特征向量数量对反演大气参数的影响The Influence of the Amount of Eigenvector to Retrieval Clear Sky Air Parameter
韩静;官莉;王振会;张雪慧;
摘要(Abstract):
大气温湿信息是天气预报、研究和业务的主要参数。具有通道多、信息量大、光谱窄等优点的AIRS已逐渐成为大气垂直探测的主流和方向。如何从卫星观测到的辐射测值推算出大气参数显得尤为重要。本文运用特征向量法反演晴空大气温度、臭氧廓线,试验不同数量的特征向量对反演晴空大气温度等参数精度的影响。结果表明适当增加特征向量的数量,对改进反演大气温度、臭氧廓线的精度有明显改善。
关键词(KeyWords): 温度廓线;臭氧廓线;反演;特征向量法
基金项目(Foundation):
作者(Author): 韩静;官莉;王振会;张雪慧;
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参考文献(References):
- [1]Bengtsson,L.,Problems of using satellite information in numerical weather prediction,Proc.of a Technical Conference,ESA,1979(SP-143),87-100.
- [2]李俊,曾庆存,晴空时大气红外遥感及其反演问题Ⅰ.理论研究[J],大气科学,1997,21(1):1-9.
- [3]Li,J.,W.W.Wolf,W.P.Menzel et al,Global Sounding of the Atmosphere from ATOVS Measurements:The Algorithm and Validation,Journal of Applied Meteorology,2000(39),1248-1268.
- [4]Guan Li,Allen Huang,Li Jun A Study on Retrieving Atmospheric Profiles From EOS/AIRS Observations[J].ACTA Meteorologica Sinica,2005,19(1):112-119.
- [5]Smith W L,Woolf H M.The Use of Eigen-Vectors of Statistical Covariance Matrices for Interpreting Satellite Sounding Radionmeter Observations[J].J.Atmos Sci,1976,33:1127-1140.
- [6]Strow,L.L.,S.E.Hannon and H.E.Motteler.An Overview of the AIRS Radiative Transfer Model.IEEE Trans.Geosci.Remote Sensing,2003,41(2):303~313.