Long-range atmospheric transport Beryllium-7 to region the Sea of Japan

Neroda, Andrey; Goncharova, Anna A.; Goryachev, V. A.; Мишуков, В. Ф.; Shlyk, N. V.

doi:10.1016/j.jenvrad.2016.04.030

Cited by 20 publications

(4 citation statements)

References 34 publications

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“…However, this study does not delve into the specifics behind these lower readings. Considering that rain or precipitation is the most influential factor in Be-7 deposition, as described in studies such as [24], [25], [26], [27], and [28], these findings do not align with the study by [3] which suggests that June experiences the least rainfall, and August sees the highest precipitation during SWM period. It may be due to the position of Cameron Highlands, which is not so affected by the SWM as mentioned in [27], where geographical attributes including latitude, longitude and altitude can give effect to radionuclide deposition rates.…”

Section: Seasonal Characteristics Of the Be-7contrasting

confidence: 59%

A study on surface air Beryllium-7 concentration at radionuclide station in Tanah Rata, Cameron Highlands (MYP42) during southwest monsoon seasons in Malaysia

Fauzi Haris,

Norwawi,

Hafez Mohd Isa

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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Beryllium-7 (Be-7) is a significant radionuclide, primarily produced through cosmic ray interactions with atmospheric elements. Its study can provide insights into atmospheric processes and transport mechanisms. This research investigates the concentration of Be-7 in surface air at the Radionuclide Station (MYP42) located in Tanah Rata, Cameron Highlands, Malaysia, during the Southwest Monsoon season using data from the Comprehensive Nuclear-Test-Ban Treaty Organisation (CTBTO) from 2011 to 2021. Meteorological parameters of the study area, such as wind direction, wind speed, humidity, and precipitation, are considered to understand their influence on radionuclide dispersion and deposition. The results from this study are aimed to contribute to the understanding of atmospheric dynamics in the Cameron Highlands region and may have implications for broader atmospheric and environmental studies. The study results suggest no statistically significant variation in Be-7 concentration during the southwest monsoon season, demonstrating minimal fluctuations within and outside the monsoon period. Such insights are crucial for the region’s scientific research and environmental management.

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Section: Seasonal Characteristics Of the Be-7contrasting

confidence: 59%

A study on surface air Beryllium-7 concentration at radionuclide station in Tanah Rata, Cameron Highlands (MYP42) during southwest monsoon seasons in Malaysia

Fauzi Haris,

Norwawi,

Hafez Mohd Isa

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The information provided concerning the dispersion of trajectories and their geographical distribution are the main advantages of this kind of representation, with the impossibility of comparing mean trajectories being the major drawback. In order to overcome this inconvenience, in their analysis into transport of 7 Be to Vladivostok, Russia, Neroda et al (2016) presented spaghetti plots for the isolated clusters accompanied by spaghetti plots of all the air mass trajectories together with the cluster means.…”

Section: Drawbacksmentioning

confidence: 99%

Boundaries of air mass trajectory clustering: key points and applications

Pérez

Sánchez

García

et al. 2016

Int. J. Environ. Sci. Technol.

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Calculating air mass trajectories is common in atmospheric analyses. However, if explainable results are to be achieved, several procedures are needed to process the vast amount of information handled. Clustering methods are statistical tools usually considered for such a purpose. Although they are based on rigorous algorithms, certain questions still remain when these methods are applied. The current review is organised in sections according to the sequence followed by such procedures. First, the types of clustering methods are described, with their core being the distance used. One key point is the stopping rule, which determines the final number of clusters. A simple classification based on this number is then suggested. Finally, the graphical presentation of the results is examined and the main drawbacks are commented on. A range of applications and results are considered to illustrate each section, and certain caveats and recommendations are also presented.

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“…These include weekly resolution aerosol 10 Be/ 7 Be records at Tibetan Plateau in China (Zheng et al., 2011), as well as our recent short‐term observational record on the Chinese Loess Plateau (Liu et al., 2022). In addition, although 7 Be is usually measured by relatively simple γ‐spectrometric counting, the 7 Be‐γ‐spectrometric counting measurement requires a large sample size (aerosols in the ∼10 3 –10 4 m 3 air) (Neroda et al., 2016; Padilla et al., 2019; Yamagata et al., 2019), which limits the acquisition of high‐resolution data under more practical sampling conditions to a certain extent. 7 Be‐AMS measurement can significantly reduce the sample size requirement and improve the detection limit by 10–100 times (Raisbeck & Yiou, 1988; Tiessen et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

Monitoring Surface ¹⁰Be/⁷Be Directly Reveals Stratospheric Air Intrusion in Sichuan Basin, China

Liu

et al. 2022

JGR Atmospheres

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Long-term monitoring of changes in the concentration of radionuclides in the atmosphere can provide valuable information for studying atmospheric dynamics (Yamagata et al., 2019;Zhang et al., 2021). Radionuclides 7 Be (T 1/2 = 53.29 d) and 10 Be (T 1/2 = 1.36 Ma) (Nishiizumi et al., 2007) are produced by the collision of high-energy cosmic ray flux with nitrogen atoms and oxygen atoms in the atmosphere. After generation, 7 Be and 10 Be are adsorbed on submicron aerosols, and their lifetimes are determined by the residence time of the aerosols (Lal et al., 1958). Since the sources of 7 Be and 10 Be are controlled only by cosmic rays, and mainly produced at the lower of the stratosphere and the top of the troposphere (Brown et al., 1989), the variation of 7 Be concentration in the near-surface air is generally observed to trace atmospheric mass transport processes (Bhandari et al., 1966). However, in addition to stratosphere-troposphere exchange variability, local effects (such as local

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Long-range atmospheric transport Beryllium-7 to region the Sea of Japan

Cited by 20 publications

References 34 publications

A study on surface air Beryllium-7 concentration at radionuclide station in Tanah Rata, Cameron Highlands (MYP42) during southwest monsoon seasons in Malaysia

A study on surface air Beryllium-7 concentration at radionuclide station in Tanah Rata, Cameron Highlands (MYP42) during southwest monsoon seasons in Malaysia

Boundaries of air mass trajectory clustering: key points and applications

Monitoring Surface ¹⁰Be/⁷Be Directly Reveals Stratospheric Air Intrusion in Sichuan Basin, China

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Long-range atmospheric transport Beryllium-7 to region the Sea of Japan

Cited by 20 publications

References 34 publications

A study on surface air Beryllium-7 concentration at radionuclide station in Tanah Rata, Cameron Highlands (MYP42) during southwest monsoon seasons in Malaysia

A study on surface air Beryllium-7 concentration at radionuclide station in Tanah Rata, Cameron Highlands (MYP42) during southwest monsoon seasons in Malaysia

Boundaries of air mass trajectory clustering: key points and applications

Monitoring Surface 10Be/7Be Directly Reveals Stratospheric Air Intrusion in Sichuan Basin, China

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Monitoring Surface ¹⁰Be/⁷Be Directly Reveals Stratospheric Air Intrusion in Sichuan Basin, China