气候变化领域集成服务门户(CCPortal): Long-term memory and multifractality of downwelling longwave radiation flux at the Earth’s surface

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DOI	10.1007/s00382-018-4473-z
	Long-term memory and multifractality of downwelling longwave radiation flux at the Earth’s surface
	Stathopoulos V.K.; Matsoukas C.
发表日期	2019
ISSN	0930-7575
起始页码	5723
结束页码	5738
卷号	52 期号:2020-09-10
英文摘要	We study for the first time the correlation properties and the multifractality of downward longwave radiation (DLR) temporal fluctuations, using the multi-fractal detrended fluctuation analysis. Our DLR data are taken from 40 stations of the Baseline Surface Radiation Network and span more than 20 years on temporal resolutions of a few minutes. In almost all stations, two different scaling regions are defined through the emergence of a crossover at around 10 days, similarly to earlier studies of other meteorological quantities. The crossover marks the transition from a persistent, non-stationary signal on weather scales to a more weakly persistent (and sometimes anti-persistent) behavior extending in the macroweather region between 2 months and at least several years. We observe typical multifractal behavior for DLR through the investigation of the generalized Hurst exponents and singularity spectra. Generally, the multifractality strength is larger for the weather regime compared to the macroweather. We find evidence that the shape of the probability density function of the DLR anomalies contributes to the multifractality strength for macroweather. The three Western Equatorial Pacific stations exhibit markedly different characteristics, with fluctuation functions closely following 1/f noise between the scales of a few hours up to 2 months. These stations appear to be strongly affected by the ENSO. Also, their timeseries are barely long enough so that the ENSO shows as a semi-periodic signal on the large scales of their long-term memory. Their multifractality is not clearly defined and its strength is much smaller than that of the other stations. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Detrended fluctuation analysis; Long-term memory; Longwave flux; Multifractality
语种	英语
scopus关键词	downwelling; El Nino-Southern Oscillation; longwave radiation
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146338
作者单位	Department of Environment, University of the Aegean, Xenia Building, Mytilene, 81100, Greece
推荐引用方式 GB/T 7714	Stathopoulos V.K.,Matsoukas C.. Long-term memory and multifractality of downwelling longwave radiation flux at the Earth’s surface[J],2019,52(2020-09-10).
APA	Stathopoulos V.K.,&Matsoukas C..(2019).Long-term memory and multifractality of downwelling longwave radiation flux at the Earth’s surface.Climate Dynamics,52(2020-09-10).
MLA	Stathopoulos V.K.,et al."Long-term memory and multifractality of downwelling longwave radiation flux at the Earth’s surface".Climate Dynamics 52.2020-09-10(2019).