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风云三号卫星紫外臭氧垂直廓线反演算法及对比反演试验 被引量:12

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摘要 从正演模型和反演计算两个方面,介绍风云三号卫星紫外臭氧垂直廓线反演算法FY-V1.0,并比较了与美国NOAA目前两种业务反演算法V6和V8的差异.利用美国NOAA/SBUV(/2)的L1b观测数据,开展FY-V1.0与V8的对比反演试验.对比反演试验结果表明:在全球低(纬度数<30°)、中(30°≤纬度数<60°)、高(60°≤纬度数<90°)3个纬度带,FY-V1.0反演廓线都与V8产品很好地吻合,FY-V1算法相对反演精度在±2以内.初步分析表明,卫星紫外臭氧垂直廓线反演算法的误差主要有3个来源:一是下垫面理想化假设,二是多次散射和反射辐射的辐射查算表插值计算,三是先验臭氧廓线X0缺乏对中国区域的代表性.分析认为,未来FY-V1.0算法反演精度改进主要在二个方面:一是利用TOMRAD模式开展多次散射和反射辐射的直接计算,代替目前的辐射查算表插值计算方法;二是通过增加臭氧廓线气候数据库中国区域廓线,或者改进中国区域先验臭氧廓线X0生成方法,改进其对中国区域的代表性.
出处 《自然科学进展》 北大核心 2008年第10期1136-1142,共7页
基金 国家自然科学基金(批准号40775024) 中国气象局气候变化专项(批准号CCSF2007-10)资助项目
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