The effect of rain characteristics on scavenging rate of tritium-oxide from the atmosphere

Piskunov, V.N.; Golubev, Alexey; Balashov, Yu.S.; Mavrin, S. V.; Golubeva, V. N.; Aleinikov, A. Yu.; Коваленко, В. П.; Solomatin, I. I.

doi:10.1016/j.atmosenv.2012.08.068

Cited by 9 publications

(3 citation statements)

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“…19 By the combined effects of eddy diffusion and gravity deposition, tritium ice crystals gradually reach the 0°centigrade isotherm, 69 and then, wet deposition, the flushing action of precipitation, will significantly enhance the removal of tritium from the atmosphere. 70 During the transportation process of HTO in the troposphere, one of the key factors is the vertical transport distance of HTO, which is defined as the distance from the tropopause to the ground. Due to its single one-year periodicity, the heights of the troposphere were derived from the decadeaveraged historical observation data which are identified from Global Positioning System radio occultation (RO) bending angle profiles using the covariance transform method.…”

Section: ■ Discussionmentioning

confidence: 99%

“…After tritium crosses the tropopause, vertical and horizontal mixing is significantly enhanced . By the combined effects of eddy diffusion and gravity deposition, tritium ice crystals gradually reach the 0° centigrade isotherm, and then, wet deposition, the flushing action of precipitation, will significantly enhance the removal of tritium from the atmosphere …”

Section: Discussionmentioning

confidence: 99%

“…Another factor that influences deposition is the deposition rates, where wet deposition (precipitation) plays a much more significant role in atmospheric tritium removal compared to dry deposition. However, due to the limited data of key information (drop size, drop intensity, and rainfall duration), ,− the detailed mechanism of wet deposition, as well as its effect on the HTO vapor distribution, is left for future discussion.…”

Section: Discussionmentioning

confidence: 99%

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Seasonal and Spatial Distribution of Atmospheric Tritiated Water Vapor in Mainland China

Feng

Chen

Zhuo

et al. 2019

Environ. Sci. Technol.

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To reveal the distribution of atmospheric tritium water (HTO) vapor and provide a baseline for tritium pollution control, a subnational survey was conducted in mainland China. As the largest study on HTO vapor in China that has ever been formally reported, this study provides a macroimpression of the atmospheric HTO specific activity from March 2017 to March 2018. A total of 102 passive samplers were deployed at 34 sites in 30 provinces to determine the seasonal and spatial distributions of HTO vapor. In general, the HTO specific activity in the atmosphere ranged from lower than the minimum detectable activity (0.18 Bq·L–1) to 5.5 Bq·L–1. Spatially, the specific activity of HTO was positively correlated to the latitude and the distance to proximal coastline. Seasonally, significantly higher HTO specific activities were observed in spring and relatively lower in summer. Based on correlation analysis, the atmospheric HTO distributions were considered to be the consequence of combined factors of the stratospheric–tropospheric net mass flux, the distance from the tropopause to the ground, the fraction of air mass that originated from ocean re-evaporation and long-distance transport from high-latitude continents.

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Section: ■ Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%