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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Time-series MODIS Image-based Retrieval and Distribution Analysis of Total Suspended Matter Concentrations in Lake Taihu (China)
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Time-series MODIS Image-based Retrieval and Distribution Analysis of Total Suspended Matter Concentrations in Lake Taihu (China)

机译：基于时间序列MODIS图像的太湖总悬浮物浓度的反演和分布分析（中国）

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Although there has been considerable effort to use remotely sensed images to provide synoptic maps of total suspended matter (TSM), there are limited studies on universal TSM retrieval models. In this paper, we have developed a TSM retrieval model for Lake Taihu using TSM concentrations measured in situ and a time series of quasi-synchronous MODIS 250 m images from 2005. After simple geometric and atmospheric correction, we found a significant relationship (R = 0.8736, N = 166) between in situ measured TSM concentrations and MODIS band normalization difference of band 3 and band 1. From this, we retrieved TSM concentrations in eight regions of Lake Taihu in 2007 and analyzed the characteristic distribution and variation of TSM. Synoptic maps of model-estimated TSM of 2007 showed clear geographical and seasonal variations. TSM in Central Lake and Southern Lakeshore were consistently higher than in other regions, while TSM in East Taihu was generally the lowest among the regions throughout the year. Furthermore, a wide range of TSM concentrations appeared from winter to summer. TSM in winter could be several times that in summer.
机译：尽管已经投入大量精力使用遥感图像来提供总悬浮物（TSM）的概要图，但是对通用TSM检索模型的研究仍然有限。在本文中，我们使用就地测量的TSM浓度和2005年以来的准同步MODIS 250 m图像的时间序列，开发了太湖TSM检索模型。简单的几何和大气校正之后，我们发现了显着的关系（R =现场测得的TSM浓度与3带和1带的MODIS带归一化差异之间的关系为0.8736，N = 166）。由此，我们检索了2007年太湖八个地区的TSM浓度，并分析了TSM的特征分布和变化。 2007年模型估算的TSM的天气图显示了明显的地理和季节差异。中央湖和南部湖岸地区的TSM一直高于其他地区，而东太湖地区的TSM通常是全年中最低的。此外，从冬季到夏季，各种各样的TSM浓度出现了。冬季的TSM可能是夏季的几倍。

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