| 1. |
- Aldahan, A, et al.
(författare)
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Atmospheric interactions at northern high latitudes from weekly Be-isotopes in surface air
- 2001
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Ingår i: APPLIED RADIATION AND ISOTOPES. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0969-8043. ; 54:2, s. 345-353
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Tidskriftsartikel (refereegranskat)abstract
- We present weekly Be-7 (from 1972 to 1995), and weekly/seasonal Be-10 (for 1994) data in surface air from ground level stations in Sweden with a coverage of most of the northern high latitudes (56 degrees -68 degrees N). Our Be data are regionally represe
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| 2. |
- Buraglio, N, et al.
(författare)
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I-129 from the nuclear reprocessing facilities traced in precipitation and runoff in northern Europe
- 2001
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Ingår i: ENVIRONMENTAL SCIENCE & TECHNOLOGY. - : AMER CHEMICAL SOC. - 0013-936X. ; 35:8, s. 1579-1586
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Tidskriftsartikel (refereegranskat)abstract
- A huge amount of radioactive I-129 has been released into the environment from the nuclear energy industry, atomic weapon tests, and nuclear accidents. In this study, we present weekly and seasonal data on I-129 measured in precipitation and runoff of nor
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| 3. |
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| 4. |
- Kulan, A., Aldahan, A., Possnert, G., Vintersved, I
(författare)
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Solar cycle activity recorded in
- 2002
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Ingår i: IGBP-PAGES Swedish National Meeting, March 14-16.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Kulan, Abdulhadi, et al.
(författare)
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Distribution of 7Be in surface air of Europe
- 2006
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Ingår i: Atmospheric Environment. - : Elsevier BV. - 1352-2310 .- 1873-2844. ; 40:21, s. 3855-3868
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Tidskriftsartikel (refereegranskat)abstract
- This study deals with long-term (span over three decades, 1972-2003) distribution of the cosmogenic isotope Be-7 in surface air at 5 stations in Europe, extending from latitude 47 degrees N to 68 degrees N. The results suggest annual variability in all the data sets as well as a decrease in average Be-7 activity with increasing latitude. Furthermore, a 9-10-year cyclical pattern is observed in the Be-7 distribution, which is anticorrelated with the solar activity cycle. Our data also indicate a dynamic range of Be-7 activity for each solar cycle and phase (maximum or minimum) which is higher at the middle compared to high-latitude regions. Additionally, about 10-20% relative deviation is observed in Be-7 activity during solar maxima and minima compared to the total average Be-7. This feature indicates that some deviation in the worldwide Be-7 activity data may relate to their acquisition, with respect to which part of a solar cycle they have been collected in (time span) and at which latitudinal spread. Estimate of Be-7 flux onto European surface boundary layer vary from 0.4 to 0.9 x 10(10) atoms m(-2) yr(-1) which is strongly latitude dependent and our average value is comparable to the similar to 0.7-0.8 x 10(10) atoms m(-2) yr(-1) across ocean and land.
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| 6. |
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| 7. |
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