气候变化领域集成服务门户(CCPortal): Numerical correction of atmospheric temperature profiles in clear and cloudy days

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DOI	10.1016/j.atmosres.2018.10.024
	Numerical correction of atmospheric temperature profiles in clear and cloudy days
	Zhao Y.; Zhou D.; Liu C.; Wu P.; Li L.; Zhang L.; Cheng W.
发表日期	2019
ISSN	0169-8095
起始页码	49
结束页码	56
卷号	217
英文摘要	A numerical correction algorithm (NCA) is proposed to improve the accuracy of atmospheric temperature profile in clear and cloudy days based on the weighting functions of different frequencies. The weighting functions of atmospheric brightness temperatures (BTs) with respect to temperature profiles are analyzed in detail. A performance assessment of the microwave radiometer (MWR) MP-3000A is operated with the observations from March to August 2018 in Harbin China (126.40∘E 45.46∘N). And a numerical method is used to calculate weighting functions with the downwelling monochromatic radiative transfer model (MonoRTM). According to the weighting functions, a cost function is defined in NCA to minimize the biases between the measured and calculated BTs by correcting the measured temperature profiles. A simulation is designed to examine the NCA based on the methodology and data. The experimental results show that the NCA can adjust the temperature profiles below 5 km. However, there is almost no improvement above 5 km because of the attenuation of radiation. And the statistic results show that the RMSE and MAE of temperature profiles corrected with NCA are reduced by 12.5% and 17.9% when compared with the uncorrected observations. Especially, both of the RMSE and MAE of the temperature profiles below 2 km are reduced by more than 50%. © 2018 Elsevier B.V.
英文关键词	Brightness temperature; Numerical correction; Temperature profile; Weighting function
语种	英语
scopus关键词	Atmospheric humidity; Atmospheric thermodynamics; Cost functions; Luminance; Microwave devices; Numerical methods; Radiative transfer; Temperature control; Atmospheric brightness; Atmospheric temperature profiles; Brightness temperatures; Measured temperatures; Performance assessment; Radiative transfer model; Temperature profiles; Weighting functions; Atmospheric temperature; air temperature; algorithm; atmospheric correction; mathematical analysis; temperature profile; weather; China; Harbin; Heilongjiang
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162340
作者单位	College of Automation, Harbin Engineering University, Harbin, 150001, China; Beijing Institute of Automatic Control Equipment, Beijing, 100074, China; Institute of Applied Meteorology, Beijing, 100029, China
推荐引用方式 GB/T 7714	Zhao Y.,Zhou D.,Liu C.,et al. Numerical correction of atmospheric temperature profiles in clear and cloudy days[J],2019,217.
APA	Zhao Y..,Zhou D..,Liu C..,Wu P..,Li L..,...&Cheng W..(2019).Numerical correction of atmospheric temperature profiles in clear and cloudy days.Atmospheric Research,217.
MLA	Zhao Y.,et al."Numerical correction of atmospheric temperature profiles in clear and cloudy days".Atmospheric Research 217(2019).