
作者：
S. Dey;S. Tripathi;Ramesh P. Singh;B. Holben
通讯作者：
S. Dey;S. Tripathi;Ramesh P. Singh;B. Holben
DOI：
10.1117/12.283865
发表时间：
1997-10
期刊：
--
影响因子：
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
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作者：
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