Using rainfall radar data to improve interpolated maps of dose rate in the Netherlands

Hiemstra, Paul H.; Pebesma, Edzer; Heuvelink, G.B.M.; Twenhöfel, C.

doi:10.1016/j.scitotenv.2010.08.051

Cited by 10 publications

(9 citation statements)

References 24 publications

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“…Positive SES values indicate that the observed values result higher than the simulated ones, which indicates a phylogenetic and/or traits divergence within communities (De Bello et al, 2009;De Bello et al, 2012). The maps were produced using automatic kriging models (Hiemstra et al, 2010) through R (package automap) (R Development Core Team, 2014). We used interpolation only to produce maps, i.e.…”

Section: Taxonomic Functional and Phylogenetic Tree Diversitymentioning

confidence: 99%

Beyond taxonomic diversity: Revealing spatial mismatches in phylogenetic and functional diversity facets in Mediterranean tree communities in southern France

Doxa

Devictor

Baumel

et al. 2020

Forest Ecology and Management

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Adopting a multifaceted approach of biodiversity is believed to capture different aspects of the ecosystem functioning and it is thus advised for conservation prioritisation, especially for anthropogenic ecosystems but this key topic has never been conducted for the Mediterranean tree assemblages, despite their ecological importance. We explored how the multi-faceted diversity of woody plant assemblages, as measured by taxonomic (TD), functional (FD) and phylogenetic (PD) diversities, are distributed over space in the French part of the Mediterranean biome, and to which extend they are spatially correlated to each other, in order to understand whether one facet can be used as a proxy for another, especially for conservation management purposes.We analysed data from 5885 plots over the study area. We estimated several FD types by considering separately (i) regeneration, (ii) morphology traits (iii) modalities on species ecological properties, and finally (iv) considering all traits together. We used the Rao quadratic entropy to estimate the TD, FD and PD diversity facets. We tested for the links and spatial correlation (congruence) levels among these facets, using simultaneous autoregressive (SAR) models and partial Mantel tests.Spatial structure varied among diversity facets and spatial autocorrelation patterns were identified for all diversity indices from 30 to 50 km distances. We observed a functional convergence and a phylogenetic divergence within tree assemblages comparing to the ones expected given the regional species pool, indicating that even in tree communities with functional similarities, phylogenetic diversity may be high. PD was zero to slightly congruent to FD, regardless the type of functional traits considered. The highest SAR slope (=0.3) and partial Mantel test (=0.2) were revealed between the PD and the FD based on species morphological traits, but still remained considerably low.Each one of the diversity indicators reflected a different tree community spatial pattern. Functional diversity patterns varied according to the type of traits considered. Using only taxonomic indices may be misleading for responding to Mediterranean tree assemblages conservation needs and additional information about the species phylogeny and functional responses to disturbance pressures should be considered in large scale analyses.

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Section: Taxonomic Functional and Phylogenetic Tree Diversitymentioning

confidence: 99%

Beyond taxonomic diversity: Revealing spatial mismatches in phylogenetic and functional diversity facets in Mediterranean tree communities in southern France

Doxa

Devictor

Baumel

et al. 2020

Forest Ecology and Management

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“…Spatial interpolation techniques are thus essential for creating a continuous (or prediction) surface from sampled point values. In the past, a variety of interpolation techniques were studied for mapping climatic variables (Price et al, 2000;Vicente-Serrano et al, 2003;Hijmans et al, 2005;Hong et al, 2005;Attorre et al, 2007;Hiemstra et al, 2010;Eldrandaly and Abu-Zaid, 2011;Candiani et al, 2013). For example, Agnew and Palutikof (2000) developed a geographical information system (GIS)-based method for constructing the high-resolution maps of mean seasonal temperature and precipitation in the Mediterranean Basin.…”

Section: Introductionmentioning

confidence: 99%

Comparison of interpolation methods for estimating spatial distribution of precipitation in Ontario, Canada

Wang

Huang

Lin

et al. 2014

Intl Journal of Climatology

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ABSTRACT:In this study, different interpolation techniques in a geographical information system (GIS) environment are analysed and compared for estimating the spatial distribution of precipitation in the province of Ontario, Canada. A high-resolution regional climate modelling system [Providing Regional Climates for Impacts Studies (PRECIS)] is used to simulate the present and future (2071-2100) precipitation events for 12 meteorological stations over Ontario. The results verify that for the present case PRECIS simulates well the precipitation events when compared with observed data. The future precipitation events can be projected after the validation of PRECIS. Six interpolation methods are then used to generate spatial distribution of precipitation based on the projections of future precipitation of 12 meteorological stations; they include inverse distance weighting (IDW), global polynomial interpolation (GPI), local polynomial interpolation (LPI), radial basis functions (RBF), ordinary kriging (OK), and universal kriging (UK). Cross-validation is applied to evaluate the accuracy of interpolation methods in terms of the root mean square error (RMSE). The results indicate that LPI is the optimal method with the least RMSE for interpolating the PRECIS precipitation. LPI is then used to analyse spatial variations of the average annual precipitation for the period of 2071-2100 over Ontario.

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“…the investigated region [1,2,3,4,5]. It has also been repeatedly found that periods of precipitation are accompanied by anomalous increases (bursts) of γ-radiation background [6,7,8,9,10,11,12,13,14,15,16]. This phenomenon is explained by the processes of washing out of short-lived β -and γ-emitting decay products of radon and thoron from the atmosphere onto various surfaces (soil, various coatings) and known as "radon washout" [3].…”

Section: Introductionmentioning

confidence: 89%

“…units; Q is the amount of precipitation in one event, m; I is the average intensity of precipitation, m/s; t end is the duration of precipitation, s; A a Pb−214 (z) and A a Bi−214 (z) are the functions of the volumetric activity distribution of 214 Pb and 214 Bi with height z in the atmosphere, Bq/m 3 ; A ah Pb−214 and A ah Bi−214 are the integral values of the volumetric activities of 214 Pb and 214 Bi in the atmospheric column with a base of 1 m 2 and a height of h, Bq/m 2 . When a radioactive equilibrium is reached in the atmosphere between radon and its short-lived decay products, and at h → ∞, A ah Pb−214 and A ah Bi−214 can be determined by the value of the radon flux density from the soil surface q Rn , Bq • m −2 • s −1 , from a simple relation A ah Pb−214 = A ah Bi−214 = q Rn /λ Rn (8) where λ Rn is the radioactive decay constant of radon 222 Rn, s −1 . The values of A ah Pb−214 and A ah Bi−214 can also be calculated knowing the distribution functions of 214 Pb and 214 Bi with height, for example, from the equations for the transfer of radon isotopes and their decay daughter products in the surface atmosphere.…”

Section: The Model For Determining the Intensity Of Rain Shower From The γ-Background Of The Surface Atmospherementioning

confidence: 99%

Связь Мощности Дозы Гамма-Излучения С Интенсивностью Ливневых Осадков

Zelinskiy¹,

Yakovlev²,

Fil’trov³

2021

Вестник КРАУНЦ. Физико-Математические Науки

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Experimental and theoretical studies of the influence of the intensity, amount and duration of liquid atmospheric precipitation on the formation of γ-background in the surface layer of the atmosphere are presented. It was observed that precipitation causes an increase in the γ-radiation dose rate in the form of bursts. In this case, the total amount of precipitation in an event determines the magnitude of the burst of the dose rate, and the intensity of precipitation determines the rate of increase in the dose rate of γ-radiation. A mathematical model, which establishes a quantitative relationship between the dose rate of γ-radiation and the intensity (amount) of liquid atmospheric precipitation has been developed and verified (R2 = 0.93). Представлены экспериментальные и теоретические исследования влияния интенсивности, количества и продолжительности жидких атмосферных осадков на формирование γ-фона в приземном слое атмосферы. Было замечено, что осадки вызывают увеличение мощности дозы γ-излучения в виде всплесков. В этом случае общее количество осадков в событии определяет величину всплеска мощности дозы, а интенсивность осадков определяет скорость увеличения мощности дозы γ-излучения. Разработана и проверена математическая модель, устанавливающая количественную связь между мощностью дозы γ-излучения и интенсивностью (количеством) жидких атмосферных осадков (R2 = 0,93).

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Using rainfall radar data to improve interpolated maps of dose rate in the Netherlands

Cited by 10 publications

References 24 publications

Beyond taxonomic diversity: Revealing spatial mismatches in phylogenetic and functional diversity facets in Mediterranean tree communities in southern France

Beyond taxonomic diversity: Revealing spatial mismatches in phylogenetic and functional diversity facets in Mediterranean tree communities in southern France

Comparison of interpolation methods for estimating spatial distribution of precipitation in Ontario, Canada

Связь Мощности Дозы Гамма-Излучения С Интенсивностью Ливневых Осадков

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