Review: Fractal Geometry in Precipitation

Rainfall, or more generally the precipitation process (flux), is a clear example of chaotic variables resulting from a highly nonlinear dynamical system, the atmosphere, which is represented by a set of physical equations such as the Navier–Stokes equations, energy balances, and the hydrological cyc...

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Main Authors: Robert Monjo, Oliver Meseguer-Ruiz
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Atmosphere
Subjects:
Online Access:https://www.mdpi.com/2073-4433/15/1/135
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author Robert Monjo
Oliver Meseguer-Ruiz
author_facet Robert Monjo
Oliver Meseguer-Ruiz
author_sort Robert Monjo
collection DOAJ
description Rainfall, or more generally the precipitation process (flux), is a clear example of chaotic variables resulting from a highly nonlinear dynamical system, the atmosphere, which is represented by a set of physical equations such as the Navier–Stokes equations, energy balances, and the hydrological cycle, among others. As a generalization of the Euclidean (ordinary) measurements, chaotic solutions of these equations are characterized by fractal indices, that is, non-integer values that represent the complexity of variables like the rainfall. However, observed precipitation is measured as an aggregate variable over time; thus, a physical analysis of observed fluxes is very limited. Consequently, this review aims to go through the different approaches used to identify and analyze the complexity of observed precipitation, taking advantage of its geometry footprint. To address the review, it ranges from classical perspectives of fractal-based techniques to new perspectives at temporal and spatial scales as well as for the classification of climatic features, including the monofractal dimension, multifractal approaches, Hurst exponent, Shannon entropy, and time-scaling in intensity–duration–frequency curves.
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spelling doaj.art-7e358177d8464e8e961a5a07096735ab2024-01-26T15:02:39ZengMDPI AGAtmosphere2073-44332024-01-0115113510.3390/atmos15010135Review: Fractal Geometry in PrecipitationRobert Monjo0Oliver Meseguer-Ruiz1Department of Algebra, Geometry and Topology, Complutense University of Madrid, 28040 Madrid, SpainMillennium Nucleus in Andean Peatlands (AndesPeat), Arica 1010069, ChileRainfall, or more generally the precipitation process (flux), is a clear example of chaotic variables resulting from a highly nonlinear dynamical system, the atmosphere, which is represented by a set of physical equations such as the Navier–Stokes equations, energy balances, and the hydrological cycle, among others. As a generalization of the Euclidean (ordinary) measurements, chaotic solutions of these equations are characterized by fractal indices, that is, non-integer values that represent the complexity of variables like the rainfall. However, observed precipitation is measured as an aggregate variable over time; thus, a physical analysis of observed fluxes is very limited. Consequently, this review aims to go through the different approaches used to identify and analyze the complexity of observed precipitation, taking advantage of its geometry footprint. To address the review, it ranges from classical perspectives of fractal-based techniques to new perspectives at temporal and spatial scales as well as for the classification of climatic features, including the monofractal dimension, multifractal approaches, Hurst exponent, Shannon entropy, and time-scaling in intensity–duration–frequency curves.https://www.mdpi.com/2073-4433/15/1/135precipitationfractalmonofractaltime-scalingHurst exponent
spellingShingle Robert Monjo
Oliver Meseguer-Ruiz
Review: Fractal Geometry in Precipitation
Atmosphere
precipitation
fractal
monofractal
time-scaling
Hurst exponent
title Review: Fractal Geometry in Precipitation
title_full Review: Fractal Geometry in Precipitation
title_fullStr Review: Fractal Geometry in Precipitation
title_full_unstemmed Review: Fractal Geometry in Precipitation
title_short Review: Fractal Geometry in Precipitation
title_sort review fractal geometry in precipitation
topic precipitation
fractal
monofractal
time-scaling
Hurst exponent
url https://www.mdpi.com/2073-4433/15/1/135
work_keys_str_mv AT robertmonjo reviewfractalgeometryinprecipitation
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