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DOI	10.1016/j.atmosres.2021.105456
	Long-term persistence, invariant time scales and on-off intermittency of fog events
	Salcedo-Sanz S.; Piles M.; Cuadra L.; Casanova-Mateo C.; Caamaño A.J.; Cerro-Prada E.; Camps-Valls G.
发表日期	2021
ISSN	0169-8095
卷号	252
英文摘要	In this work we study different characteristics of fog long-term persistence, in events with different physical formation mechanisms. Specifically, we focus on the characterization of fog long-term persistence from observational data, by means of a Detrended Fluctuation Analysis (DFA) of its associated low-visibility time series. We analyze fog events with radiation and orographic underlying physical formation mechanisms, and identify a two-range pattern of long-term persistence. Our analysis leads to the emergence of a characteristic time, τ∗, at the crossover point between different scaling exponents in the DFA, independent of the time scale at which the fog event is studied. We also show that these scale-invariant characteristic times are related to the duration of fog/no-fog periods, what suggests that τ∗ is a good measure to study and compare fog events persistence, and also that fog events can be studied as on-off intermittent processes. We apply a binarizing process and confirm that the two-range shape structure in the DFA is maintained in the binary time series associated to fog events. We also show how τ∗ is related to the binary structure of the time series. © 2021 Elsevier B.V.
英文关键词	Characteristic time; Detrended fluctuation analysis; Fog events; On-off intermittency; Time scales
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/236874
作者单位	Department of Signal Processing and Communications, Universidad de Alcalá, Alcalá de Henares, Spain; Image Processing Laboratory, Universitat de València, València, Spain; Department of Civil Engineering: Construction, Infrastructure and Transport, Universidad Politécnica de Madrid, Madrid, Spain; Department Signal Processing and Communications, Universidad Rey Juan Carlos, Madrid, Spain
推荐引用方式 GB/T 7714	Salcedo-Sanz S.,Piles M.,Cuadra L.,et al. Long-term persistence, invariant time scales and on-off intermittency of fog events[J],2021,252.
APA	Salcedo-Sanz S..,Piles M..,Cuadra L..,Casanova-Mateo C..,Caamaño A.J..,...&Camps-Valls G..(2021).Long-term persistence, invariant time scales and on-off intermittency of fog events.Atmospheric Research,252.
MLA	Salcedo-Sanz S.,et al."Long-term persistence, invariant time scales and on-off intermittency of fog events".Atmospheric Research 252(2021).