环保科技
環保科技
배보과기
Environmental Protection and Technology
2015年
5期
34-38,53
,共6页
MODIS%暗像元法%气溶胶光学厚度
MODIS%暗像元法%氣溶膠光學厚度
MODIS%암상원법%기용효광학후도
MODIS%Dark Target method%aerosol optical thickness
近年来空气质量备受人们关注,气溶胶光学厚度作为空气污染的指标之一,可反映空气质量状况。文章利用 Terra 卫星 MODIS 数据作为数据源,基于6S 模型、暗像元法反演南宁市气溶胶光学厚度,将卫星反演结果与地面观测 CE -318气溶胶光学厚度反演结果进行精度验证,结果表明 MODIS 反演 AOD 在南宁市具有可行性。基于 MODIS 的 AOD 反演结果表明,南宁市整体空气质量良好,少数区域的气溶胶光学厚度较高,具有由西北区域向中部及南部转移的现象。
近年來空氣質量備受人們關註,氣溶膠光學厚度作為空氣汙染的指標之一,可反映空氣質量狀況。文章利用 Terra 衛星 MODIS 數據作為數據源,基于6S 模型、暗像元法反縯南寧市氣溶膠光學厚度,將衛星反縯結果與地麵觀測 CE -318氣溶膠光學厚度反縯結果進行精度驗證,結果錶明 MODIS 反縯 AOD 在南寧市具有可行性。基于 MODIS 的 AOD 反縯結果錶明,南寧市整體空氣質量良好,少數區域的氣溶膠光學厚度較高,具有由西北區域嚮中部及南部轉移的現象。
근년래공기질량비수인문관주,기용효광학후도작위공기오염적지표지일,가반영공기질량상황。문장이용 Terra 위성 MODIS 수거작위수거원,기우6S 모형、암상원법반연남저시기용효광학후도,장위성반연결과여지면관측 CE -318기용효광학후도반연결과진행정도험증,결과표명 MODIS 반연 AOD 재남저시구유가행성。기우 MODIS 적 AOD 반연결과표명,남저시정체공기질량량호,소수구역적기용효광학후도교고,구유유서북구역향중부급남부전이적현상。
the issue of air quality has attracted much attention in recent years. As one of indicators of air pollution,aerosol optical thickness can reflect air quality. The research used MODIS data as source,and applied 6S model and dark target method to carry out inversion calculation of aerosol op-tical thickness of Nanning city. In order to verify the accuracy,we compared the result with that from the ground observation by CE - 318 and found that MODIS inversion of aerosol optical thickness is a reliable method for Nanning city. The overall air quality in terms of aerosol optical thickness in Nan-ning is fine except that in few regions the aerosol optical thickness is higher and aerosol migrates from north - west to central and southern areas.