中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A modified sliding spectral method and its application to COSMIC radio occultation data

文献类型:期刊论文

作者Xu, Xian-Sheng1; Guo, Peng2; Hong, Zhen-Jie3
刊名JOURNAL OF EARTH SYSTEM SCIENCE
出版日期2014-12-01
卷号123期号:8页码:1749-1758
关键词COSMIC occultation multipath inversion MSS method
英文摘要In the moist lower troposphere, a limitation of the sliding spectral (SS) method is the restriction of the resolution of bending angle profiles because of the atmospheric multipath effect and noise. A modified sliding spectral (MSS) method is proposed in this paper to improve the inversion resolution of SS method in the moist lower troposphere. Simulation results show that the noise in the signal may cause inversion error in the classical SS method. The MSS method can decrease the influence of the noise to some extent. The SS and MSS methods were used to process COSMIC (Constellation Observing System for Meteorology, Ionosphere, and Climate) atmPhs profiles from DOY (day of year) 71 DOY 100 in 2007. The retrieved refractivity profiles were compared with those from the corresponding ECMWF (European Centre for Medium-Range Weather Forecasts) analysis. The results show that the SS method contains systematic positive biases in the 3-10 km height range and systematic negative biases below 3 km. The MSS method, in comparison to SS method, has decreased the maximum positive bias in the range of 3-10 km height from 0.37% to 0.23% in the northern hemisphere, from 1.3% to 0.25% in the tropics, and from 0.60% to 0.35% in the southern hemisphere. The biases of the MSS method are comparable to those announced for the COSMIC atmPrf profile; the latter is inverted by full spectrum inversion (FSI) method.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Geosciences, Multidisciplinary ; Multidisciplinary Sciences
研究领域[WOS]Geology ; Science & Technology - Other Topics
关键词[WOS]LOWER TROPOSPHERE ; HOLOGRAPHIC ANALYSIS ; SIGNALS ; MISSION
收录类别SCI
语种英语
WOS记录号WOS:000347512600002
源URL[http://119.78.226.72/handle/331011/18197]  
专题上海天文台_天文地球动力学研究中心
作者单位1.Zhejiang Univ, Ningbo Inst Technol, Ningbo 815000, Zhejiang, Peoples R China
2.NAOCAS, Shanghai Astron Observ, Shanghai, Peoples R China
3.Wenzhou Univ, Sch Math & Informat Sci, Wenzhou 325060, Zhejiang, Peoples R China
推荐引用方式
GB/T 7714
Xu, Xian-Sheng,Guo, Peng,Hong, Zhen-Jie. A modified sliding spectral method and its application to COSMIC radio occultation data[J]. JOURNAL OF EARTH SYSTEM SCIENCE,2014,123(8):1749-1758.
APA Xu, Xian-Sheng,Guo, Peng,&Hong, Zhen-Jie.(2014).A modified sliding spectral method and its application to COSMIC radio occultation data.JOURNAL OF EARTH SYSTEM SCIENCE,123(8),1749-1758.
MLA Xu, Xian-Sheng,et al."A modified sliding spectral method and its application to COSMIC radio occultation data".JOURNAL OF EARTH SYSTEM SCIENCE 123.8(2014):1749-1758.

入库方式: OAI收割

来源:上海天文台

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