The rainfall kinetic energy–intensity relationship for rainfall erosivity estimation in the mediterranean part of Slovenia

Petan, Sašo; Rusjan, Simon; Vidmar, Andrej; Mikoš, Matjaž

doi:10.1016/j.jhydrol.2010.07.031

Cited by 83 publications

(78 citation statements)

References 29 publications

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“…Therefore, the number of smaller rain drops has been classified in the smallest drop diameter class (0.312 mm). We have to emphasise that the DSD measurements in this study were taken using the OTT Parsivel optical disdrometer, as DSD evaluations can slightly differ from one instrument to another, e.g., OTT Parsivel, POSS, LPM300 and 2DVD, on which the interpretation of the data depends as well [21,27,28].…”

Section: Measurementsmentioning

confidence: 99%

Influence of Raindrop Size Distribution on Throughfall Dynamics under Pine and Birch Trees at the Rainfall Event Level

Zabret¹,

Rakovec²,

Mikoš³

2017

Atmosphere

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Abstract:Part of precipitation is intercepted by forest canopies, while the rest reaches the ground as throughfall or stemflow. This process is influenced by various meteorological variables, of which we have mainly focused on drop diameter and velocity. Rainfall in the open and throughfall under birch and pine trees have both been measured since 2014 in Ljubljana, Slovenia. The results demonstrate that the total throughfall during 3.5 years was 73% and 53% of rainfall under birch and pine trees, respectively. During the 236 analysed events, the median volume diameter was 1.8 mm (±1.7 mm), and kinetic energy between 0.01 mJ/cm 2 and 23.3 mJ/cm 2 was recorded. We closely analysed the effect of rainfall microstructure on throughfall under pine and birch trees during three specific rainfall events. The increase in drop diameter and fall velocity during a rainfall event instantaneously increased throughfall under pine trees between 25% and 47%, whereas no such changes were observed under birch trees. This may be the consequence of different tree properties of the two species. Additionally, in the case of a saturated canopy, throughfall under pine trees exceeded rainfall in the open after an onset of larger and faster drops.

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Section: Measurementsmentioning

confidence: 99%

Influence of Raindrop Size Distribution on Throughfall Dynamics under Pine and Birch Trees at the Rainfall Event Level

Zabret¹,

Rakovec²,

Mikoš³

2017

Atmosphere

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“…V slovenski prostor so metodo RUSLE med drugimi vpeljali ali jo razvijali za lokalne potrebe PetKovšeK (2002), Maček (2006), Zorn et al (2007), Petan et al (2008aPetan et al ( , 2008b, Petan (2010), Petan et al (2010), ŽaBota (2015.…”

Section: Metodologijaunclassified

Upgrade of the surface erosion model with the channel erosion areas – the Bohinj municipality case-study

Komac¹,

Pavlič²

2017

Geologija

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IzvlečekErozija predstavlja pomemben eksogeni proces, ki je prisoten na skoraj vsakem delu Zemljinega površja in tudi slovensko ozemlje ni izjema. Stopnja erozije je močno odvisna od dejavnikov, vezanih na lastnosti površine kot so tip rabe tal, tip vegetacijskega pokrova in geomorfologija ter od dejavnikov, vezanih na podnebje kot sta padavinski režim in nihanja temperature. Prispevek obsega modeliranje mehanske erozije in transport delcev po površju s pomočjo vode, cilj pa je bil združiti splošno uveljavljeno metodologijo RUSLE, ki učinkovito modelira ploskovno erozijo z metodo ocene stopnje podvrženosti eroziji v strugah. Združeni metodi uspešno modelirata erozijo v izrazito goratih in kraških območjih. Za testno območje je bilo izbrano območje občine Bohinj, kjer so zaradi geomorfološke razgibanosti terena prisotni številni naravni površinski procesi, idealno za razvoj združenega modela erozijski h območij. AbstractErosion is an important exogene process that can be found on almost all surfaces around the globe and Slovenian territory is no exception to the rule. The extent of the erosion is a result of various factors linked to the surface properties, such as land use type, vegetation type, and geomorphology and of the factors linked to the climate, such as the precipitation regime and the temperature oscilation. The paper focuses on the modelling of the mechanical erosion and the surface transport of particles due to surficial waters. The aim of the research was to combine the RUSLE surface erosion method with a model of gully erosion. The combined approach successfuly models the erosion in the mountainous and karst areas. Due to its vivid geomorphology that results in various natural surface proceses the area of Bohinj municipality was chosen as an ideal case study for testing the joint methodology. Uvod V znanostih, ki se ukvarjajo s procesi na Zemljinem površju, predstavlja erozija površin-ske procese, pri katerih pride s pomočjo delovanja vode ali vetra do mehanskega prenosa trdnih delcev kamnin ali tal, ali kemičnega prenosa raztopin z ene lokacije na drugo (Toy et al., 2002). Erozijski procesi se glede na vzrok in način transporta delcev delijo na ploskovno, rečno, obalno, kemično, ledeniško, poplavno in vetrno erozijo ter pobočne masne premike (Zachar, 1982;Toy et al., 2002). Prisotnost številnih strug na območju ocene stopnje erozivnosti, predstavlja za kvaliteno oceno le-te z modelom RUSLE precejšni izziv.

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“…Direct estimates of the particle size distribution (PSD) are required for a variety of hydrological studies, for instance, for precise water resources assessment (Lee and Zawadzki 2006;Ten Veldhuis et al 2014), soil erosion analyses (Winder and Paulson 2012;Salles et al 2002;Petan et al 2010;Lim et al 2015), and in remote sensing of precipitation from space (Bringi et al 2003;Gorgucci et al 2001;Thurai et al 2010;Liao et al 2014). The relationship between the reflectivity Z and rainfall rate R is the basis of rainfall estimation using single-polarization radar.…”

Section: Introductionmentioning

confidence: 99%

On the Optimal Measuring Area for Pointwise Rainfall Estimation: A Dedicated Experiment with 14 Laser Disdrometers

Tapiador

Navarro

Moreno

et al. 2017

Journal of Hydrometeorology

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Laser disdrometers measure the particle size distribution (PSD) of hydrometeors through a small cross-sectional (tens of square centimeters) surface. Such a limited area induces a sampling effect in the estimates of the PSD, which translates to error in the reflectivity-rain-rate (Z-R) relationship used for ground radar estimates of rainfall, estimates of kinetic energy of precipitation, and any other hydrometeorological application relying on particle size information. Here, the results of a dedicated experiment to estimate the extent of the effect of limited area sampling of rainfall are presented. Using 14 Parsivel, version 1 (Parsivel-1), disdrometers placed within 6 m 2 , it was found that the combined area of at least seven disdrometers is required for the estimates to start converging to a stable value. The results can be used to quantify the degree of over-/underestimation of precipitation parameters for a single instrument due to the limited collecting area effect. It has been found that a single disdrometer may underestimate instantaneous rain rate by 70%.

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The rainfall kinetic energy–intensity relationship for rainfall erosivity estimation in the mediterranean part of Slovenia

Cited by 83 publications

References 29 publications

Influence of Raindrop Size Distribution on Throughfall Dynamics under Pine and Birch Trees at the Rainfall Event Level

Influence of Raindrop Size Distribution on Throughfall Dynamics under Pine and Birch Trees at the Rainfall Event Level

Upgrade of the surface erosion model with the channel erosion areas – the Bohinj municipality case-study

On the Optimal Measuring Area for Pointwise Rainfall Estimation: A Dedicated Experiment with 14 Laser Disdrometers

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