Be7 concentration in sea-level air and in atmospheric fallout

Shvedov, V.P.; Gritchenko, Z.G.; Gedeonov, L.I.

doi:10.1007/bf01476008

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Measurements of Be-7 in surface air have been reported by Shvedov (Shvedov et al, 1962) a t Leningrad (60" N), by Parker (Parker, 1962) a t Sutton, U.K., (53" N), by Peirson (Peirson, 1963) a t Chilton, U.K. (53" N), by Schumann (Schumann & Stoeppler, 1963) at Heidelberg (49" N) and by Gustafson (Gustafson et al, 1961) a t Argonne, U.S. (42" N). Most of these meas-urements, carried out in the middle latitudes during the moratorium of 1959-62 do show a "spring increase" somewhat similar to that observed for fission products although the amplitude of the increase varies from station to station.…”

Section: Resultsmentioning

confidence: 93%

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

Rangarajan

Gopalakrishnan

1970

Tellus A: Dynamic Meteorology and Oceanography

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A comparative study of the seasonal variations of cosmic-ray produced Be-7 and fission product Cs-137 has been carried out in the surface air at Bombay and other stations in India. The resulta show that both isotopes attain peak values during the spring months of March-April. However it is obaerved that the amplitude of increaae is much lees in the caae of Be-7 compared to stratospheric Cs-137. This difference is explained aa being due to only a part of Be-7 in surface air being of stratospheric origin. By comparison with Cs-137, it is estimatad that the stratospheric component of Be-7 is about 00 % in spring decreasing to 25 % in the autumn.

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Section: Resultsmentioning

confidence: 93%

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

Rangarajan

Gopalakrishnan

1970

Tellus A: Dynamic Meteorology and Oceanography

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Mean residence time of⁷Be-bearing aerosols in the troposphere

Shapiro¹,

Forbes-Resha²

1976

J. Geophys. Res.

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Measurements of 7Be specific activities in ground level air have been carried out at Fullerton, California, for a 23‐month period from September 1973 through July 1975. The mean specific activity observed at this relatively dry location (less than 37 cm of annual total precipitation) was 0.216 pCi/m3. From this result a mean tropospheric residence time for 7Be‐bearing aerosols of 35.4 days is obtained. This result is in very good agreement with residence times obtained from earlier measurements of 7Be and 7Be/32P ratios in rainwater.

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Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

Rangarajan¹,

Gopalakrishnan²

1970

Tellus

View full text Add to dashboard Cite

A comparative study of the seasonal variations of cosmic‐ray produced Be‐7 and fission product Cs‐137 has been carried out in the surface air at Bombay and other stations in India. The results show that both isotopes attain peak values during the spring months of March‐April. However it is observed that the amplitude of increase is much less in the case of Be‐7 compared to stratospheric Cs‐137. This difference is explained as being due to only a part of Be‐7 in surface air being of stratospheric origin. By comparison with Cs‐137, it is estimated that the stratospheric component of Be‐7 is about 60% in spring decreasing to 25% in the autumn.

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Be7 concentration in sea-level air and in atmospheric fallout

Cited by 3 publications

References 4 publications

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

Mean residence time of⁷Be-bearing aerosols in the troposphere

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

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Be7 concentration in sea-level air and in atmospheric fallout

Cited by 3 publications

References 4 publications

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

Mean residence time of7Be-bearing aerosols in the troposphere

Seasonal variation of Beryllium-7 relative to Caesium-137 in surface air at tropical and sub-tropical latitudes

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Mean residence time of⁷Be-bearing aerosols in the troposphere