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首页> 外文期刊>Journal of geovisualization and spatial analysis >Validation of MODIS Aerosol Products with AERONET Measurements of Different Land Cover Types in Areas over Eastern Europe and China
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Validation of MODIS Aerosol Products with AERONET Measurements of Different Land Cover Types in Areas over Eastern Europe and China

机译：与AERONET验证MODIS气溶胶产品测量不同的土地覆盖类型在东欧和中国地区

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摘要

The purpose of this study was to assess the performance of moderate resolution imaging spectroradiometer (MODIS) Collection 6 and 6.1 Dark Target, Deep Blue and Dark Target, and Deep Blue combined aerosol products with a spatial resolution of 10 km over Eastern Europe and China within the period 2001-2018. The data obtained for aerosol optical depth (AOD) was verified with 10 a stations located in various regions. Uncertainty and sample precision was assessed with the use of expected error (EE) over land (+/- (0.05+15%x AOD(AERONET)) and +/- (0.05+20%x AOD(AERONET))), root-mean-square error (RMSE), mean absolute error (MAE), and relative mean bias (RMB). The results showed that Collection 6.1 Dark Target retrieval algorithm surpassed Collection 6, where 58.5-75% retrievals fell within the EE as compared with Collection 6 (36.9-69.8%), with values of RMSE=0.098-0.297 and MAE=0.087-0.24. In Collection 6.1, Deep Blue and Dark Target and Deep Blue combined retrieval algorithms operate better; the retrieval results have been improved as compared with Collection 6: the retrieval results improved from 49.2-70.8% and 53.4-73.6% to 52.3-76.3 and 70.6-87.7% with RMSE=0.101-0.17 and 0.101-0.258, and MAE=0.087-0.127 and 0.078-0.146, respectively. The best results were obtained over the stations in Eastern Europe, and the worst ones over the coastal regions. The results of assessment vary wildly depending on the changes of different types of surface, surface reflectivity, and aerosol models at all areas.
机译：本研究的目的是评估中分辨率成像的性能光谱仪(MODIS)收集6和6.1暗目标,深蓝和暗目标,深蓝色的气溶胶产品与空间相结合解决在东欧和中国10公里在2001 - 2018年期间。气溶胶光学厚度(AOD)验证了10站位于不同地区。不确定性和样本精度评估使用预期的错误(EE)的土地(+ / - (0.05 + 15% x大气气溶胶(AERONET)), x + / - (0.05 + 20%大气气溶胶(AERONET))),均方根误差(RMSE),平均绝对误差(MAE)和相对平均偏差(人民币)。暗目标检索算法超越收集6,检索下降58.5 - -75%在EE 6与集合(36.9 - -69.8%), RMSE值= -0.297和0.098美= 0.087 - -0.24。暗目标和深蓝组合检索算法运行更好;提高了与收集6:检索结果提高49.2 - -70.8%和53.4 - -73.6% 52.3 - -76.3和70.6 - -87.7%RMSE = 0.101 - -0.17和0.101 - -0.258分别美= 0.087 - -0.127和0.078 - -0.146。最好的结果了在东欧,和最坏的沿海地区。根据不同的变化很大类型的表面,表面反射率,气溶胶模型在所有领域。

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