研究收集整理了1984-2015年太湖区域342幅Landsat系列卫星遥感影像,利用ENVI软件FLAASH模块计算获取了区域大气能见度均值,通过太湖周边苏州、无锡、常州3市地面自动站能见度监测值加以验证,并在此基础上对1984-2015年该地区大气能见度遥感监测结果进行了分析与评价.研究结果表明:太湖地区在20世纪80年代能见度水平相对较好,20世纪90年代后逐渐下滑,总体呈下降趋势.2015年遥感反演能见度均值为14.80 km,与1984年的21.46 km相比下降了31.05％,下降速率约为0.21 km/a.%The mean atmospheric visibility in Taihu area was estimated by the FLAASH (embedded module in ENVI) from 342 pieces of Landsat satellite image during the period of 1984 to 2015.The estimated atmospheric visibility was validated by the in situ observation data,which monitored by the automatic station in Suzhou,Wuxi and Changzhou.Based on the analysis and assessment of this estimated atmospheric visibility,the results indicated that:the visibility in Taihu area was relatively good in 80s,and showed a decreasing trend from 90s.In generally,the visibility reduced from 21.46km (1984) to 14.80km (2015) with the decreasing rate of 0.21 km/a from remote sensing observation result.
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