Results of Optical Precipitation Gage Field Tests

Kalchikhin, V. V.; Kobzev, A. A.; Korolkov, V. A.; Tikhomirov, A. A.

doi:10.1134/s102485601805007x

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…Incoming signals are proportional to the volume of droplets/hail stones. The RAINCAP sensor is able to measure the total precipitation amount with output resolution 0.01 mm and field accuracy for daily accumulation 5%; rain intensity (running one minute on average in 10-s steps and measuring range 0-2000 mm/h); rain duration with output resolution 10 s. The optical rain gauge OPTIOS, was designed in the IMCES [43,44] as a precipitation measurement unit for the automatic weather station AMK-03, and its modifications [42]. The functional scheme of this device is shown in Figure 2.…”

Section: Methodsmentioning

confidence: 99%

Connected Variations of Meteorological and Electrical Quantities of Surface Atmosphere under the Influence of Heavy Rain

et al. 2020

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The electrical state of the surface atmosphere changes significantly under the influence of cloudiness and atmospheric phenomena, including atmospheric precipitation. These features can be used for possible diagnostics of precipitation and improvement of their characteristics based on variations of atmospheric-electrical quantities in the surface layer. Studies of variations of meteorological and atmospheric-electrical quantities in the surface layer were carried out during the heavy rainfall associated with the cumulonimbus (Cb) clouds passage. Meteorological and atmospheric-electrical observations in the Geophysical Observatory of the Institute of Monitoring of Climatic and Ecological Systems are presented in this paper. Precipitation data are used to identify periods of heavy rainfall ≥ 5 mm/h. Information of weather stations and satellites is used to separate the heavy rainfall events by synoptic conditions like thunderstorms and showers of frontal or internal air masses. We find that rains associated with the frontal Cb clouds produce more abrupt changes in negative electrical conductivity in comparison with the Cb clouds in internal air masses. The significant increase in negative electrical conductivity (more than two times vs. normal values) occurs typically during the passage of frontal Cb and heavy rain with droplet size greater than 4 mm.

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Section: Methodsmentioning

confidence: 99%

Connected Variations of Meteorological and Electrical Quantities of Surface Atmosphere under the Influence of Heavy Rain

et al. 2020

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“…Our approach greatly simplifies the modeling of the activity deposited on the ground by narrowing the set of input parameters to quantities that can be easily measured, such as radon flux density, precipitation intensity and the height of the cloud lower edge. Precipitation intensity is measured with OPTIOS optical precipitation gauge with a high resolution of 1 s [20] and DAVIS Rain collector II shuttle gauge. Data for the lower edge of the clouds are readily available on the Internet (https://rp5.ru, accessed on 1 July 2021).…”

Section: Mathematical Modelmentioning

confidence: 99%

Model for Reconstruction of γ-Background during Liquid Atmospheric Precipitation

et al. 2021

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With regard to reconstructing the gamma background dose rate, existing models are either empirical with limited applicability or have many unknown input parameters, which complicates their application in practice. Due to this, there is a need to search for a new approach and build a convenient, easily applicable and universal model. The paper proposes a mathematical model for reconstructing the temporal evolution of the ambient equivalent γ-radiation dose rate during rain episodes, depending on the density of radon flux from the soil surface, as well as the duration and intensity of rain. The efficiency of the model is confirmed by the high coefficient of determination (R2 = 0.81–0.99) between the measured and reconstructed ambient equivalent dose rate during periods of rain, the simulation of which was performed using Wolfram Mathematica. An algorithm was developed for restoring the dynamics of the ambient equivalent γ-radiation dose rate during rainfall. Based on the results obtained, assumptions were made where the washout of radionuclides originates. The influence of the radionuclides ratio on the increase in the total γ-radiation dose rate was investigated.

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“…BDKG-03 detectors were installed at the experimental sites of geophysical observatory of Institute of Monitoring of Climatic and Ecological Systems of Siberian Branch of the Russian Academy of Science on a meteorological mast at heights of 1 m, 5 m and 10 m, and also on the roof of the ISSN 2079-6641 building at a height of 21 m. In this work, we will consider only the data of a γ-radiation detector installed at a height of 1 m from the earth's surface. Precipitation intensity data with a high temporal resolution were recorded by the Davis Rain Collector II shuttle rain gauge (Davis Instruments, USA), the WXT520 meteorological station (Vaisala, Finland), and the OPTIOS optical (laser) rain gauge [22]. The volumetric activity of radon isotopes and daughter products of their decay in the atmosphere was monitored by an EQF 3200 radiometer (SARAD, Germany) installed at a distance of about 10 m from the meteorological mast at a height of 1 m from the earth's surface.…”

Section: Experiments Equipmentmentioning

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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Results of Optical Precipitation Gage Field Tests

Cited by 9 publications

References 3 publications

Connected Variations of Meteorological and Electrical Quantities of Surface Atmosphere under the Influence of Heavy Rain

Connected Variations of Meteorological and Electrical Quantities of Surface Atmosphere under the Influence of Heavy Rain

Model for Reconstruction of γ-Background during Liquid Atmospheric Precipitation

Связь Мощности Дозы Гамма-Излучения С Интенсивностью Ливневых Осадков

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