气候变化领域集成服务门户(CCPortal): Optimal Configuration of a Far-Infrared Radiometer to Study the Arctic Winter Atmosphere

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DOI	10.1029/2019JD031773
	Optimal Configuration of a Far-Infrared Radiometer to Study the Arctic Winter Atmosphere
	Coursol L.; Libois Q.; Gauthier P.; Blanchet J.-P.
发表日期	2020
ISSN	2169897X
卷号	125 期号:14
英文摘要	Several far-infrared (FIR) satellite missions are planned for the next decade, with a special interest for the Arctic region. A theoretical study is performed to help with the design of an FIR radiometer, whose configuration in terms of channels number and frequencies is optimized based on information content analysis. The problem is cast in a context of vertical column experiments (1D) to determine the optimal configuration of a FIR radiometer to study the Arctic polar night. If only observations of the FIR radiometer were assimilated, the results show that for humidity, 90% of the total information content is obtained with four bands, whereas for temperature, 10 bands are needed. When the FIR measurements are assimilated on top of those from the advanced infrared sounder (AIRS), the former bring in additional information between the surface and 850 hPa and from 550 to 250 hPa for humidity. Moreover, between 400 and 200 hPa, the FIR radiometer is better than AIRS at reducing the analysis error variance for humidity. This indicates the potential of FIR observations for improving water vapor analysis in the Arctic. ©2020. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185890
作者单位	Université du Québec à Montréal (UQAM), Montréal, Canada; CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France
推荐引用方式 GB/T 7714	Coursol L.,Libois Q.,Gauthier P.,et al. Optimal Configuration of a Far-Infrared Radiometer to Study the Arctic Winter Atmosphere[J],2020,125(14).
APA	Coursol L.,Libois Q.,Gauthier P.,&Blanchet J.-P..(2020).Optimal Configuration of a Far-Infrared Radiometer to Study the Arctic Winter Atmosphere.Journal of Geophysical Research: Atmospheres,125(14).
MLA	Coursol L.,et al."Optimal Configuration of a Far-Infrared Radiometer to Study the Arctic Winter Atmosphere".Journal of Geophysical Research: Atmospheres 125.14(2020).