Total deposition velocities and scavenging ratios of 7Be and 210Pb at Rokkasho, Japan

Akata, Naofumi; Kawabata, Hitoshi; Hasegawa, H.; Sato, T.; Chikuchi, Yuki; Kondo, Kunio; Hisamatsu, Shun’ichi; Inaba, Jiro

doi:10.1007/s10967-007-7095-1

Cited by 38 publications

(15 citation statements)

References 25 publications

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“…The main reason for that is the enhancement in transport of air masses, enriched with 7 Be, from the top of the troposphere and stratosphere to the earth surface in spring season due to pressure gradient. High concentrations of 7 Be were observed in March, April and May, which agree with the above mentioned predictions (Likuku, 2006;Yamamoto et al, 2006;Akata et al, 2008).…”

Section: Resultssupporting

confidence: 90%

The effect of air mass origin on the ambient concentrations of 7Be and 210Pb in Islamabad, Pakistan

Ali

Khan

Akhter

et al. 2011

Journal of Environmental Radioactivity

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Section: Resultssupporting

confidence: 90%

The effect of air mass origin on the ambient concentrations of 7Be and 210Pb in Islamabad, Pakistan

Ali

Khan

Akhter

et al. 2011

Journal of Environmental Radioactivity

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“…Thus wet deposition dominates. The 7 Be concentration used here falls within the range of concentrations of 7 Be measured in a broad range of (mostly continental) environments 3.98 to 5.9 mBq m −3 [ Akata et al , 2008].…”

Section: Discussionmentioning

confidence: 99%

Deposition of⁷Be to Bermuda and the regional ocean: Environmental factors affecting estimates of atmospheric flux to the ocean

Kadko

Prospero

2011

J. Geophys. Res.

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The distribution of 7Be in ocean surface waters is used as tracer of upper ocean transport and atmospheric deposition processes. However, there is very little ocean deposition data available to characterize the temporal and spatial input of 7Be to the oceans and test model results. Here we measure the deposition of 7Be in bulk collectors at two sites at Bermuda over a span of nearly 2 years (April 2007 to January 2009) and compare these rates to the flux required to sustain the inventory of 7Be measured in the nearby Sargasso Sea. The Tudor Hill collector site undersampled (by ∼40%) both the rainfall compared to other Bermuda sites and the 7Be flux required for the ocean inventory. On the other hand, the 7Be flux captured at the Bermuda Institute of Ocean Sciences station site (0.048 dpm cm−2 d−1) matched that expected from the ocean observations. Previously measured long‐term atmospheric concentration of 7Be in surface air at Bermuda was used to estimate deposition velocities and scavenging ratios, and our estimates in this marine environment were found to be similar to those measured in continental regions. The deposition of 7Be to the oceans is overwhelmingly determined by wet processes; dry deposition to the ocean surface accounts for only a few percent, at most, of the total deposition to the ocean. We place these measurements in a longer‐term and large‐scale spatial context by using climatological rainfall data on Bermuda and ocean rainfall estimates from the Global Precipitation Climatology Program and Tropical Rainfall Measuring Mission.

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“…Several studies on 7 Be in the EAM zone have been reported (Lee et al, 2004;Momoshima et al, 2006;Hasegawa et al, 2007;Akata et al, 2008;Shi et al, 2011;Pan et al, 2011;Tan et al, 2013;Yang et al, 2013). However, little data are available on simultaneous measurement of 7 Be in atmospheric aerosols, rainfall, and soils at various latitudes in the EAM zone.…”

Section: Introductionmentioning

confidence: 99%

Latitudinal distributions of activities in atmospheric aerosols, deposition fluxes, and soil inventories of 7 Be in the East Asian monsoon zone

Gai

Pan

Yin

et al. 2015

Journal of Environmental Radioactivity

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Total deposition velocities and scavenging ratios of 7Be and 210Pb at Rokkasho, Japan

Cited by 38 publications

References 25 publications

The effect of air mass origin on the ambient concentrations of 7Be and 210Pb in Islamabad, Pakistan

The effect of air mass origin on the ambient concentrations of 7Be and 210Pb in Islamabad, Pakistan

Deposition of⁷Be to Bermuda and the regional ocean: Environmental factors affecting estimates of atmospheric flux to the ocean

Latitudinal distributions of activities in atmospheric aerosols, deposition fluxes, and soil inventories of 7 Be in the East Asian monsoon zone

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Total deposition velocities and scavenging ratios of 7Be and 210Pb at Rokkasho, Japan

Cited by 38 publications

References 25 publications

The effect of air mass origin on the ambient concentrations of 7Be and 210Pb in Islamabad, Pakistan

The effect of air mass origin on the ambient concentrations of 7Be and 210Pb in Islamabad, Pakistan

Deposition of7Be to Bermuda and the regional ocean: Environmental factors affecting estimates of atmospheric flux to the ocean

Latitudinal distributions of activities in atmospheric aerosols, deposition fluxes, and soil inventories of 7 Be in the East Asian monsoon zone

Contact Info

Product

Resources

About

Deposition of⁷Be to Bermuda and the regional ocean: Environmental factors affecting estimates of atmospheric flux to the ocean