干旱区生态环境知识资源中心(Arid): Channel selection for carbon monoxide retrievals based on ultra-spectral thermal infrared data

Arid

DOI	10.11972/j.issn.1001-9014.2021.03.016
	Channel selection for carbon monoxide retrievals based on ultra-spectral thermal infrared data
	Zhang Bei-Bei; Wang Ning; Yao Wei-Yuan; Qian Yong-Gang; Ma Ling-Ling; Li Chuan-Rong; Tang Ling-Li; Liu Yao-Kai; Gao Cai-Xia
通讯作者	Wang, N ; Yao, WY (corresponding author), Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Quantitat Remote Sensing Informat Technol, Beijing 100094, Peoples R China.
来源期刊	JOURNAL OF INFRARED AND MILLIMETER WAVES
ISSN	1001-9014
出版年	2021
卷号	40 期号:3 页码:391-399
英文摘要	As the weak absorption intensity and high interference signals in the thermal infrared band of carbon monoxide (CO), it is difficult to retrieve CO profiles with promising accuracy from thermal infrared data. The development and application of ultra-spectral infrared detector make it possible to improve the retrieval accuracy of CO profile. However, the ultra-spectral resolution and the huge channel numbers of the data not only enhance the abundant atmospheric retrieval information, but also induce lots of redundant information. As such, it is necessary to do the channel selection to ensure the accuracy and efficiency of retrieval. In this paper, a channel selection method considering both channel sensitivity and weighting function characteristics is proposed to CO profile retrieval of ultra-spectral infrared data. First, by analyzing the gas sensitivity of the channels in CO absorption band,the channels severely affected by other gases are excluded and initial channel group is obtained. Then, the weighting function characteristics of the initial channel group are studied. The channels located at the bottom and top of the peaks at the CO absorption spectrum, suggesting abundant gas retrieval information about different atmospheric layer, are selected as the final channel selection results. The channel selection method is applied for the winter and summer air masses in Alxa desert area, Beijing-Tianjin area, Yangtze River Delta, and Pearl River Delta. By comparing with the Optimal Sensitivity Profile method (OSP), the channels selected by the proposed method can cover a wider spectral range and have more CO absorption characteristics. Additionally, the application of the proposed method can improve the retrieval accuracy of CO profiles in all the regions and seasons studied in this paper. The best improvement effect was observed in the Alxa desert area in the winter, whose root mean square error (RMSE) was reduced from 3.23x10(-8) g/g to 3.07x10(-8) g/g, with an average increase in accuracy of 10.56%.
英文关键词	atmospheric science channel selection CO profile retrieval ultra-spectral thermal infrared data sensitivity weighting function characteristics
类型	Article
语种	中文
收录类别	SCI-E
WOS记录号	WOS:000661123600016
WOS关键词	RESOLUTION
WOS类目	Optics
WOS研究方向	Optics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350924
作者单位	[Zhang Bei-Bei; Wang Ning; Yao Wei-Yuan; Qian Yong-Gang; Ma Ling-Ling; Li Chuan-Rong; Tang Ling-Li; Liu Yao-Kai; Gao Cai-Xia] Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Quantitat Remote Sensing Informat Technol, Beijing 100094, Peoples R China; [Zhang Bei-Bei] Univ Chinese Acad Sci, Sch Elect Elect & Commun Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang Bei-Bei,Wang Ning,Yao Wei-Yuan,et al. Channel selection for carbon monoxide retrievals based on ultra-spectral thermal infrared data[J],2021,40(3):391-399.
APA	Zhang Bei-Bei.,Wang Ning.,Yao Wei-Yuan.,Qian Yong-Gang.,Ma Ling-Ling.,...&Gao Cai-Xia.(2021).Channel selection for carbon monoxide retrievals based on ultra-spectral thermal infrared data.JOURNAL OF INFRARED AND MILLIMETER WAVES,40(3),391-399.
MLA	Zhang Bei-Bei,et al."Channel selection for carbon monoxide retrievals based on ultra-spectral thermal infrared data".JOURNAL OF INFRARED AND MILLIMETER WAVES 40.3(2021):391-399.