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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >An Improved Global Land Anthropogenic Aerosol Product Based on Satellite Retrievals From 2008 to 2016
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An Improved Global Land Anthropogenic Aerosol Product Based on Satellite Retrievals From 2008 to 2016

机译：基于2008年至2016年的卫星检索的改进的全球土地人为气溶胶产品

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Significant levels of aerosols originate from anthropogenic activities, markedly influencing regional air quality and, consequently, human health. Generally, fine-mode aerosol optical depth (fAOD) data are used to evaluate the concentration of anthropogenic aerosols. Although the moderate resolution imaging spectroradiometer (MODIS) provides fine-mode fraction (FMF) data that can be used to produce fAOD products, these data remain highly uncertain over land, in terms of global validation, relative to Aerosol Robotic Network (AERONET) measurements. To overcome this limitation, we developed an improved global land-scale fAOD product combining the lookup table-spectral deconvolution algorithm (LUT-SDA), generalized additive model (GAM), and MODIS Collection 6.1 aerosol products. Validation of the improved product revealed that over 63% of the fAOD values are within an expected error (EE) envelope of +/-(0.05 + 15%), with strong positive correlations (R-2 = 0.65) and low bias (root-mean-square error = 0.185; mean absolute error = 0.104) compared to AERONET-observed fAOD values. Furthermore, the fAOD developed eliminates the multiple zeroes in the MODIS FMF-based fAODs. In the improved fAOD product, eastern China and northern India exhibit the highest 9-year-mean fAOD loading, with values generally exceeding 0.6. The improved global land fAOD product provides a new avenue with which to obtain data on anthropogenic aerosols and can also be useful in aerosol-climate interaction research.
机译：显着影响区域空气质量，显着影响区域空气质量，造成显着影响区域空气质量。通常，微型气溶胶光学深度（FAOD）数据用于评估人为气溶胶的浓度。虽然适度分辨率成像光谱辐射器（MODIS）提供可用于生产FAOD产品的微型分数（FMF）数据，但这些数据在全球验证方面，相对于气溶胶机器人网络（AEROONET）测量，这些数据仍然非常不确定。为了克服这一限制，我们开发了一种改进的全球陆地队列FAOD产品，组合查找表光卷积算法（LUT-SDA），广义添加剂模型（GAM）和Modis Collection 6.1气溶胶产品。改进产品的验证表明，超过63％的FAOD值在+/-（0.05 + 15％）的预期误差（EE）包络内，具有强的正相关（R-2 = 0.65）和低偏差（根 - 与AeroNet观察到的Faod值相比，eAn-square error = 0.185;平均误差= 0.104）。此外，FAOD开发的FAOD消除了基于MODIS FMF的FAOD中的多个零。在改进的FAOD产品中，华东和印度北部展示了最高的9年平均煤炭装载，价值通常超过0.6。改进的全球土地FAOD产品提供了一种新的大道，可以获得有关人为气溶胶的数据，也可用于气溶胶气候相互作用研究。

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